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<!--Created on: 4/7/2026 2:18:48 PM-->
<!--Modified on: 4/7/2026 2:18:48 PM-->
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityShellCompany" xlink:to="dei_EntityShellCompany_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorName" xlink:to="dei_AuditorName_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:to="ifrs-full_InvestmentAccountedForUsingEquityMethod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investments accounted for using equity method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investments accounted for using the equity method</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentAssets" xlink:label="ifrs-full_OtherNoncurrentAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherNoncurrentAssets" xlink:to="ifrs-full_OtherNoncurrentAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherNoncurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherNoncurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherNoncurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssets" xlink:label="ifrs-full_NoncurrentAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ifrs-full_NoncurrentAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_NoncurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total non-current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssetsAbstract" xlink:label="ifrs-full_CurrentAssetsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentAssetsAbstract" xlink:to="ifrs-full_CurrentAssetsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current assets [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Inventories" xlink:label="ifrs-full_Inventories" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Inventories" xlink:to="ifrs-full_Inventories_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Inventories_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current inventories</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Inventories_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventories</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="ifrs-full_TradeAndOtherCurrentReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeAndOtherCurrentReceivables" xlink:to="ifrs-full_TradeAndOtherCurrentReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeAndOtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade and other current receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TradeAndOtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables and others</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxAssetsCurrent" xlink:label="ifrs-full_CurrentTaxAssetsCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentTaxAssetsCurrent" xlink:to="ifrs-full_CurrentTaxAssetsCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentTaxAssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax assets, current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentTaxAssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CurrentTaxAssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentAssets" xlink:label="ifrs-full_OtherCurrentAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherCurrentAssets" xlink:to="ifrs-full_OtherCurrentAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherCurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherCurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherCurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashAndCashEquivalents" xlink:to="ifrs-full_CashAndCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash and cash equivalents at the end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents at beginning of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssets" xlink:label="ifrs-full_CurrentAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentAssets" xlink:to="ifrs-full_CurrentAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Assets" xlink:to="ifrs-full_Assets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Assets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Assets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_Assets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAbstract" xlink:label="ifrs-full_EquityAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EquityAbstract" xlink:to="ifrs-full_EquityAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EquityAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EquityAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shareholders' equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapital" xlink:label="ifrs-full_IssuedCapital" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IssuedCapital" xlink:to="ifrs-full_IssuedCapital_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IssuedCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issued capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IssuedCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_IssuedCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital stock</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SharePremium" xlink:label="ifrs-full_SharePremium" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SharePremium" xlink:to="ifrs-full_SharePremium_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SharePremium_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SharePremium_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Premiums related to share capital</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RetainedEarningsExcludingProfitLossForReportingPeriodAndTreasuryShares" xlink:label="iva_RetainedEarningsExcludingProfitLossForReportingPeriodAndTreasuryShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RetainedEarningsExcludingProfitLossForReportingPeriodAndTreasuryShares" xlink:to="iva_RetainedEarningsExcludingProfitLossForReportingPeriodAndTreasuryShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RetainedEarningsExcludingProfitLossForReportingPeriodAndTreasuryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">A component of equity representing retained earnings excluding profit (loss) for the reporting period, and treasury shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RetainedEarningsExcludingProfitLossForReportingPeriodAndTreasuryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained earnings excluding profit (loss) for the reporting period and treasury shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RetainedEarningsExcludingProfitLossForReportingPeriodAndTreasuryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reserves</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslation" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslation" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ReserveOfExchangeDifferencesOnTranslation" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslation_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reserve of exchange differences on translation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Translation reserve</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:label="ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RetainedEarningsProfitLossForReportingPeriod" xlink:to="ifrs-full_RetainedEarningsProfitLossForReportingPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RetainedEarningsProfitLossForReportingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained earnings, profit (loss) for reporting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RetainedEarningsProfitLossForReportingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net loss for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_Equity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance at the end</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance at the beginning</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total Shareholders' equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shareholders' equity</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NonCurrentPortionOfNonCurrentBorrowingsAndNonCurrentLeaseLiabilities" xlink:label="iva_NonCurrentPortionOfNonCurrentBorrowingsAndNonCurrentLeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NonCurrentPortionOfNonCurrentBorrowingsAndNonCurrentLeaseLiabilities" xlink:to="iva_NonCurrentPortionOfNonCurrentBorrowingsAndNonCurrentLeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NonCurrentPortionOfNonCurrentBorrowingsAndNonCurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current portion of non-current borrowings and non-current lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NonCurrentPortionOfNonCurrentBorrowingsAndNonCurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current portion of non-current borrowings and non-current lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NonCurrentPortionOfNonCurrentBorrowingsAndNonCurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialLiabilities" xlink:label="ifrs-full_NoncurrentDerivativeFinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentDerivativeFinancialLiabilities" xlink:to="ifrs-full_NoncurrentDerivativeFinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentDerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current derivative financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentDerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term debt - derivatives</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NonCurrentPortionOfNonCurrentRoyaltyCertificatesIssued" xlink:label="iva_NonCurrentPortionOfNonCurrentRoyaltyCertificatesIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NonCurrentPortionOfNonCurrentRoyaltyCertificatesIssued" xlink:to="iva_NonCurrentPortionOfNonCurrentRoyaltyCertificatesIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NonCurrentPortionOfNonCurrentRoyaltyCertificatesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The non-current portion of non-current royalty certificates issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NonCurrentPortionOfNonCurrentRoyaltyCertificatesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current Portion of Non-current Royalty Certificates Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NonCurrentPortionOfNonCurrentRoyaltyCertificatesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty certificates liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentProvisionsForEmployeeBenefits" xlink:label="ifrs-full_NoncurrentProvisionsForEmployeeBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentProvisionsForEmployeeBenefits" xlink:to="ifrs-full_NoncurrentProvisionsForEmployeeBenefits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentProvisionsForEmployeeBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current provisions for employee benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentProvisionsForEmployeeBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentContractLiabilities" xlink:label="ifrs-full_NoncurrentContractLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentContractLiabilities" xlink:to="ifrs-full_NoncurrentContractLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current contract liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term contract liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NoncurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Longterm contract liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentLiabilities" xlink:label="ifrs-full_OtherNoncurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherNoncurrentLiabilities" xlink:to="ifrs-full_OtherNoncurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherNoncurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherNoncurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="ifrs-full_NoncurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentLiabilities" xlink:to="ifrs-full_NoncurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_NoncurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total non-current liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CurrentBorrowingsAndCurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xlink:label="iva_CurrentBorrowingsAndCurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CurrentBorrowingsAndCurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xlink:to="iva_CurrentBorrowingsAndCurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CurrentBorrowingsAndCurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current borrowings and current portion of non-current borrowings and current lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CurrentBorrowingsAndCurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current borrowings and current portion of non-current borrowings and current lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CurrentBorrowingsAndCurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities" xlink:label="ifrs-full_CurrentDerivativeFinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentDerivativeFinancialLiabilities" xlink:to="ifrs-full_CurrentDerivativeFinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentDerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current derivative financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentDerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term debt - derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_CurrentDerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivative liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherShorttermProvisions" xlink:label="ifrs-full_OtherShorttermProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherShorttermProvisions" xlink:to="ifrs-full_OtherShorttermProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherShorttermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_OtherShorttermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Closing balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_OtherShorttermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Beginning balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherShorttermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term provisions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:to="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current trade payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentContractLiabilities" xlink:label="ifrs-full_CurrentContractLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentContractLiabilities" xlink:to="ifrs-full_CurrentContractLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current contract liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term contract liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentLiabilities" xlink:label="ifrs-full_OtherCurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherCurrentLiabilities" xlink:to="ifrs-full_OtherCurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities" xlink:label="ifrs-full_CurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_CurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Liabilities" xlink:label="ifrs-full_Liabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Liabilities" xlink:to="ifrs-full_Liabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Liabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_Liabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAndLiabilities" xlink:label="ifrs-full_EquityAndLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EquityAndLiabilities" xlink:to="ifrs-full_EquityAndLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EquityAndLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity and liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EquityAndLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total equity and liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_EquityAndLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total liabilities and shareholders' equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeStatementAbstract" xlink:label="ifrs-full_IncomeStatementAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncomeStatementAbstract" xlink:to="ifrs-full_IncomeStatementAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncomeStatementAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Consolidated statement of income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromContractsWithCustomers" xlink:label="ifrs-full_RevenueFromContractsWithCustomers" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RevenueFromContractsWithCustomers" xlink:to="ifrs-full_RevenueFromContractsWithCustomers_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RevenueFromContractsWithCustomers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue from contracts with customers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RevenueFromContractsWithCustomers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_RevenueFromContractsWithCustomers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenues</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherIncomeFromOrdinaryActivities" xlink:label="iva_OtherIncomeFromOrdinaryActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherIncomeFromOrdinaryActivities" xlink:to="iva_OtherIncomeFromOrdinaryActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherIncomeFromOrdinaryActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of other income from ordinary activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherIncomeFromOrdinaryActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other income from ordinary activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherIncomeFromOrdinaryActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="iva_OtherIncomeFromOrdinaryActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueAndOperatingIncome" xlink:label="ifrs-full_RevenueAndOperatingIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RevenueAndOperatingIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue and other operating income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_RevenueAndOperatingIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total revenues and other income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ResearchAndDevelopmentExpense" xlink:label="ifrs-full_ResearchAndDevelopmentExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SalesAndMarketingExpense" xlink:label="ifrs-full_SalesAndMarketingExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SalesAndMarketingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sales and marketing expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_SalesAndMarketingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Marketing - Business development expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeneralAndAdministrativeExpense" xlink:label="ifrs-full_GeneralAndAdministrativeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General and administrative expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General and administrative expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherOperatingIncomeExpense" xlink:label="ifrs-full_OtherOperatingIncomeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherOperatingIncomeExpense" xlink:to="ifrs-full_OtherOperatingIncomeExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherOperatingIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating income (expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherOperatingIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating income (expenses)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherOperatingIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="ifrs-full_ProfitLossFromOperatingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProfitLossFromOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Profit (loss) from operating activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ProfitLossFromOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating profit (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ProfitLossFromOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net operating loss</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceIncome" xlink:label="ifrs-full_FinanceIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinanceIncome" xlink:to="ifrs-full_FinanceIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_FinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total financial income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceCosts" xlink:label="ifrs-full_FinanceCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinanceCosts" xlink:to="ifrs-full_FinanceCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ifrs-full_FinanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="ifrs-full_FinanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total financial expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceIncomeCost" xlink:label="ifrs-full_FinanceIncomeCost" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinanceIncomeCost" xlink:to="ifrs-full_FinanceIncomeCost_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinanceIncomeCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance income (cost)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinanceIncomeCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net financial income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_FinanceIncomeCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:label="ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:to="ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share of profit (loss) of associates accounted for using equity method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share of net profit (loss) - Equity method</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax expense (income)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Income tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Income (expense) tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actual income tax benefit</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProfitLoss" xlink:to="ifrs-full_ProfitLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Profit (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net loss for the period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net loss for the period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net loss for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BasicEarningsLossPerShare" xlink:label="ifrs-full_BasicEarningsLossPerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BasicEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basic earnings (loss) per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BasicEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basic loss per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DilutedEarningsLossPerShare" xlink:label="ifrs-full_DilutedEarningsLossPerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DilutedEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Diluted earnings (loss) per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DilutedEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Diluted loss per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageShares" xlink:label="ifrs-full_WeightedAverageShares" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average number of ordinary shares used in calculating basic earnings per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WeightedAverageShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average number of shares outstanding used to calculate basic loss per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustedWeightedAverageShares" xlink:label="ifrs-full_AdjustedWeightedAverageShares" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustedWeightedAverageShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average number of ordinary shares used in calculating diluted earnings per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdjustedWeightedAverageShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average number of shares outstanding used to calculate diluted loss per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfComprehensiveIncomeAbstract" xlink:label="ifrs-full_StatementOfComprehensiveIncomeAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_StatementOfComprehensiveIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Consolidated statement of comprehensive income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:to="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income that will be reclassified to profit or loss, net of tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Items that will be reclassified subsequently to profit or loss</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other comprehensive loss</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total comprehensive loss</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityAbstract" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="ifrs-full_StatementOfChangesInEquityTable" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="ifrs-full_ComponentsOfEquityAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Translation reserves</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RetainedEarningsExcludingProfitLossFromCurrentReportingPeriodAndTreasurySharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reserves (Accumulated losses)</label>
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings" xlink:label="ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings" xlink:to="ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through appropriation of retained earnings, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Appropriation of net income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssueOfEquity" xlink:label="ifrs-full_IssueOfEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IssueOfEquity" xlink:to="ifrs-full_IssueOfEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IssueOfEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IssueOfEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of ordinary shares</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInSharesThroughIssueOfOrdinaryShares" xlink:label="iva_IncreaseInSharesThroughIssueOfOrdinaryShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInSharesThroughIssueOfOrdinaryShares" xlink:to="iva_IncreaseInSharesThroughIssueOfOrdinaryShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInSharesThroughIssueOfOrdinaryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase in shares resulting from the issuance of shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInSharesThroughIssueOfOrdinaryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase In Shares Through Issue of Ordinary Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseInSharesThroughIssueOfOrdinaryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of ordinary shares (in shares)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareIssueRelatedCost" xlink:label="ifrs-full_ShareIssueRelatedCost" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShareIssueRelatedCost" xlink:to="ifrs-full_ShareIssueRelatedCost_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShareIssueRelatedCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share issue related cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ifrs-full_ShareIssueRelatedCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ShareIssueRelatedCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseThroughIssuanceOfWarrantsEquity" xlink:label="iva_IncreaseDecreaseThroughIssuanceOfWarrantsEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseThroughIssuanceOfWarrantsEquity" xlink:to="iva_IncreaseDecreaseThroughIssuanceOfWarrantsEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseThroughIssuanceOfWarrantsEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in equity resulting from the issuance of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseThroughIssuanceOfWarrantsEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease Through Issuance Of Warrants, Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseThroughIssuanceOfWarrantsEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of prefunded warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInSharesThroughExerciseAndVestingOfEquityInstruments" xlink:label="iva_IncreaseDecreaseInSharesThroughExerciseAndVestingOfEquityInstruments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInSharesThroughExerciseAndVestingOfEquityInstruments" xlink:to="iva_IncreaseDecreaseInSharesThroughExerciseAndVestingOfEquityInstruments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInSharesThroughExerciseAndVestingOfEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in shares resulting from the exercise and vesting of equity instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInSharesThroughExerciseAndVestingOfEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Shares Through Exercise And Vesting Of Equity Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInSharesThroughExerciseAndVestingOfEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Vesting of bonus shares (in shares)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity" xlink:label="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity" xlink:to="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through exercise of warrants, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Vesting of bonus shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:to="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through share-based payment transactions, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based payment compensation expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseThroughShareWarrantsSubscriptionPremium" xlink:label="iva_IncreaseDecreaseThroughShareWarrantsSubscriptionPremium" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseThroughShareWarrantsSubscriptionPremium" xlink:to="iva_IncreaseDecreaseThroughShareWarrantsSubscriptionPremium_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseThroughShareWarrantsSubscriptionPremium_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase decrease in reserves resulting from BSA share warrants subscription premium.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseThroughShareWarrantsSubscriptionPremium_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) Through Share Warrants Subscription Premium</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseThroughShareWarrantsSubscriptionPremium_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA share warrants subscription premium</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:to="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through treasury share transactions, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Treasury shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:label="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:to="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through other changes, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfCashFlowsAbstract" xlink:label="ifrs-full_StatementOfCashFlowsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_StatementOfCashFlowsAbstract" xlink:to="ifrs-full_StatementOfCashFlowsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Consolidated statement of cash flows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) operating activities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows used in operating activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:label="ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:to="ifrs-full_AdjustmentsForReconcileProfitLossAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustmentsForReconcileProfitLossAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments to reconcile profit (loss) [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdjustmentsForReconcileProfitLossAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Elimination of non-cash or non-operating income and expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdjustmentsForDepreciationAmortisationAndProvisions" xlink:label="iva_AdjustmentsForDepreciationAmortisationAndProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdjustmentsForDepreciationAmortisationAndProvisions" xlink:to="iva_AdjustmentsForDepreciationAmortisationAndProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdjustmentsForDepreciationAmortisationAndProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for depreciation, amortisation expense and provisions to reconcile profit (loss) to net cash flow from (used in) operating activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdjustmentsForDepreciationAmortisationAndProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for Depreciation, Amortisation and Provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AdjustmentsForDepreciationAmortisationAndProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation, amortization and provisions</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdjustmentsForGainsLossesOnDisposalOfTangibleAndIntangibleAssets" xlink:label="iva_AdjustmentsForGainsLossesOnDisposalOfTangibleAndIntangibleAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdjustmentsForGainsLossesOnDisposalOfTangibleAndIntangibleAssets" xlink:to="iva_AdjustmentsForGainsLossesOnDisposalOfTangibleAndIntangibleAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdjustmentsForGainsLossesOnDisposalOfTangibleAndIntangibleAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for gain (loss) on disposals of tangible and intangible assets to reconcile profit (loss) to net cash flow from (used in) operating activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdjustmentsForGainsLossesOnDisposalOfTangibleAndIntangibleAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments For Gains (Losses)On Disposal Of Tangible and Intangible Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_AdjustmentsForGainsLossesOnDisposalOfTangibleAndIntangibleAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net book value of tangible and intangible assets disposed</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:label="ifrs-full_AdjustmentsForIncomeTaxExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:to="ifrs-full_AdjustmentsForIncomeTaxExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustmentsForIncomeTaxExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for income tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdjustmentsForIncomeTaxExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred and current taxes</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdjustmentsForTaxCredits" xlink:label="iva_AdjustmentsForTaxCredits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdjustmentsForTaxCredits" xlink:to="iva_AdjustmentsForTaxCredits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdjustmentsForTaxCredits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for tax credit to reconcile profit (loss) to net cash flow from (used in) operating activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdjustmentsForTaxCredits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments For Tax Credits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AdjustmentsForTaxCredits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax credits</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdjustmentsForCostOfDebt" xlink:label="iva_AdjustmentsForCostOfDebt" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdjustmentsForCostOfDebt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for cost of debt.</label>
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForFairValueGainsLosses" xlink:label="ifrs-full_AdjustmentsForFairValueGainsLosses" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustmentsForFairValueGainsLosses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for fair value losses (gains)</label>
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherAdjustmentsForNoncashItems" xlink:label="ifrs-full_OtherAdjustmentsForNoncashItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherAdjustmentsForNoncashItems" xlink:to="ifrs-full_OtherAdjustmentsForNoncashItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherAdjustmentsForNoncashItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other adjustments for non-cash items</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherAdjustmentsForNoncashItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:label="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) operations before changes in working capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows used in operations before tax, interest and changes in working capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for decrease (increase) in trade and other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease / (increase) in operating and other receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:to="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for increase (decrease) in trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase / (decrease) in operating and other payables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for decrease (increase) in inventories</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease / (increase) in inventories</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:label="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:to="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Income taxes paid (refund), classified as operating activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax credit received</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities" xlink:to="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other inflows (outflows) of cash, classified as operating activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:label="ifrs-full_IncreaseDecreaseInWorkingCapital" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:to="ifrs-full_IncreaseDecreaseInWorkingCapital_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInWorkingCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in working capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="ifrs-full_IncreaseDecreaseInWorkingCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax, interest and changes in operating working capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) operating activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash used in operating activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash used in operating activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) investing activities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows provided by (used in) investing activities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="iva_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchase Of Property Plant And Equipment And Intangible Assets Classified As Investing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchase Of Property Plant And Equipment And Intangible Assets Classified As Investing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchases of property, plant and equipment and intangible assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ProceedsFromSalesOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="iva_ProceedsFromSalesOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ProceedsFromSalesOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The cash inflow from the disposal of property, plant and equipment and intangible assets, classified as investing activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ProceedsFromSalesOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds From Sales Of Property Plant And Equipment And Intangible Assets Classified As Investing Activities</label>
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInDecreaseIncreaseInShorttermDepositsAndInvestments" xlink:label="ifrs-full_CashFlowsFromUsedInDecreaseIncreaseInShorttermDepositsAndInvestments" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInDecreaseIncreaseInShorttermDepositsAndInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) decrease (increase) in short-term deposits and investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInDecreaseIncreaseInShorttermDepositsAndInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease / (Increase) in short-term deposit accounts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities" xlink:to="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other inflows (outflows) of cash, classified as investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase / (Decrease) in other non-current financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash generated by investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash flows provided by (used in) investing activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) financing activities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows provided by financing activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromIssuingShares" xlink:label="ifrs-full_ProceedsFromIssuingShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProceedsFromIssuingShares" xlink:to="ifrs-full_ProceedsFromIssuingShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from issuing shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital increase</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from issuance of shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsForShareIssueCosts" xlink:label="ifrs-full_PaymentsForShareIssueCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PaymentsForShareIssueCosts" xlink:to="ifrs-full_PaymentsForShareIssueCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PaymentsForShareIssueCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments for share issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ifrs-full_PaymentsForShareIssueCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs related to capital increase</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_PaymentsForShareIssueCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs related to capital increase</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsProceedsFromIssuanceOfWarrants" xlink:label="iva_IfrsProceedsFromIssuanceOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsProceedsFromIssuanceOfWarrants" xlink:to="iva_IfrsProceedsFromIssuanceOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsProceedsFromIssuanceOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsProceedsFromIssuanceOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Proceeds from Issuance of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsProceedsFromIssuanceOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of prefunded warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ProceedsFromIssuanceOfRoyaltyCertificates" xlink:label="iva_ProceedsFromIssuanceOfRoyaltyCertificates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ProceedsFromIssuanceOfRoyaltyCertificates" xlink:to="iva_ProceedsFromIssuanceOfRoyaltyCertificates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ProceedsFromIssuanceOfRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The cash inflow from the issuance of royalty certificates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ProceedsFromIssuanceOfRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from Issuance of Royalty Certificates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ProceedsFromIssuanceOfRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of royalty certificates</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:to="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from borrowings, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription of borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan obtained</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:label="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:to="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayments of borrowings, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment of debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayments of borrowings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:to="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments of lease liabilities, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment of lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:to="ifrs-full_InterestPaidClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest paid, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interests paid</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from (used in) financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash generated by financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash flows provided by financing activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in cash and cash equivalents before effect of exchange rate changes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net increase (decrease) in cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:to="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Effect of exchange rate changes on cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exchange gains / (losses)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsSaleOfStockAxis" xlink:label="iva_IfrsSaleOfStockAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsSaleOfStockAxis" xlink:to="iva_IfrsSaleOfStockAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsSaleOfStockAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Information by type of sale of the entity's stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsSaleOfStockAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Sale of Stock [Axis]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsSaleOfStockDomain" xlink:label="iva_IfrsSaleOfStockDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsSaleOfStockDomain" xlink:to="iva_IfrsSaleOfStockDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsSaleOfStockDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsSaleOfStockDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Sale of Stock [Domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AtMarketOfferingMember" xlink:label="iva_AtMarketOfferingMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AtMarketOfferingMember" xlink:to="iva_AtMarketOfferingMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AtMarketOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for at-the market offering (ATM).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AtMarketOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">At Market Offering [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AtMarketOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ATM</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInPrepaidExpenses" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInPrepaidExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdjustmentsForDecreaseIncreaseInPrepaidExpenses" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInPrepaidExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInPrepaidExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for decrease (increase) in prepaid expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInPrepaidExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Variation of prepaid expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CompanyInformationAbstract" xlink:label="iva_CompanyInformationAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CompanyInformationAbstract" xlink:to="iva_CompanyInformationAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CompanyInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CompanyInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Company information.</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CompanyInformationTextBlock" xlink:label="iva_CompanyInformationTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CompanyInformationTextBlock" xlink:to="iva_CompanyInformationTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CompanyInformationTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The entire disclosure on company information.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CompanyInformationTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Company Information [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CompanyInformationTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Company information</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StatementOfComplianceAbstract" xlink:label="iva_StatementOfComplianceAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StatementOfComplianceAbstract" xlink:to="iva_StatementOfComplianceAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StatementOfComplianceAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StatementOfComplianceAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basis of preparation and statement of compliance</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BasisOfPreparationAndStatementOfComplianceTextBlock" xlink:label="iva_BasisOfPreparationAndStatementOfComplianceTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BasisOfPreparationAndStatementOfComplianceTextBlock" xlink:to="iva_BasisOfPreparationAndStatementOfComplianceTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BasisOfPreparationAndStatementOfComplianceTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The entire disclosure for basis of preparation and statement of compliance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BasisOfPreparationAndStatementOfComplianceTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basis of preparation and statement of compliance [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BasisOfPreparationAndStatementOfComplianceTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basis of preparation and statement of compliance</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AccountingPrinciplesAbstract" xlink:label="iva_AccountingPrinciplesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AccountingPrinciplesAbstract" xlink:to="iva_AccountingPrinciplesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AccountingPrinciplesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AccountingPrinciplesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accounting principles</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:to="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of material accounting policy information [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accounting principles</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of intangible assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, plant and equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of property, plant and equipment [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, plant and equipment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfDeferredTaxAssetsAbstract" xlink:label="iva_DisclosureOfDeferredTaxAssetsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfDeferredTaxAssetsAbstract" xlink:to="iva_DisclosureOfDeferredTaxAssetsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfDeferredTaxAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of deferred tax assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfDeferredTaxAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax asset.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:label="ifrs-full_DisclosureOfDeferredTaxesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:to="ifrs-full_DisclosureOfDeferredTaxesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDeferredTaxesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of deferred taxes [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDeferredTaxesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax asset</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentsAccountedForUsingEquityMethodAbstract" xlink:label="ifrs-full_InvestmentsAccountedForUsingEquityMethodAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InvestmentsAccountedForUsingEquityMethodAbstract" xlink:to="ifrs-full_InvestmentsAccountedForUsingEquityMethodAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InvestmentsAccountedForUsingEquityMethodAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investments accounted for using the equity method</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:label="ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:to="ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of investments accounted for using equity method [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investments accounted for using the equity method</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousNoncurrentAssetsAbstract" xlink:label="ifrs-full_MiscellaneousNoncurrentAssetsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_MiscellaneousNoncurrentAssetsAbstract" xlink:to="ifrs-full_MiscellaneousNoncurrentAssetsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_MiscellaneousNoncurrentAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current assets.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:to="ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other non-current assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfInventoriesAbstract" xlink:label="ifrs-full_ClassesOfInventoriesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfInventoriesAbstract" xlink:to="ifrs-full_ClassesOfInventoriesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfInventoriesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventories</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInventoriesExplanatory" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfInventoriesExplanatory" xlink:to="ifrs-full_DisclosureOfInventoriesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of inventories [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventories</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivablesAbstract" xlink:label="ifrs-full_TradeAndOtherCurrentReceivablesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeAndOtherCurrentReceivablesAbstract" xlink:to="ifrs-full_TradeAndOtherCurrentReceivablesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeAndOtherCurrentReceivablesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables, tax receivables and other current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:to="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of trade and other receivables [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables, tax receivables and other current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalentsAbstract" xlink:label="ifrs-full_CashAndCashEquivalentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashAndCashEquivalentsAbstract" xlink:to="ifrs-full_CashAndCashEquivalentsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashAndCashEquivalentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents balance from the statement of cash flows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:label="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:to="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of cash and cash equivalents [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents balance from the statement of cash flows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalAbstract" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfClassesOfShareCapitalAbstract" xlink:to="ifrs-full_DisclosureOfClassesOfShareCapitalAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shareholders' equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:to="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of share capital, reserves and other equity interest [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shareholders' equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsAbstract" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsAbstract" xlink:to="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt, Derivatives and Royalty certificates liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:label="ifrs-full_DisclosureOfBorrowingsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:to="ifrs-full_DisclosureOfBorrowingsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfBorrowingsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of borrowings [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfBorrowingsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt, Derivatives and Royalty certificates liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherProvisionsAbstract" xlink:label="ifrs-full_DisclosureOfOtherProvisionsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherProvisionsAbstract" xlink:to="ifrs-full_DisclosureOfOtherProvisionsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherProvisionsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfProvisionsExplanatory" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfProvisionsExplanatory" xlink:to="ifrs-full_DisclosureOfProvisionsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of provisions [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansAbstract" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDefinedBenefitPlansAbstract" xlink:to="ifrs-full_DisclosureOfDefinedBenefitPlansAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:to="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of employee benefits [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherCurrentAndNonCurrentLiabilitiesAbstract" xlink:label="iva_OtherCurrentAndNonCurrentLiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherCurrentAndNonCurrentLiabilitiesAbstract" xlink:to="iva_OtherCurrentAndNonCurrentLiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherCurrentAndNonCurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherCurrentAndNonCurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current and non-current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:to="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other liabilities [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current and non-current liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TradePayablesAndOtherCurrentLiabilitiesAbstract" xlink:label="iva_TradePayablesAndOtherCurrentLiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TradePayablesAndOtherCurrentLiabilitiesAbstract" xlink:to="iva_TradePayablesAndOtherCurrentLiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TradePayablesAndOtherCurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TradePayablesAndOtherCurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables and short-term contract liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTextBlock" xlink:label="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTextBlock" xlink:to="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The entire disclosure for trade payables and other current liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Trade Payables and Other Current Liabilities [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables and short-term contract liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets and liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial instruments [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets and liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RevenueAndOtherIncomeAbstract" xlink:label="iva_RevenueAndOtherIncomeAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RevenueAndOtherIncomeAbstract" xlink:to="iva_RevenueAndOtherIncomeAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RevenueAndOtherIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RevenueAndOtherIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenues and other income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfRevenueExplanatory" xlink:label="ifrs-full_DisclosureOfRevenueExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfRevenueExplanatory" xlink:to="ifrs-full_DisclosureOfRevenueExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfRevenueExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of revenue [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfRevenueExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenues and other income</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsDisclosureOfOperatingExpensesAbstract" xlink:label="iva_IfrsDisclosureOfOperatingExpensesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsDisclosureOfOperatingExpensesAbstract" xlink:to="iva_IfrsDisclosureOfOperatingExpensesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsDisclosureOfOperatingExpensesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsDisclosureOfOperatingExpensesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" xlink:label="ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" xlink:to="ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of profit (loss) from operating activities [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherOperatingIncomeExpenseAbstract" xlink:label="iva_OtherOperatingIncomeExpenseAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherOperatingIncomeExpenseAbstract" xlink:to="iva_OtherOperatingIncomeExpenseAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherOperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherOperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating income and expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory" xlink:to="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other operating income (expense) [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating income and expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancialIncomeAndExpensesAbstract" xlink:label="iva_FinancialIncomeAndExpensesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancialIncomeAndExpensesAbstract" xlink:to="iva_FinancialIncomeAndExpensesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancialIncomeAndExpensesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The entire disclosure of financial income and expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancialIncomeAndExpensesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial income and expenses</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfCommitmentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commitments related to operational activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract" xlink:label="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial risk management</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial risk management [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial risk management</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract" xlink:label="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Events after the reporting date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for property, plant and equipment [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, plant, and equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for leases [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease contracts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based payments plans</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for borrowings [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loans and borrowings</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltyCertificatesLiabilitiesPolicyPolicyTextBlock" xlink:label="iva_RoyaltyCertificatesLiabilitiesPolicyPolicyTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltyCertificatesLiabilitiesPolicyPolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The description of the entity's accounting policy for Royalty Certificates liabilities.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RoyaltyCertificatesLiabilitiesPolicyPolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificates liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for income tax [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current and deferred tax</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for employee benefits [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for provisions [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other provisions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for recognition of revenue [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DescriptionOfAccountingPolicyForOtherIncomePolicyTextBlock" xlink:label="iva_DescriptionOfAccountingPolicyForOtherIncomePolicyTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DescriptionOfAccountingPolicyForOtherIncomePolicyTextBlock" xlink:to="iva_DescriptionOfAccountingPolicyForOtherIncomePolicyTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DescriptionOfAccountingPolicyForOtherIncomePolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The description of the entity's accounting policy for other income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DescriptionOfAccountingPolicyForOtherIncomePolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description Of Accounting Policy For Other Income [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DescriptionOfAccountingPolicyForOtherIncomePolicyTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for fair value measurement [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value measurement</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for foreign currency translation [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency transactions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of accounting policy for segment reporting [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Segment information</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:to="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of accounting judgements and estimates [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Use of estimates and judgment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:to="ifrs-full_DisclosureOfGoingConcernExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of going concern [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Going concern</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory" xlink:label="ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory" xlink:to="ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of interests in subsidiaries [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of subsidiaries</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory" xlink:label="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory" xlink:to="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of effect of changes in foreign exchange rates [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of exchange rates</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xlink:to="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of fair value of financial instruments [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of financial assets and liabilities measured at fair value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasExplanatory" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfGeographicalAreasExplanatory" xlink:to="ifrs-full_DisclosureOfGeographicalAreasExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of geographical areas [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Summary of entity's geographical split</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:to="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about intangible assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of intangible assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reconciliation of changes in property, plant and equipment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfDeferredTaxAssetsTableTextBlock" xlink:label="iva_DisclosureOfDeferredTaxAssetsTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfDeferredTaxAssetsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure of deferred tax assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfDeferredTaxAssetsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Deferred Tax Assets [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfDeferredTaxAssetsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of deferred tax assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory" xlink:label="ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory" xlink:to="ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of reconciliation of summarised financial information of associate accounted for using equity method to carrying amount of interest in associate [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of investment in Hepalys is accounted for using the equity method of accounting</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfOtherNoncurrentAssetsTableTextBlock" xlink:label="iva_DisclosureOfOtherNoncurrentAssetsTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfOtherNoncurrentAssetsTableTextBlock" xlink:to="iva_DisclosureOfOtherNoncurrentAssetsTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfOtherNoncurrentAssetsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure of other non current assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfOtherNoncurrentAssetsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Other Noncurrent Assets [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfOtherNoncurrentAssetsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of other non current assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsScheduleOfInventoryCurrentTableTextBlock" xlink:label="iva_IfrsScheduleOfInventoryCurrentTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsScheduleOfInventoryCurrentTableTextBlock" xlink:to="iva_IfrsScheduleOfInventoryCurrentTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsScheduleOfInventoryCurrentTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsScheduleOfInventoryCurrentTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Schedule of Inventory, Current [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsScheduleOfInventoryCurrentTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of inventories</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfTradeReceivablesTableTextBlock" xlink:label="iva_DisclosureOfTradeReceivablesTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfTradeReceivablesTableTextBlock" xlink:to="iva_DisclosureOfTradeReceivablesTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfTradeReceivablesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure of trade receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfTradeReceivablesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of Trade Receivables [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfTradeReceivablesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of trade receivables and others break down</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xlink:to="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other current assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of other current assets and receivables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfCashAndCashEquivalentsTableTextBlock" xlink:label="iva_DisclosureOfCashAndCashEquivalentsTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfCashAndCashEquivalentsTableTextBlock" xlink:to="iva_DisclosureOfCashAndCashEquivalentsTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfCashAndCashEquivalentsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure of cash and cash equivalents.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfCashAndCashEquivalentsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Cash And Cash Equivalents [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfCashAndCashEquivalentsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of cash and cash equivalents balance from the statement of cash flows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:to="ifrs-full_DisclosureOfClassesOfShareCapitalTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of classes of share capital [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:to="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Types of share-based payment arrangements [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:to="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Types of share-based payment arrangements [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BspceShareWarrantsMember" xlink:label="iva_BspceShareWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BspceShareWarrantsMember" xlink:to="iva_BspceShareWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BspceShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSPCE share warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BspceShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE Share Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BspceShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE Share Warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BsaShareWarrantMember" xlink:label="iva_BsaShareWarrantMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BsaShareWarrantMember" xlink:to="iva_BsaShareWarrantMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BsaShareWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA share warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BsaShareWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA Share warrant [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BsaShareWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA Share warrant</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BspceAndBsaShareWarrantsMember" xlink:label="iva_BspceAndBsaShareWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BspceAndBsaShareWarrantsMember" xlink:to="iva_BspceAndBsaShareWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BspceAndBsaShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSPCE and BSA share warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BspceAndBsaShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE and BSA Share Warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BonusShareAwardPlansMember" xlink:label="iva_BonusShareAwardPlansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BonusShareAwardPlansMember" xlink:to="iva_BonusShareAwardPlansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BonusShareAwardPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for bonus share award plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BonusShareAwardPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bonus Share Award Plans [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BonusShareAwardPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bonus share award plans (AGA)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LongTermIncentivePlanInPerformanceUnits2023Member" xlink:label="iva_LongTermIncentivePlanInPerformanceUnits2023Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LongTermIncentivePlanInPerformanceUnits2023Member" xlink:to="iva_LongTermIncentivePlanInPerformanceUnits2023Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LongTermIncentivePlanInPerformanceUnits2023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for 2023 long-term incentive plan in performance units or "PAGUP 2023".</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LongTermIncentivePlanInPerformanceUnits2023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-Term Incentive Plan In Performance Units, 2023 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LongTermIncentivePlanInPerformanceUnits2023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PAGUP 2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOptionsMember" xlink:label="ifrs-full_ShareOptionsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShareOptionsMember" xlink:to="ifrs-full_ShareOptionsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShareOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share options [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ShareOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock options</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:to="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of classes of share capital [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shareholders' equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory" xlink:to="ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of classes of share capital [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of changes in share capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory" xlink:to="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of terms and conditions of share-based payment arrangement [text block]</label>
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ScheduleOfValuationApproachForAbsaStructuredFinancingArrangementTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of valuation approach for ABSAs structured financing arrangement.</label>
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    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfAssumptionsUsedToMeasureRetirementBenefitObligationsExplanatory" xlink:label="iva_DisclosureOfAssumptionsUsedToMeasureRetirementBenefitObligationsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfProvisionRecordedInRespectOfDefinedBenefitSchemesAtEndOfEachReportingPeriodExplanatory" xlink:label="iva_DisclosureOfProvisionRecordedInRespectOfDefinedBenefitSchemesAtEndOfEachReportingPeriodExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfProvisionRecordedInRespectOfDefinedBenefitSchemesAtEndOfEachReportingPeriodExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Provision Recorded In Respect Of Defined Benefit Schemes At End Of Each Reporting Period, Explanatory</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfChangesInProvisionRecordedInRespectOfDefinedBenefitSchemesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The disclosure of detailed information about change in the provision recorded in respect of defined benefit schemes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfChangesInProvisionRecordedInRespectOfDefinedBenefitSchemesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Changes In Provision Recorded In Respect Of Defined Benefit Schemes, Explanatory</label>
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    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfExpensesRecognizedInStatementOfIncomeLossForRetirementBenefitObligationsExplanatory" xlink:label="iva_DisclosureOfExpensesRecognizedInStatementOfIncomeLossForRetirementBenefitObligationsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure for trade payables and other current liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Trade Payables and Other Current Liabilities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfTradePayablesAndOtherCurrentLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of trade payables and other current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:label="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of trade payables break down by payment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about financial instruments [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of financial assets and liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RevenueAndOtherIncomeTableTextBlock" xlink:label="iva_RevenueAndOtherIncomeTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RevenueAndOtherIncomeTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of revenue and other income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RevenueAndOtherIncomeTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue and Other Income [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RevenueAndOtherIncomeTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of revenues and other income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionExplanatory" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionExplanatory" xlink:to="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of attribution of expenses by nature to their function [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of attribution of expenses by nature to their function</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PersonnelCostsAndHeadcount" xlink:label="iva_PersonnelCostsAndHeadcount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PersonnelCostsAndHeadcount" xlink:to="iva_PersonnelCostsAndHeadcount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PersonnelCostsAndHeadcount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Personnel costs and headcount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PersonnelCostsAndHeadcount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Personnel costs and headcount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PersonnelCostsAndHeadcount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of personnel costs and headcount</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xlink:label="iva_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xlink:to="iva_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure of other operating income (expense).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Other Operating Income Expense [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of other operating income and expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancialIncomeAndExpensesTableTextBlock" xlink:label="iva_FinancialIncomeAndExpensesTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancialIncomeAndExpensesTableTextBlock" xlink:to="iva_FinancialIncomeAndExpensesTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancialIncomeAndExpensesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure of financial income and expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancialIncomeAndExpensesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Income and Expenses [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancialIncomeAndExpensesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of financial income and expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodInvestmentsTableTextBlock" xlink:label="iva_DisclosureOfShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodInvestmentsTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodInvestmentsTableTextBlock" xlink:to="iva_DisclosureOfShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodInvestmentsTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The tabular disclosure of share of profit loss of associates and joint ventures accounted for using equity method investments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Share Of Profit Loss Of Associates And Joint Ventures Accounted For Using Equity Method Investments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of share of net profit (loss) - Equity method</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="iva_IfrsScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:to="iva_IfrsScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carry forwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Schedule of Components of Income Tax Expense Benefit [Table text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of income tax expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EarningsPerShareExplanatory" xlink:label="ifrs-full_EarningsPerShareExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EarningsPerShareExplanatory" xlink:to="ifrs-full_EarningsPerShareExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EarningsPerShareExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Earnings per share [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EarningsPerShareExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of basic and diluted loss per share</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfCommitmentsRelatedOperationalActivitiesTableTextBlock" xlink:label="iva_DisclosureOfCommitmentsRelatedOperationalActivitiesTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DisclosureOfCommitmentsRelatedOperationalActivitiesTableTextBlock" xlink:to="iva_DisclosureOfCommitmentsRelatedOperationalActivitiesTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfCommitmentsRelatedOperationalActivitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of commitments related to operational activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfCommitmentsRelatedOperationalActivitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of Commitments Related Operational Activities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfCommitmentsRelatedOperationalActivitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Commitments given and received</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" xlink:to="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of transactions between related parties [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of compensation awarded to members of executive team</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk" xlink:label="ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk" xlink:to="ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sensitivity analysis for types of market risk [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of sensitivity analysis of the company's assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTableTextBlock" xlink:label="iva_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The disclosure of a maturity analysis for derivative and non-derivative financial liabilities, including the remaining contractual maturities for those derivative financial liabilities for which contractual maturities are essential for an understanding of the timing of the cash flows.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Maturity Analysis For Derivative And Non Derivative Financial Liabilities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of maturity analysis of financial liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeTable" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeTable" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of information about collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Collaborative Arrangement and Arrangement Other than Collaborative [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis" xlink:label="ifrs-full_GeographicalAreasAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GeographicalAreasAxis" xlink:to="ifrs-full_GeographicalAreasAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GeographicalAreasAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Geographical areas [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain" xlink:label="ifrs-full_GeographicalAreasDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GeographicalAreasDomain" xlink:to="ifrs-full_GeographicalAreasDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GeographicalAreasDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Geographical areas [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_JP" xlink:label="country_JP" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_JP" xlink:to="country_JP_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_JP_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">JAPAN</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_JP_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Japan</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis" xlink:label="ifrs-full_NonadjustingEventsAfterReportingPeriodAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NonadjustingEventsAfterReportingPeriodAxis" xlink:to="ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-adjusting events after reporting period [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:label="ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:to="ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-adjusting events after reporting period [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ReceiptOfPaymentsUnderLicensingArrangementsMember" xlink:label="iva_ReceiptOfPaymentsUnderLicensingArrangementsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ReceiptOfPaymentsUnderLicensingArrangementsMember" xlink:to="iva_ReceiptOfPaymentsUnderLicensingArrangementsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ReceiptOfPaymentsUnderLicensingArrangementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for receipt of payments under Licensing arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ReceiptOfPaymentsUnderLicensingArrangementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Receipt Of Payments Under Licensing Arrangements [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ReceiptOfPaymentsUnderLicensingArrangementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Receipt of payments under Licensing arrangements</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:to="ifrs-full_ClassesOfFinancialLiabilitiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial liabilities [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:to="ifrs-full_ClassesOfFinancialLiabilitiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial liabilities [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltyCertificateLiabilitiesMember" xlink:label="iva_RoyaltyCertificateLiabilitiesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RoyaltyCertificateLiabilitiesMember" xlink:to="iva_RoyaltyCertificateLiabilitiesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltyCertificateLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Royalty Certificate Liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RoyaltyCertificateLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificate Liabilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RoyaltyCertificateLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltyCertificates2023Member" xlink:label="iva_RoyaltyCertificates2023Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RoyaltyCertificates2023Member" xlink:to="iva_RoyaltyCertificates2023Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltyCertificates2023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to royalty certificates 2023.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RoyaltyCertificates2023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificates 2023 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RoyaltyCertificates2023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2023 Royalty Certificates</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltyCertificates2024Member" xlink:label="iva_RoyaltyCertificates2024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RoyaltyCertificates2024Member" xlink:to="iva_RoyaltyCertificates2024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltyCertificates2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for royalty certificates 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RoyaltyCertificates2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificates 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RoyaltyCertificates2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2024 Royalty Certificates</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis" xlink:to="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Information by collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Collaborative Arrangement and Arrangement Other than Collaborative [Axis]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain" xlink:to="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Collaborative Arrangement and Arrangement Other than Collaborative [Domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ClinicalDevelopmentProgramOfLanifibranorInJapanPhase1TrialMember" xlink:label="iva_ClinicalDevelopmentProgramOfLanifibranorInJapanPhase1TrialMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ClinicalDevelopmentProgramOfLanifibranorInJapanPhase1TrialMember" xlink:to="iva_ClinicalDevelopmentProgramOfLanifibranorInJapanPhase1TrialMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ClinicalDevelopmentProgramOfLanifibranorInJapanPhase1TrialMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the clinical development program of lanifibranor in Japan, Phase 1 trial.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ClinicalDevelopmentProgramOfLanifibranorInJapanPhase1TrialMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Clinical development program of lanifibranor in Japan, Phase 1 trial [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ClinicalDevelopmentProgramOfLanifibranorInJapanPhase1TrialMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Clinical development program of lanifibranor in Japan, Phase I trial</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicensingAndCollaborationAgreementWithCttqMember" xlink:label="iva_LicensingAndCollaborationAgreementWithCttqMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicensingAndCollaborationAgreementWithCttqMember" xlink:to="iva_LicensingAndCollaborationAgreementWithCttqMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicensingAndCollaborationAgreementWithCttqMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to Licensing and collaboration agreement with CTTQ.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicensingAndCollaborationAgreementWithCttqMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Licensing and collaboration agreement with CTTQ [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicensingAndCollaborationAgreementWithCttqMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Licensing and collaboration agreement with CTTQ</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicensingAgreementWithHepalysMember" xlink:label="iva_LicensingAgreementWithHepalysMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicensingAgreementWithHepalysMember" xlink:to="iva_LicensingAgreementWithHepalysMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicensingAgreementWithHepalysMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Licensing agreement with Hepalys.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicensingAgreementWithHepalysMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Licensing Agreement With Hepalys [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicensingAgreementWithHepalysMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Licensing agreement with Hepalys</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ServiceContractWithAvantSanteMember" xlink:label="iva_ServiceContractWithAvantSanteMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ServiceContractWithAvantSanteMember" xlink:to="iva_ServiceContractWithAvantSanteMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ServiceContractWithAvantSanteMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for service contract with Avant Sante.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ServiceContractWithAvantSanteMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Service contract with Avant Sante [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ServiceContractWithAvantSanteMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Service contract with Avant Sante</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis" xlink:label="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis" xlink:to="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Underlying equity instrument and depositary receipts [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsDomain" xlink:label="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsDomain" xlink:to="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Underlying equity instrument and depositary receipts [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AdrMember" xlink:label="dei_AdrMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AdrMember" xlink:to="dei_AdrMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AdrMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adr [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_AdrMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ADS</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems" xlink:to="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of information about collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Company information</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenues and other income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collaborative Arrangements</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSharesPerDepositaryReceipt" xlink:label="iva_NumberOfSharesPerDepositaryReceipt" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSharesPerDepositaryReceipt" xlink:to="iva_NumberOfSharesPerDepositaryReceipt_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSharesPerDepositaryReceipt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares per depositary receipt.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSharesPerDepositaryReceipt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares per depositary receipt</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RestructuringAndRelatedCostsPlannedWorkforceReduction" xlink:label="iva_RestructuringAndRelatedCostsPlannedWorkforceReduction" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RestructuringAndRelatedCostsPlannedWorkforceReduction" xlink:to="iva_RestructuringAndRelatedCostsPlannedWorkforceReduction_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RestructuringAndRelatedCostsPlannedWorkforceReduction_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restructuring and related costs, planned workforce reduction.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RestructuringAndRelatedCostsPlannedWorkforceReduction_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restructuring and related costs, planned workforce reduction</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfParticipantsInPhase1TrialOfLanifibranor" xlink:label="iva_NumberOfParticipantsInPhase1TrialOfLanifibranor" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfParticipantsInPhase1TrialOfLanifibranor" xlink:to="iva_NumberOfParticipantsInPhase1TrialOfLanifibranor_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfParticipantsInPhase1TrialOfLanifibranor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the number of participants Phase 1 trial of lanifibranor.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfParticipantsInPhase1TrialOfLanifibranor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Participants in Phase I Trial of Lanifibranor</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfParticipantsInPhase1TrialOfLanifibranor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of participants in Phase I trial of lanifibranor</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfDaysInPhase1TrialOfLanifibranor" xlink:label="iva_NumberOfDaysInPhase1TrialOfLanifibranor" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfDaysInPhase1TrialOfLanifibranor" xlink:to="iva_NumberOfDaysInPhase1TrialOfLanifibranor_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfDaysInPhase1TrialOfLanifibranor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the number of days of the Phase I trial of lanifibranor.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfDaysInPhase1TrialOfLanifibranor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Days in Phase 1 Trial of Lanifibranor</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfDaysInPhase1TrialOfLanifibranor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of days in Phase I trial of Lanifibranor</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementMilestonePaymentReceivableUponAchievementOfCertainMilestone" xlink:label="iva_LicenseAndCollaborationAgreementMilestonePaymentReceivableUponAchievementOfCertainMilestone" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementMilestonePaymentReceivableUponAchievementOfCertainMilestone" xlink:to="iva_LicenseAndCollaborationAgreementMilestonePaymentReceivableUponAchievementOfCertainMilestone_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementMilestonePaymentReceivableUponAchievementOfCertainMilestone_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the amount of milestone payment receivable in license and collaboration agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementMilestonePaymentReceivableUponAchievementOfCertainMilestone_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License and Collaboration Agreement, Milestone Payment Receivable upon Achievement of Certain Milestone</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementMilestonePaymentReceivableUponAchievementOfCertainMilestone_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Milestone payment receivable</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ProceedsFromLicensingArrangements" xlink:label="iva_ProceedsFromLicensingArrangements" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ProceedsFromLicensingArrangements" xlink:to="iva_ProceedsFromLicensingArrangements_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ProceedsFromLicensingArrangements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount paid on licensing arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ProceedsFromLicensingArrangements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds From Licensing Arrangements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ProceedsFromLicensingArrangements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount received on licensing arrangements</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSubjectsRandomized" xlink:label="iva_NumberOfSubjectsRandomized" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSubjectsRandomized" xlink:to="iva_NumberOfSubjectsRandomized_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSubjectsRandomized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the number of subjects randomized.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSubjectsRandomized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Subjects Randomized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_NumberOfSubjectsRandomized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of patients randomized</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsSharesIssuedPricePerShare" xlink:label="iva_IfrsSharesIssuedPricePerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsSharesIssuedPricePerShare" xlink:to="iva_IfrsSharesIssuedPricePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsSharesIssuedPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Per share or per unit amount of equity securities issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsSharesIssuedPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Shares Issued, Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsSharesIssuedPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Price per share</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfActiveClinicalSitesInNativ3Trial" xlink:label="iva_NumberOfActiveClinicalSitesInNativ3Trial" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfActiveClinicalSitesInNativ3Trial" xlink:to="iva_NumberOfActiveClinicalSitesInNativ3Trial_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfActiveClinicalSitesInNativ3Trial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of active clinical sites in NATiV3 trial.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfActiveClinicalSitesInNativ3Trial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of active clinical sites in NATiV3 trial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfActiveClinicalSitesInNativ3Trial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of active clinical sites in NATiV3 trial</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EstimatedAmountPayableUnderAgreement" xlink:label="iva_EstimatedAmountPayableUnderAgreement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EstimatedAmountPayableUnderAgreement" xlink:to="iva_EstimatedAmountPayableUnderAgreement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EstimatedAmountPayableUnderAgreement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the estimated amount payable under the agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EstimatedAmountPayableUnderAgreement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Estimated Amount Payable Under Agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_EstimatedAmountPayableUnderAgreement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Estimated amount payable</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfDiscountToVolumeWeightedAverageTradingPrice" xlink:label="iva_PercentageOfDiscountToVolumeWeightedAverageTradingPrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfDiscountToVolumeWeightedAverageTradingPrice" xlink:to="iva_PercentageOfDiscountToVolumeWeightedAverageTradingPrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfDiscountToVolumeWeightedAverageTradingPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of discount to volume weighted average trading price of shares applied to the price of the stock offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfDiscountToVolumeWeightedAverageTradingPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Discount To Volume Weighted Average Trading Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfDiscountToVolumeWeightedAverageTradingPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of discount to volume weighted average trading price of Company's ADS</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountInvoicedToCounterparty" xlink:label="iva_AmountInvoicedToCounterparty" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountInvoicedToCounterparty" xlink:to="iva_AmountInvoicedToCounterparty_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountInvoicedToCounterparty_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This amount represents the information of invoiced to counterparty.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountInvoicedToCounterparty_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount Invoiced To Counterparty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AmountInvoicedToCounterparty_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Milestone payment received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_AmountInvoicedToCounterparty_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount invoiced to counterparty</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountInvoicedToCounterpartyForInitialPayment" xlink:label="iva_AmountInvoicedToCounterpartyForInitialPayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountInvoicedToCounterpartyForInitialPayment" xlink:to="iva_AmountInvoicedToCounterpartyForInitialPayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountInvoicedToCounterpartyForInitialPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This amount represents the information of invoiced to counterparty for initial payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountInvoicedToCounterpartyForInitialPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount Invoiced To Counterparty For Initial Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AmountInvoicedToCounterpartyForInitialPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount invoiced to counterparty for milestone payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountInvoicedToCounterpartyForAdditionalPayment" xlink:label="iva_AmountInvoicedToCounterpartyForAdditionalPayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountInvoicedToCounterpartyForAdditionalPayment" xlink:to="iva_AmountInvoicedToCounterpartyForAdditionalPayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountInvoicedToCounterpartyForAdditionalPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This amount represents the information of invoiced to counterparty for additional payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountInvoicedToCounterpartyForAdditionalPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount Invoiced To Counterparty For Additional Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AmountInvoicedToCounterpartyForAdditionalPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount invoiced to counterparty for additional payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationArrangementCreditNoteRecognized" xlink:label="iva_LicenseAndCollaborationArrangementCreditNoteRecognized" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationArrangementCreditNoteRecognized" xlink:to="iva_LicenseAndCollaborationArrangementCreditNoteRecognized_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationArrangementCreditNoteRecognized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Value of credit note recognized during the period under license and collaborative arrangement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationArrangementCreditNoteRecognized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Arrangement, Credit Note Recognized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationArrangementCreditNoteRecognized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License and collaboration arrangement, credit note recognized</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes" xlink:label="iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes" xlink:to="iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount received by the entity from licensing and collaborative arrangements, attributable to withholding taxes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Licensing And Collaboration Agreement, Amount Received Attributable To Withholding Taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount received attributable to withholding taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotionalAmount" xlink:label="ifrs-full_NotionalAmount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NotionalAmount" xlink:to="ifrs-full_NotionalAmount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NotionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notional amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NotionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notional amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NotionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total amount of loan</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NetProceedsFromIssuingShares" xlink:label="iva_NetProceedsFromIssuingShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NetProceedsFromIssuingShares" xlink:to="iva_NetProceedsFromIssuingShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NetProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of net proceeds from issuing shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NetProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net Proceeds From Issuing Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NetProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net proceeds from issuing shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDepositaryReceiptsTable" xlink:label="ifrs-full_DisclosureOfDepositaryReceiptsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDepositaryReceiptsTable" xlink:to="ifrs-full_DisclosureOfDepositaryReceiptsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDepositaryReceiptsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of depositary receipts [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesAxis" xlink:label="ifrs-full_ProductsAndServicesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProductsAndServicesAxis" xlink:to="ifrs-full_ProductsAndServicesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProductsAndServicesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Products and services [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesDomain" xlink:label="ifrs-full_ProductsAndServicesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProductsAndServicesDomain" xlink:to="ifrs-full_ProductsAndServicesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProductsAndServicesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Products and services [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LanifibranorMember" xlink:label="iva_LanifibranorMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LanifibranorMember" xlink:to="iva_LanifibranorMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LanifibranorMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Lanifbranor</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LanifibranorMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lanifibranor [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LanifibranorMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lanifibranor</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsClassOfWarrantOrRightAxis" xlink:label="iva_IfrsClassOfWarrantOrRightAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsClassOfWarrantOrRightAxis" xlink:to="iva_IfrsClassOfWarrantOrRightAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsClassOfWarrantOrRightAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Information by type of warrant or right issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsClassOfWarrantOrRightAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Class of Warrant or Right [Axis]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsClassOfWarrantOrRightDomain" xlink:label="iva_IfrsClassOfWarrantOrRightDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsClassOfWarrantOrRightDomain" xlink:to="iva_IfrsClassOfWarrantOrRightDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Name of the class or type of warrant or right outstanding. Warrants and rights represent derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Class of Warrant or Right [Domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T1BsaWarrantsMember" xlink:label="iva_T1BsaWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T1BsaWarrantsMember" xlink:to="iva_T1BsaWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T1BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T1 BSA warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T1BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 BSA Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T1BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 BSA Warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T1BisBsaWarrantsMember" xlink:label="iva_T1BisBsaWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T1BisBsaWarrantsMember" xlink:to="iva_T1BisBsaWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T1BisBsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T1 bis BSA warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T1BisBsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 bis BSA Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T1BisBsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 bis BSA Warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T2BsaPrefundedWarrantsMember" xlink:label="iva_T2BsaPrefundedWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T2BsaPrefundedWarrantsMember" xlink:to="iva_T2BsaPrefundedWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T2BsaPrefundedWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T2 BSA pre-funded warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T2BsaPrefundedWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 BSA Prefunded Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T2BsaPrefundedWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 BSA Prefunded Warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T3BsaWarrantsMember" xlink:label="iva_T3BsaWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T3BsaWarrantsMember" xlink:to="iva_T3BsaWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T3BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T3 BSA warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T3BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T3 BSA Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_T3BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T3 BSA warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T3BsaShareWarrantsMember" xlink:label="iva_T3BsaShareWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T3BsaShareWarrantsMember" xlink:to="iva_T3BsaShareWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T3BsaShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to T3 BSA share warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T3BsaShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T3 Bsa Share Warrants [Member]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T3BsasWarrantsAttachedToT2NewSharesMember" xlink:label="iva_T3BsasWarrantsAttachedToT2NewSharesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T3BsasWarrantsAttachedToT2NewSharesMember" xlink:to="iva_T3BsasWarrantsAttachedToT2NewSharesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T3BsasWarrantsAttachedToT2NewSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T3 BSA warrants attached to T2 new shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T3BsasWarrantsAttachedToT2NewSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T3 BSAs Warrants Attached To T2 New Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T3BsasWarrantsAttachedToT2NewSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T3 BSAs Warrants Attached To T2 New Shares</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T3BsasWarrantsAttachedToT2BsaWarrantsMember" xlink:label="iva_T3BsasWarrantsAttachedToT2BsaWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T3BsasWarrantsAttachedToT2BsaWarrantsMember" xlink:to="iva_T3BsasWarrantsAttachedToT2BsaWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T3BsasWarrantsAttachedToT2BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T3 BSA warrants attached to T2 BSA warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T3BsasWarrantsAttachedToT2BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T3 BSAs Warrants Attached To T2 BSA Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T3BsasWarrantsAttachedToT2BsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T3 BSAs Warrants Attached To T2 BSA Warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AbsaWarrantsMember" xlink:label="iva_AbsaWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AbsaWarrantsMember" xlink:to="iva_AbsaWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AbsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents ABSA warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AbsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ABSA warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AbsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ABSA warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PreFundedWarrantsBsasMember" xlink:label="iva_PreFundedWarrantsBsasMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PreFundedWarrantsBsasMember" xlink:to="iva_PreFundedWarrantsBsasMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PreFundedWarrantsBsasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for pre-funded warrants - BSAs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PreFundedWarrantsBsasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Pre-funded Warrants BSAs [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PreFundedWarrantsBsasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 and T3 BSAs</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PfwBsaMember" xlink:label="iva_PfwBsaMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PfwBsaMember" xlink:to="iva_PfwBsaMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PfwBsaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents PFW-BSAs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PfwBsaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PFW BSA [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PfwBsaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PFW-BSAs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:to="ifrs-full_ClassesOfFinancialInstrumentsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial instruments [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:to="ifrs-full_ClassesOfFinancialInstrumentsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial instruments [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T2NewSharesCallOptionsMember" xlink:label="iva_T2NewSharesCallOptionsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T2NewSharesCallOptionsMember" xlink:to="iva_T2NewSharesCallOptionsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T2NewSharesCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T2 New Shares call option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T2NewSharesCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Shares Call options [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T2NewSharesCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Shares Call options</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T2BsaCallOptionsMember" xlink:label="iva_T2BsaCallOptionsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T2BsaCallOptionsMember" xlink:to="iva_T2BsaCallOptionsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T2BsaCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T2 BSA call option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T2BsaCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 BSA Call options [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T2BsaCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 BSA Call options</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis" xlink:label="ifrs-full_BorrowingsByNameAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BorrowingsByNameAxis" xlink:to="ifrs-full_BorrowingsByNameAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BorrowingsByNameAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings by name [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain" xlink:label="ifrs-full_BorrowingsByNameDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BorrowingsByNameDomain" xlink:to="ifrs-full_BorrowingsByNameDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BorrowingsByNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings by name [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinanceContractWithEuropeanInvestmentBankMember" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinanceContractWithEuropeanInvestmentBankMember" xlink:to="iva_FinanceContractWithEuropeanInvestmentBankMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the Finance contract with the European Investment Bank</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance contract with European Investment Bank [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance contract with EIB</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance contract with European Investment Bank</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember" xlink:to="iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to second tranche of the finance contract with European investment bank ("EIB").</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance Contract With European Investment Bank, Second Tranche [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance contract with EIB, second tranche (Tranche B)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankSecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB Tranche B 2024</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T1NewShareMember" xlink:label="iva_T1NewShareMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T1NewShareMember" xlink:to="iva_T1NewShareMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T1NewShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to T1 new shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T1NewShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 New Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T1NewShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 New Share</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T1BisSharesMember" xlink:label="iva_T1BisSharesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T1BisSharesMember" xlink:to="iva_T1BisSharesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T1BisSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T1 bis Shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T1BisSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 BIS Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T1BisSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 bis Shares</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T2NewShareMember" xlink:label="iva_T2NewShareMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T2NewShareMember" xlink:to="iva_T2NewShareMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T2NewShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T2 New Share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T2NewShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T2NewShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Share</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T2NewShareAndT3BsasMember" xlink:label="iva_T2NewShareAndT3BsasMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T2NewShareAndT3BsasMember" xlink:to="iva_T2NewShareAndT3BsasMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T2NewShareAndT3BsasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T2 new shares and T3 BSAs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T2NewShareAndT3BsasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Share And T3 BSAs [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T2NewShareAndT3BsasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ABSAs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis" xlink:label="ifrs-full_RangeAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RangeAxis" xlink:to="ifrs-full_RangeAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RangeAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Range [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain" xlink:label="ifrs-full_RangeDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RangeDomain" xlink:to="ifrs-full_RangeDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RangeDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Range [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember" xlink:label="ifrs-full_TopOfRangeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TopOfRangeMember" xlink:to="ifrs-full_TopOfRangeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TopOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Top of range [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TopOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingArrangementInThreeTranches2024Member" xlink:label="iva_FinancingArrangementInThreeTranches2024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingArrangementInThreeTranches2024Member" xlink:to="iva_FinancingArrangementInThreeTranches2024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingArrangementInThreeTranches2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the 2024 Financing arrangement in three tranches.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingArrangementInThreeTranches2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing arrangement in three tranches 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancingArrangementInThreeTranches2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2024 Financing arrangement in three tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingArrangementInThreeTranches2024TrancheIMember" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingArrangementInThreeTranches2024TrancheIMember" xlink:to="iva_FinancingArrangementInThreeTranches2024TrancheIMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the 2024 Financing arrangement in three tranches, Tranche I.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing arrangement in three tranches 2024, Tranche I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche I, 2024 Financing arrangement in three tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIMember" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIMember" xlink:to="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the 2024 Financing arrangement in three tranches, Tranche I, phase I.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing arrangement in three tranches 2024, Tranche I, phase I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche I, phase I, 2024 Financing arrangement in three tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIiMember" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIiMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIiMember" xlink:to="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIiMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the 2024 Financing arrangement in three tranches, Tranche I, phase II.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing arrangement in three tranches 2024, Tranche I, phase II [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIPhaseIiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche I, phase II, 2024 Financing arrangement in three tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingArrangementInThreeTranches2024TrancheIiAndTrancheIiiMember" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiAndTrancheIiiMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingArrangementInThreeTranches2024TrancheIiAndTrancheIiiMember" xlink:to="iva_FinancingArrangementInThreeTranches2024TrancheIiAndTrancheIiiMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiAndTrancheIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the 2024 Financing arrangement in three tranches, Tranche II and Tranche III.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiAndTrancheIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing arrangement in three tranches 2024, Tranche II and Tranche III [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiAndTrancheIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche II and Tranche III, 2024 Financing arrangement in three tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingArrangementInThreeTranches2024TrancheIiMember" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingArrangementInThreeTranches2024TrancheIiMember" xlink:to="iva_FinancingArrangementInThreeTranches2024TrancheIiMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the 2024 Financing arrangement in three tranches, Tranche II.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing arrangement in three tranches 2024, Tranche II [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche II, 2024 Financing arrangement in three tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RegisteredUnderwrittenPublicOfferingMember" xlink:label="iva_RegisteredUnderwrittenPublicOfferingMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RegisteredUnderwrittenPublicOfferingMember" xlink:to="iva_RegisteredUnderwrittenPublicOfferingMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RegisteredUnderwrittenPublicOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for registered underwritten public offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RegisteredUnderwrittenPublicOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Registered Underwritten Public Offering [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RegisteredUnderwrittenPublicOfferingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Registered underwritten public offering</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_UpsizedUnderwrittenPublicOfferingIncludingUnderwritersOptionsAtMarketProgramMember" xlink:label="iva_UpsizedUnderwrittenPublicOfferingIncludingUnderwritersOptionsAtMarketProgramMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_UpsizedUnderwrittenPublicOfferingIncludingUnderwritersOptionsAtMarketProgramMember" xlink:to="iva_UpsizedUnderwrittenPublicOfferingIncludingUnderwritersOptionsAtMarketProgramMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_UpsizedUnderwrittenPublicOfferingIncludingUnderwritersOptionsAtMarketProgramMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to upsized underwritten public offering including underwriters' options pursuant to At-The-Market Program.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_UpsizedUnderwrittenPublicOfferingIncludingUnderwritersOptionsAtMarketProgramMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Upsized Underwritten Public Offering Including Underwriters' Options, At the Market Program [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_UpsizedUnderwrittenPublicOfferingIncludingUnderwritersOptionsAtMarketProgramMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Upsized underwritten public offering including underwriters' options, at the market program</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_August2023ShareIssuanceMember" xlink:label="iva_August2023ShareIssuanceMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_August2023ShareIssuanceMember" xlink:to="iva_August2023ShareIssuanceMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_August2023ShareIssuanceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents august 2023.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_August2023ShareIssuanceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">August 2023 Share Issuance [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_August2023ShareIssuanceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">August 2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDepositaryReceiptsLineItems" xlink:label="ifrs-full_DisclosureOfDepositaryReceiptsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDepositaryReceiptsLineItems" xlink:to="ifrs-full_DisclosureOfDepositaryReceiptsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDepositaryReceiptsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule disclosing information about depositary receipts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDepositaryReceiptsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Company information</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany" xlink:label="iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany" xlink:to="iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Aggregate amount to be received by the company, either in exchange for new shares or warrants of the Company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Aggregate Amount To Be Received Either In Exchange For New Shares or Warrants Of The Company</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Structured Financing amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_AggregateAmountToBeReceivedEitherInExchangeForNewSharesOrWarrantsOfCompany_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Structured equity financing amount</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ProceedsFromIssuanceOfSharesAndWarrants" xlink:label="iva_ProceedsFromIssuanceOfSharesAndWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ProceedsFromIssuanceOfSharesAndWarrants" xlink:to="iva_ProceedsFromIssuanceOfSharesAndWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ProceedsFromIssuanceOfSharesAndWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from issuance of shares and warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ProceedsFromIssuanceOfSharesAndWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from issuance of shares and warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ProceedsFromIssuanceOfSharesAndWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross proceeds</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NetProceedsFromIssuanceOfSharesAndWarrants" xlink:label="iva_NetProceedsFromIssuanceOfSharesAndWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NetProceedsFromIssuanceOfSharesAndWarrants" xlink:to="iva_NetProceedsFromIssuanceOfSharesAndWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NetProceedsFromIssuanceOfSharesAndWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net proceeds from issuance of shares and warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NetProceedsFromIssuanceOfSharesAndWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net proceeds from issuance of shares and warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NetProceedsFromIssuanceOfSharesAndWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net proceeds</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MaximumAggregateSalesProceedsFromIssuanceOfShares" xlink:label="iva_MaximumAggregateSalesProceedsFromIssuanceOfShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MaximumAggregateSalesProceedsFromIssuanceOfShares" xlink:to="iva_MaximumAggregateSalesProceedsFromIssuanceOfShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MaximumAggregateSalesProceedsFromIssuanceOfShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the maximum aggregate sales proceeds under issuance of shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MaximumAggregateSalesProceedsFromIssuanceOfShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum Aggregate Sales Proceeds From Issuance Of Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MaximumAggregateSalesProceedsFromIssuanceOfShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum aggregate sales proceeds</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_GrossProceedsFromIssuanceOfEquityAndRoyaltyCertificates" xlink:label="iva_GrossProceedsFromIssuanceOfEquityAndRoyaltyCertificates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_GrossProceedsFromIssuanceOfEquityAndRoyaltyCertificates" xlink:to="iva_GrossProceedsFromIssuanceOfEquityAndRoyaltyCertificates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_GrossProceedsFromIssuanceOfEquityAndRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of gross proceeds from the issuance of share capital and royalty certificates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_GrossProceedsFromIssuanceOfEquityAndRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross Proceeds from Issuance of Equity and Royalty Certificates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_GrossProceedsFromIssuanceOfEquityAndRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross proceeds from issuance of equity and royalty certificates</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockIssuedDuringPeriodShares" xlink:label="iva_StockIssuedDuringPeriodShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockIssuedDuringPeriodShares" xlink:to="iva_StockIssuedDuringPeriodShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockIssuedDuringPeriodShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of shares issued during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockIssuedDuringPeriodShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_StockIssuedDuringPeriodShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares issued during the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ParValuePerShare" xlink:label="ifrs-full_ParValuePerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ParValuePerShare" xlink:to="ifrs-full_ParValuePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ParValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Par value per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ParValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Par value of share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ParValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Nominal value</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SubscriptionPricePerShare" xlink:label="iva_SubscriptionPricePerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SubscriptionPricePerShare" xlink:to="iva_SubscriptionPricePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SubscriptionPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price per share in new issue of shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SubscriptionPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SubscriptionPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfWarrantsIssued" xlink:label="iva_NumberOfWarrantsIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfWarrantsIssued" xlink:to="iva_NumberOfWarrantsIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfWarrantsIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfWarrantsIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfWarrantsIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants issued</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Class of Warrant or Right, Number of Securities Called by Each Warrant or Right</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares per warrant</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares per instrument</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfWarrantsInEachUnit" xlink:label="iva_NumberOfWarrantsInEachUnit" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfWarrantsInEachUnit" xlink:to="iva_NumberOfWarrantsInEachUnit_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfWarrantsInEachUnit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants in each unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfWarrantsInEachUnit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants in each unit</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SubscriptionPricePerUnit" xlink:label="iva_SubscriptionPricePerUnit" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SubscriptionPricePerUnit" xlink:to="iva_SubscriptionPricePerUnit_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SubscriptionPricePerUnit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price per unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SubscriptionPricePerUnit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price per unit</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesRepresentedByOneDepositaryReceipt" xlink:label="ifrs-full_NumberOfSharesRepresentedByOneDepositaryReceipt" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfSharesRepresentedByOneDepositaryReceipt" xlink:to="ifrs-full_NumberOfSharesRepresentedByOneDepositaryReceipt_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfSharesRepresentedByOneDepositaryReceipt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares represented by one depositary receipt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfSharesRepresentedByOneDepositaryReceipt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of ordinary shares represented by each ADS</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsExercisableTerm" xlink:label="iva_WarrantsExercisableTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsExercisableTerm" xlink:to="iva_WarrantsExercisableTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsExercisableTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term of warrants exercisable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsExercisableTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Exercisable Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantsExercisableTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants exercisable term</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Class of Warrant or Right, Number of Securities Called by Warrants or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares underlying in EIB</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares callable by warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:label="iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:to="iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price per share or per unit of warrants or rights outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Class of Warrant or Right, Exercise Price of Warrants or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price of warrant</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price per warrant</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ClassOfWarrantOrRightSubscriptionPrice" xlink:label="iva_ClassOfWarrantOrRightSubscriptionPrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ClassOfWarrantOrRightSubscriptionPrice" xlink:to="iva_ClassOfWarrantOrRightSubscriptionPrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ClassOfWarrantOrRightSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price per share or per unit of warrants or rights outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ClassOfWarrantOrRightSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class Of Warrant Or Right, Subscription Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ClassOfWarrantOrRightSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price per warrant</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdditionalProceedsReceivableUponExerciseOfWarrants" xlink:label="iva_AdditionalProceedsReceivableUponExerciseOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdditionalProceedsReceivableUponExerciseOfWarrants" xlink:to="iva_AdditionalProceedsReceivableUponExerciseOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdditionalProceedsReceivableUponExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of additional proceeds receivable upon exercise of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdditionalProceedsReceivableUponExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional Proceeds Receivable Upon Exercise Of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AdditionalProceedsReceivableUponExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional proceeds receivable upon exercise of warrants</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities" xlink:label="ifrs-full_DerivativeFinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DerivativeFinancialLiabilities" xlink:to="ifrs-full_DerivativeFinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivative financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivatives</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfDilutionSubjectToRegulatoryLimitForAggregateSalesProceeds" xlink:label="iva_PercentageOfDilutionSubjectToRegulatoryLimitForAggregateSalesProceeds" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfDilutionSubjectToRegulatoryLimitForAggregateSalesProceeds" xlink:to="iva_PercentageOfDilutionSubjectToRegulatoryLimitForAggregateSalesProceeds_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfDilutionSubjectToRegulatoryLimitForAggregateSalesProceeds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the percentage of dilution subject to regulatory limit for aggregate sales proceeds under issuance of shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfDilutionSubjectToRegulatoryLimitForAggregateSalesProceeds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Dilution Subject To Regulatory Limit For Aggregate Sales Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfDilutionSubjectToRegulatoryLimitForAggregateSalesProceeds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of dilution subject to regulatory limit</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RegulatoryLimitForDilutionRollingPeriod" xlink:label="iva_RegulatoryLimitForDilutionRollingPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RegulatoryLimitForDilutionRollingPeriod" xlink:to="iva_RegulatoryLimitForDilutionRollingPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RegulatoryLimitForDilutionRollingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The rolling period for regulatory limit of dilution under the sale of stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RegulatoryLimitForDilutionRollingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Regulatory Limit for Dilution, Rolling Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RegulatoryLimitForDilutionRollingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Rolling period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClosingForeignExchangeRate" xlink:label="ifrs-full_ClosingForeignExchangeRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClosingForeignExchangeRate" xlink:to="ifrs-full_ClosingForeignExchangeRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClosingForeignExchangeRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Closing foreign exchange rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ClosingForeignExchangeRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exchange rate at the end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ClosingForeignExchangeRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exchange rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfAnnualRoyaltiesOnFutureSalesForRoyaltyCertificateHolders" xlink:label="iva_PercentageOfAnnualRoyaltiesOnFutureSalesForRoyaltyCertificateHolders" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfAnnualRoyaltiesOnFutureSalesForRoyaltyCertificateHolders" xlink:to="iva_PercentageOfAnnualRoyaltiesOnFutureSalesForRoyaltyCertificateHolders_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfAnnualRoyaltiesOnFutureSalesForRoyaltyCertificateHolders_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Annual Royalties On Future Sales for Royalty Certificate Holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfAnnualRoyaltiesOnFutureSalesForRoyaltyCertificateHolders_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Annual Royalties On Future Sales for Royalty Certificate Holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_PercentageOfAnnualRoyaltiesOnFutureSalesForRoyaltyCertificateHolders_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of right annual royalties on future net sales for royalty certificate holders</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MaximumRoyaltiesPayableToRoyaltyCertificateHolders" xlink:label="iva_MaximumRoyaltiesPayableToRoyaltyCertificateHolders" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MaximumRoyaltiesPayableToRoyaltyCertificateHolders" xlink:to="iva_MaximumRoyaltiesPayableToRoyaltyCertificateHolders_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MaximumRoyaltiesPayableToRoyaltyCertificateHolders_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum royalties payable to royalty certificate holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MaximumRoyaltiesPayableToRoyaltyCertificateHolders_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum royalties payable to royalty certificate holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MaximumRoyaltiesPayableToRoyaltyCertificateHolders_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum royalties payable to royalty certificate holders</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TermOfRoyaltyCertificate" xlink:label="iva_TermOfRoyaltyCertificate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TermOfRoyaltyCertificate" xlink:to="iva_TermOfRoyaltyCertificate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TermOfRoyaltyCertificate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term of royalty certificate in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TermOfRoyaltyCertificate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term Of Royalty Certificate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TermOfRoyaltyCertificate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term of royalty certificate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xlink:to="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of terms and conditions of share-based payment arrangement [table]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewBonusShareAwardPlanAga2021Member" xlink:label="iva_NewBonusShareAwardPlanAga2021Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewBonusShareAwardPlanAga2021Member" xlink:to="iva_NewBonusShareAwardPlanAga2021Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewBonusShareAwardPlanAga2021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for New bonus share award plans (AGA 2021)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewBonusShareAwardPlanAga2021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NewBonusShareAwardPlanAga2021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewBonusShareAwardPlanAga20211Member" xlink:label="iva_NewBonusShareAwardPlanAga20211Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewBonusShareAwardPlanAga20211Member" xlink:to="iva_NewBonusShareAwardPlanAga20211Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewBonusShareAwardPlanAga20211Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for New bonus share award plans (AGA 2021-1)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewBonusShareAwardPlanAga20211Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021-1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NewBonusShareAwardPlanAga20211Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021-1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_NewBonusShareAwardPlanAga20211Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA - Plan 2021 - 1</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewBonusShareAwardPlanAga2021BisMember" xlink:label="iva_NewBonusShareAwardPlanAga2021BisMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewBonusShareAwardPlanAga2021BisMember" xlink:to="iva_NewBonusShareAwardPlanAga2021BisMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewBonusShareAwardPlanAga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for New bonus share award plans (AGA 2021-bis).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewBonusShareAwardPlanAga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021-bis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NewBonusShareAwardPlanAga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021-bis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_NewBonusShareAwardPlanAga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA - Plan 2021 - bis</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20231Member" xlink:label="iva_Aga20231Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20231Member" xlink:to="iva_Aga20231Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20231Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for New bonus share award plans (AGA 2023-2).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20231Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2023-1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20231Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2023-1</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewBonusShareAwardPlan20231Member" xlink:label="iva_NewBonusShareAwardPlan20231Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewBonusShareAwardPlan20231Member" xlink:to="iva_NewBonusShareAwardPlan20231Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewBonusShareAwardPlan20231Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for New bonus share award plans (AGA 2023-1).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewBonusShareAwardPlan20231Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">New Bonus Share Award Plan 2023-1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NewBonusShareAwardPlan20231Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2023-1</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewBonusShareAwardPlan20232Member" xlink:label="iva_NewBonusShareAwardPlan20232Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewBonusShareAwardPlan20232Member" xlink:to="iva_NewBonusShareAwardPlan20232Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewBonusShareAwardPlan20232Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for New bonus share award plans (AGA 2023-2).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewBonusShareAwardPlan20232Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2023-2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NewBonusShareAwardPlan20232Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2023-2</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20241Member" xlink:label="iva_Aga20241Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20241Member" xlink:to="iva_Aga20241Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20241Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2024-1.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20241Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20241Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Aga20241Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-1 (Tr1 - Tr2 - Tr3)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20242Member" xlink:label="iva_Aga20242Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20242Member" xlink:to="iva_Aga20242Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20242Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2024-2.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20242Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20242Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-2</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Aga20242Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-2 (Tr1 - Tr2 - Tr3)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20243Member" xlink:label="iva_Aga20243Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20243Member" xlink:to="iva_Aga20243Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20243Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2024-3.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20243Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-3 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20243Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-3</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Aga20243Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-3 (Tr1 - Tr2 - Tr3)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20244Member" xlink:label="iva_Aga20244Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20244Member" xlink:to="iva_Aga20244Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20244Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2024-4.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20244Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-4 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20244Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-4</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Aga20244Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-4 (Tr1 - Tr2 - Tr3)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20251Member" xlink:label="iva_Aga20251Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20251Member" xlink:to="iva_Aga20251Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2025-1.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Aga20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-1 (Tr1 - Tr2 - Tr3)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20252Member" xlink:label="iva_Aga20252Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20252Member" xlink:to="iva_Aga20252Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2025-2.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-2</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20253Member" xlink:label="iva_Aga20253Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20253Member" xlink:to="iva_Aga20253Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20253Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2025-3.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20253Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-3 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20253Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-3</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20254Member" xlink:label="iva_Aga20254Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20254Member" xlink:to="iva_Aga20254Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20254Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2025-4.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20254Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-4 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20254Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-4</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20255Member" xlink:label="iva_Aga20255Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20255Member" xlink:to="iva_Aga20255Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20255Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2025-5.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20255Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-5 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20255Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-5</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockOptionsPlan20241Member" xlink:label="iva_StockOptionsPlan20241Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockOptionsPlan20241Member" xlink:to="iva_StockOptionsPlan20241Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockOptionsPlan20241Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the stock option plan 'SO 2024-1'.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockOptionsPlan20241Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Options Plan 2024-1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_StockOptionsPlan20241Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">SO 2024-1</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockOptionsPlan20242Member" xlink:label="iva_StockOptionsPlan20242Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockOptionsPlan20242Member" xlink:to="iva_StockOptionsPlan20242Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockOptionsPlan20242Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the stock option plan 'SO 2024-2'.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockOptionsPlan20242Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Options Plan 2024-2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_StockOptionsPlan20242Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">SO 2024-2</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockOptionsPlan20251Member" xlink:label="iva_StockOptionsPlan20251Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockOptionsPlan20251Member" xlink:to="iva_StockOptionsPlan20251Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockOptionsPlan20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the stock option plan 'SO 2025-1'.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockOptionsPlan20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Options Plan 2025-1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_StockOptionsPlan20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">SO 2025-1</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockOptionsPlan20252Member" xlink:label="iva_StockOptionsPlan20252Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockOptionsPlan20252Member" xlink:to="iva_StockOptionsPlan20252Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockOptionsPlan20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the stock option plan 'SO 2025-2'.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockOptionsPlan20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Options Plan 2025-2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_StockOptionsPlan20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">SO 2025-2</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockOptionsPlan20253Member" xlink:label="iva_StockOptionsPlan20253Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockOptionsPlan20253Member" xlink:to="iva_StockOptionsPlan20253Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockOptionsPlan20253Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the stock option plan 'SO 2025-3'.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockOptionsPlan20253Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Options Plan 2025-3 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_StockOptionsPlan20253Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">SO 2025-3</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20231Ags20241AndAga20251Member" xlink:label="iva_Aga20231Ags20241AndAga20251Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20231Ags20241AndAga20251Member" xlink:to="iva_Aga20231Ags20241AndAga20251Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20231Ags20241AndAga20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2023-1, AGA 2024-1 and AGA 2025-1.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20231Ags20241AndAga20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 20231, AGS 20241 And AGA 20251 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20231Ags20241AndAga20251Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2023-1, AGS 2024-1 And AGA 2025-1</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="ifrs-full_CategoriesOfRelatedPartiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:to="ifrs-full_CategoriesOfRelatedPartiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfRelatedPartiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of related parties [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="ifrs-full_CategoriesOfRelatedPartiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:to="ifrs-full_CategoriesOfRelatedPartiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfRelatedPartiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of related parties [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FredericCrenMember" xlink:label="iva_FredericCrenMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FredericCrenMember" xlink:to="iva_FredericCrenMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FredericCrenMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Frederic Cren</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FredericCrenMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Frederic Cren [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FredericCrenMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Frederic Cren</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xlink:to="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of terms and conditions of share-based payment arrangement [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notes to the interim condensed consolidated statement of financial position</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfPlansOutstanding" xlink:label="iva_NumberOfPlansOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfPlansOutstanding" xlink:to="iva_NumberOfPlansOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfPlansOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of plans outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfPlansOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of plans outstanding</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets" xlink:to="ifrs-full_ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from share-based payment transactions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from share-based payment transactions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based compensation expense</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ExpenseFromAmendmentOfShareBasedPaymentPlan" xlink:label="iva_ExpenseFromAmendmentOfShareBasedPaymentPlan" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ExpenseFromAmendmentOfShareBasedPaymentPlan" xlink:to="iva_ExpenseFromAmendmentOfShareBasedPaymentPlan_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ExpenseFromAmendmentOfShareBasedPaymentPlan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from amendment of share-based payment plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ExpenseFromAmendmentOfShareBasedPaymentPlan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from amendment of share-based payment plan</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:label="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:to="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of equity instruments granted</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of share options granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issued</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember" xlink:label="ifrs-full_BottomOfRangeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BottomOfRangeMember" xlink:to="ifrs-full_BottomOfRangeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BottomOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bottom of range [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BottomOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantAgreementWithEuropeanInvestmentBankMember" xlink:label="iva_WarrantAgreementWithEuropeanInvestmentBankMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantAgreementWithEuropeanInvestmentBankMember" xlink:to="iva_WarrantAgreementWithEuropeanInvestmentBankMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantAgreementWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to Warrant agreement with the European Investment Bank.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantAgreementWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrant Agreement With The European Investment Bank [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantAgreementWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrant agreement with the European Investment Bank</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember" xlink:label="iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember" xlink:to="iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to the LEGEND Phase IIa combination trial with lanifibranor and empagliflozin in patients with MASH/NASH and T2D</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">LEGEND Phase IIa combination trial with lanifibranor and empagliflozin in patients with MASH/NASH and T2D [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">LEGEND Phase IIa combination trial with lanifibranor and empagliflozin in patients with MASH/NASH and T2D</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_LegendPhaseIiaCombinationTrialWithLanifibranorAndEmpagliflozinInPatientsWithMashNashAndT2dMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">LEGEND Phase IIa combination trial with lanifibranor and empagliflozin in patients with MASH/NASH and T2D</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember" xlink:to="iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to first tranche of the finance contract with European Investment Bank ("EIB").</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance Contract With European Investment Bank, First Tranche [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance contract with EIB, first tranche (Tranche A)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_FinanceContractWithEuropeanInvestmentBankFirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB Tranche A 2022</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:label="ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:to="ifrs-full_CategoriesOfFinancialLiabilitiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfFinancialLiabilitiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of financial liabilities [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialLiabilitiesDomain" xlink:label="ifrs-full_CategoriesOfFinancialLiabilitiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfFinancialLiabilitiesDomain" xlink:to="ifrs-full_CategoriesOfFinancialLiabilitiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfFinancialLiabilitiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of financial liabilities [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtAmortisedCostMember" xlink:label="ifrs-full_FinancialLiabilitiesAtAmortisedCostMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialLiabilitiesAtAmortisedCostMember" xlink:to="ifrs-full_FinancialLiabilitiesAtAmortisedCostMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialLiabilitiesAtAmortisedCostMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities at amortised cost, class [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinancialLiabilitiesAtAmortisedCostMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities at amortized cost</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ClassOfWarrantOrRightMaturityTerm" xlink:label="iva_ClassOfWarrantOrRightMaturityTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ClassOfWarrantOrRightMaturityTerm" xlink:to="iva_ClassOfWarrantOrRightMaturityTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ClassOfWarrantOrRightMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity term of the warrants issued by the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ClassOfWarrantOrRightMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class Of Warrant Or Right, Maturity Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ClassOfWarrantOrRightMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity term of warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsTerm" xlink:label="iva_WarrantsTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsTerm" xlink:to="iva_WarrantsTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantsTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term of warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MaximumGrossProceedsReceivableUponExerciseOfWarrants" xlink:label="iva_MaximumGrossProceedsReceivableUponExerciseOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MaximumGrossProceedsReceivableUponExerciseOfWarrants" xlink:to="iva_MaximumGrossProceedsReceivableUponExerciseOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MaximumGrossProceedsReceivableUponExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The maximum gross proceeds from receivable upon exercise of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MaximumGrossProceedsReceivableUponExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum Gross Proceeds Receivable upon Exercise of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MaximumGrossProceedsReceivableUponExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum gross proceeds</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsInterestRate" xlink:label="ifrs-full_BorrowingsInterestRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BorrowingsInterestRate" xlink:to="ifrs-full_BorrowingsInterestRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BorrowingsInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, interest rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BorrowingsInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsDebtInstrumentTerm" xlink:label="iva_IfrsDebtInstrumentTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsDebtInstrumentTerm" xlink:to="iva_IfrsDebtInstrumentTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsDebtInstrumentTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsDebtInstrumentTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Debt Instrument, Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsDebtInstrumentTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity term after the disbursement of the tranche</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TreatmentPeriodUnderStudy" xlink:label="iva_TreatmentPeriodUnderStudy" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TreatmentPeriodUnderStudy" xlink:to="iva_TreatmentPeriodUnderStudy_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TreatmentPeriodUnderStudy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Treatment period under study</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TreatmentPeriodUnderStudy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Treatment period under study</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TreatmentPeriodUnderStudy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Treatment period under study</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis" xlink:label="srt_StatementScenarioAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementScenarioAxis" xlink:to="srt_StatementScenarioAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_StatementScenarioAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Scenario [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="srt_ScenarioUnspecifiedDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioUnspecifiedDomain" xlink:to="srt_ScenarioUnspecifiedDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Scenario [Domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ScenarioOneMember" xlink:label="iva_ScenarioOneMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ScenarioOneMember" xlink:to="iva_ScenarioOneMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ScenarioOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for scenario one.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ScenarioOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Scenario One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ScenarioOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">First tranche</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ScenarioTwoMember" xlink:label="iva_ScenarioTwoMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ScenarioTwoMember" xlink:to="iva_ScenarioTwoMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ScenarioTwoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for scenario two.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ScenarioTwoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Scenario Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ScenarioTwoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Second tranche</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ScenarioThreeMember" xlink:label="iva_ScenarioThreeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ScenarioThreeMember" xlink:to="iva_ScenarioThreeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ScenarioThreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for scenario three.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ScenarioThreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Scenario Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_ScenarioThreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Scenario Three</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfTranches" xlink:label="iva_NumberOfTranches" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfTranches" xlink:to="iva_NumberOfTranches_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfTranches_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to  number of tranches.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfTranches_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Tranches</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfTranches_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MinimumGrossFundingToBeRaised" xlink:label="iva_MinimumGrossFundingToBeRaised" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MinimumGrossFundingToBeRaised" xlink:to="iva_MinimumGrossFundingToBeRaised_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MinimumGrossFundingToBeRaised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of minimum gross fund to be raised in fund raising.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MinimumGrossFundingToBeRaised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum Gross Funding To Be Raised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MinimumGrossFundingToBeRaised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum gross funding to be raised</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CollaborativeArrangementMilestonePaymentsReceived" xlink:label="iva_CollaborativeArrangementMilestonePaymentsReceived" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CollaborativeArrangementMilestonePaymentsReceived" xlink:to="iva_CollaborativeArrangementMilestonePaymentsReceived_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CollaborativeArrangementMilestonePaymentsReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the cash inflows from milestone payments in collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CollaborativeArrangementMilestonePaymentsReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collaborative Arrangement, Milestone Payments Received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CollaborativeArrangementMilestonePaymentsReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Milestone payments received</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfEqualTranches" xlink:label="iva_NumberOfEqualTranches" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfEqualTranches" xlink:to="iva_NumberOfEqualTranches_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfEqualTranches_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the information of number of equal tranches .</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfEqualTranches_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Equal Tranches</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfEqualTranches_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of equal tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MinimumAmountCommittedForFundRaising" xlink:label="iva_MinimumAmountCommittedForFundRaising" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MinimumAmountCommittedForFundRaising" xlink:to="iva_MinimumAmountCommittedForFundRaising_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MinimumAmountCommittedForFundRaising_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The minimum amount committed for borrowing under the agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MinimumAmountCommittedForFundRaising_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum Amount Committed For Fund Raising</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MinimumAmountCommittedForFundRaising_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum amount committed for fund raising</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PatientsTreatedWithLanifibranorMember" xlink:label="iva_PatientsTreatedWithLanifibranorMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PatientsTreatedWithLanifibranorMember" xlink:to="iva_PatientsTreatedWithLanifibranorMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PatientsTreatedWithLanifibranorMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents information of patients treated with lanifibranor</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PatientsTreatedWithLanifibranorMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patients Treated with Lanifibranor [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PatientsTreatedWithLanifibranorMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patients treated with lanifibranor</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PatientsTreatedWithLanifibranorInCombinationWithEmpagliflozinMember" xlink:label="iva_PatientsTreatedWithLanifibranorInCombinationWithEmpagliflozinMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PatientsTreatedWithLanifibranorInCombinationWithEmpagliflozinMember" xlink:to="iva_PatientsTreatedWithLanifibranorInCombinationWithEmpagliflozinMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PatientsTreatedWithLanifibranorInCombinationWithEmpagliflozinMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents the member of patients treated with lanifibranor in combination with empagliflozin</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PatientsTreatedWithLanifibranorInCombinationWithEmpagliflozinMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patients Treated With Lanifibranor in Combination With Empagliflozin [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PatientsTreatedWithLanifibranorInCombinationWithEmpagliflozinMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patients treated with lanifibranor in combination with empagliflozin</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PatientsTreatedWithPlaceboMember" xlink:label="iva_PatientsTreatedWithPlaceboMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PatientsTreatedWithPlaceboMember" xlink:to="iva_PatientsTreatedWithPlaceboMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PatientsTreatedWithPlaceboMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents patients treated with placebo.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PatientsTreatedWithPlaceboMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patients treated with placebo [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PatientsTreatedWithPlaceboMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patients treated with placebo</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PhaseIiClinicalTrialEvaluatingLanifibranorInPatientsWithT2dAndNonalcoholicFattyLiverDiseaseMember" xlink:label="iva_PhaseIiClinicalTrialEvaluatingLanifibranorInPatientsWithT2dAndNonalcoholicFattyLiverDiseaseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PhaseIiClinicalTrialEvaluatingLanifibranorInPatientsWithT2dAndNonalcoholicFattyLiverDiseaseMember" xlink:to="iva_PhaseIiClinicalTrialEvaluatingLanifibranorInPatientsWithT2dAndNonalcoholicFattyLiverDiseaseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PhaseIiClinicalTrialEvaluatingLanifibranorInPatientsWithT2dAndNonalcoholicFattyLiverDiseaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the Phase II clinical trial evaluating lanifibranor in patients with T2D and nonalcoholic fatty liver disease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PhaseIiClinicalTrialEvaluatingLanifibranorInPatientsWithT2dAndNonalcoholicFattyLiverDiseaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Phase II clinical trial evaluating lanifibranor in patients with T2D and nonalcoholic fatty liver disease [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PhaseIiClinicalTrialEvaluatingLanifibranorInPatientsWithT2dAndNonalcoholicFattyLiverDiseaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Phase II clinical trial evaluating lanifibranor in patients with T2D and nonalcoholic fatty liver disease</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DemonstratedReductionOfHepaticFatMeasuredByProtonMagneticResonanceSpectroscopy" xlink:label="iva_DemonstratedReductionOfHepaticFatMeasuredByProtonMagneticResonanceSpectroscopy" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DemonstratedReductionOfHepaticFatMeasuredByProtonMagneticResonanceSpectroscopy" xlink:to="iva_DemonstratedReductionOfHepaticFatMeasuredByProtonMagneticResonanceSpectroscopy_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DemonstratedReductionOfHepaticFatMeasuredByProtonMagneticResonanceSpectroscopy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Demonstrated reduction of hepatic fat measured by proton magnetic resonance spectroscopy</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DemonstratedReductionOfHepaticFatMeasuredByProtonMagneticResonanceSpectroscopy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Demonstrated reduction of hepatic fat measured by proton magnetic resonance spectroscopy</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_DemonstratedReductionOfHepaticFatMeasuredByProtonMagneticResonanceSpectroscopy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Demonstrated reduction of hepatic fat measured by proton magnetic resonance spectroscopy</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DurationOfClinicalTrial" xlink:label="iva_DurationOfClinicalTrial" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DurationOfClinicalTrial" xlink:to="iva_DurationOfClinicalTrial_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DurationOfClinicalTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Duration of clinical trial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DurationOfClinicalTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Duration of Clinical Trial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DurationOfClinicalTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Duration of clinical trial</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfLiverTriglycerideReductionAchievedInHigherProportionOfPatients" xlink:label="iva_PercentageOfLiverTriglycerideReductionAchievedInHigherProportionOfPatients" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfLiverTriglycerideReductionAchievedInHigherProportionOfPatients" xlink:to="iva_PercentageOfLiverTriglycerideReductionAchievedInHigherProportionOfPatients_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfLiverTriglycerideReductionAchievedInHigherProportionOfPatients_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of liver triglyceride reduction achieved in a higher proportion of patients.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfLiverTriglycerideReductionAchievedInHigherProportionOfPatients_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of liver triglyceride reduction achieved in a higher proportion of patients</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfLiverTriglycerideReductionAchievedInHigherProportionOfPatients_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of liver triglyceride reduction achieved in a higher proportion of patients</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfPatientsRandomizedClinicalTrialMainCohort" xlink:label="iva_NumberOfPatientsRandomizedClinicalTrialMainCohort" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfPatientsRandomizedClinicalTrialMainCohort" xlink:to="iva_NumberOfPatientsRandomizedClinicalTrialMainCohort_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfPatientsRandomizedClinicalTrialMainCohort_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the number of subjects randomized for main cohort.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfPatientsRandomizedClinicalTrialMainCohort_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Patients Randomized, Clinical Trial, Main Cohort</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfPatientsRandomizedClinicalTrialMainCohort_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of patients in main cohort</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DailyDoseOfLanifibranorInTrial" xlink:label="iva_DailyDoseOfLanifibranorInTrial" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DailyDoseOfLanifibranorInTrial" xlink:to="iva_DailyDoseOfLanifibranorInTrial_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DailyDoseOfLanifibranorInTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Daily dose of lanifibranor in trial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DailyDoseOfLanifibranorInTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Daily dose of lanifibranor in trial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DailyDoseOfLanifibranorInTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Daily dose of lanifibranor in trial</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DailyDoseOfEmpagliflozinInTrial" xlink:label="iva_DailyDoseOfEmpagliflozinInTrial" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DailyDoseOfEmpagliflozinInTrial" xlink:to="iva_DailyDoseOfEmpagliflozinInTrial_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DailyDoseOfEmpagliflozinInTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of daily dosage of empagliflozin in the trial.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DailyDoseOfEmpagliflozinInTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Daily Dose Of Empagliflozin In Trial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DailyDoseOfEmpagliflozinInTrial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Daily dose of empagliflozin in trial</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DemonstratedReductionOfHemoglobinInPatientsWithMashAndT2d" xlink:label="iva_DemonstratedReductionOfHemoglobinInPatientsWithMashAndT2d" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DemonstratedReductionOfHemoglobinInPatientsWithMashAndT2d" xlink:to="iva_DemonstratedReductionOfHemoglobinInPatientsWithMashAndT2d_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DemonstratedReductionOfHemoglobinInPatientsWithMashAndT2d_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The percentage of reduction in Hemoglobin among  patients with MASH and T2D.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DemonstratedReductionOfHemoglobinInPatientsWithMashAndT2d_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Demonstrated Reduction of Hemoglobin in Patients With MASH And T2D</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DemonstratedReductionOfHemoglobinInPatientsWithMashAndT2d_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage reduction in results on treatments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DemonstratedIncreaseOfHemoglobinInPatientsWithMashAndT2d" xlink:label="iva_DemonstratedIncreaseOfHemoglobinInPatientsWithMashAndT2d" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DemonstratedIncreaseOfHemoglobinInPatientsWithMashAndT2d" xlink:to="iva_DemonstratedIncreaseOfHemoglobinInPatientsWithMashAndT2d_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DemonstratedIncreaseOfHemoglobinInPatientsWithMashAndT2d_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The percentage of increase of Hemoglobin in patients with MASH and T2D.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DemonstratedIncreaseOfHemoglobinInPatientsWithMashAndT2d_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Demonstrated Increase of Hemoglobin in Patients With MASH And T2D</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DemonstratedIncreaseOfHemoglobinInPatientsWithMashAndT2d_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of increase observed in the placebo arm</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DemonstratedReductionOfHepaticSteatosisMeasuredByMriPdff" xlink:label="iva_DemonstratedReductionOfHepaticSteatosisMeasuredByMriPdff" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DemonstratedReductionOfHepaticSteatosisMeasuredByMriPdff" xlink:to="iva_DemonstratedReductionOfHepaticSteatosisMeasuredByMriPdff_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DemonstratedReductionOfHepaticSteatosisMeasuredByMriPdff_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The percentage of reduction in Hepatic Steatosis measured by MRI-PDFF.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DemonstratedReductionOfHepaticSteatosisMeasuredByMriPdff_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Demonstrated Reduction Of Hepatic Steatosis Measured By MRI-PDFF</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DemonstratedReductionOfHepaticSteatosisMeasuredByMriPdff_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reduction in hepatic steatosis (in percent)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfPatientsTreatedInTrialShowingSignificantReductionInHepaticFat" xlink:label="iva_PercentageOfPatientsTreatedInTrialShowingSignificantReductionInHepaticFat" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfPatientsTreatedInTrialShowingSignificantReductionInHepaticFat" xlink:to="iva_PercentageOfPatientsTreatedInTrialShowingSignificantReductionInHepaticFat_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfPatientsTreatedInTrialShowingSignificantReductionInHepaticFat_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients treated in trial showing significant reduction in hepatic fat.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfPatientsTreatedInTrialShowingSignificantReductionInHepaticFat_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Patients Treated In Trial Showing Significant Reduction In Hepatic Fat</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfPatientsTreatedInTrialShowingSignificantReductionInHepaticFat_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients showing significant reduction in hepatic fat</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DemonstratedSignificantRelativeReductionInVatSatRatioInPatients" xlink:label="iva_DemonstratedSignificantRelativeReductionInVatSatRatioInPatients" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DemonstratedSignificantRelativeReductionInVatSatRatioInPatients" xlink:to="iva_DemonstratedSignificantRelativeReductionInVatSatRatioInPatients_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DemonstratedSignificantRelativeReductionInVatSatRatioInPatients_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The percentage of significant relative reduction in VAT / SAT ratio in patients.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DemonstratedSignificantRelativeReductionInVatSatRatioInPatients_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Demonstrated Significant Relative Reduction in VAT/SAT Ratio in Patients</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DemonstratedSignificantRelativeReductionInVatSatRatioInPatients_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Significant relative reduction in VAT/SAT ratio (in percent)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfPatientsSawTheirHemoglobinLevelsBelowSpecifiedPercentageMentioned" xlink:label="iva_PercentageOfPatientsSawTheirHemoglobinLevelsBelowSpecifiedPercentageMentioned" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfPatientsSawTheirHemoglobinLevelsBelowSpecifiedPercentageMentioned" xlink:to="iva_PercentageOfPatientsSawTheirHemoglobinLevelsBelowSpecifiedPercentageMentioned_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfPatientsSawTheirHemoglobinLevelsBelowSpecifiedPercentageMentioned_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the percentage of patients saw their HbA1c levels below specific percentage mentioned.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfPatientsSawTheirHemoglobinLevelsBelowSpecifiedPercentageMentioned_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of Patients Saw Their Hemoglobin Levels Below Specified Percentage Mentioned</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfPatientsSawTheirHemoglobinLevelsBelowSpecifiedPercentageMentioned_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients hemoglobin levels</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SpecificPercentageOfHemoglobinLevel" xlink:label="iva_SpecificPercentageOfHemoglobinLevel" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SpecificPercentageOfHemoglobinLevel" xlink:to="iva_SpecificPercentageOfHemoglobinLevel_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SpecificPercentageOfHemoglobinLevel_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the specific percentage of Hemoglobin levels presented.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SpecificPercentageOfHemoglobinLevel_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Specific Percentage of Hemoglobin Level</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SpecificPercentageOfHemoglobinLevel_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Specific percentage of hemoglobin level</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfPatientsOnLanifibranorAlone" xlink:label="iva_PercentageOfPatientsOnLanifibranorAlone" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfPatientsOnLanifibranorAlone" xlink:to="iva_PercentageOfPatientsOnLanifibranorAlone_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfPatientsOnLanifibranorAlone_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the percentage of patients on lanifibranor alone.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfPatientsOnLanifibranorAlone_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Patients On Lanifibranor Alone</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfPatientsOnLanifibranorAlone_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients On lanifibranor alone</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfPatientsOnCombinationTherapy" xlink:label="iva_PercentageOfPatientsOnCombinationTherapy" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfPatientsOnCombinationTherapy" xlink:to="iva_PercentageOfPatientsOnCombinationTherapy_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfPatientsOnCombinationTherapy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the percentage of patients in combination therapy.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfPatientsOnCombinationTherapy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Patients On Combination Therapy</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfPatientsOnCombinationTherapy_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients On combination therapy</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfReductionOfPlaceboGroup" xlink:label="iva_PercentageOfReductionOfPlaceboGroup" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfReductionOfPlaceboGroup" xlink:to="iva_PercentageOfReductionOfPlaceboGroup_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfReductionOfPlaceboGroup_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the percentage of reduction in placebo group.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfReductionOfPlaceboGroup_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Reduction Of Placebo Group</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfReductionOfPlaceboGroup_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reduction of placebo group</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:to="ifrs-full_SignificantInvestmentsInAssociatesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Associates [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantInvestmentsInAssociatesDomain" xlink:to="ifrs-full_SignificantInvestmentsInAssociatesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Associates [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_HepalysPharmaIncMember" xlink:label="iva_HepalysPharmaIncMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_HepalysPharmaIncMember" xlink:to="iva_HepalysPharmaIncMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_HepalysPharmaIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Hepalys Pharma, Inc.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_HepalysPharmaIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Hepalys Pharma, Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_HepalysPharmaIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Hepalys Pharma, Inc</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis" xlink:label="srt_StatementGeographicalAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_StatementGeographicalAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Geographical [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain" xlink:label="srt_SegmentGeographicalDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_SegmentGeographicalDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Geographical [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_KR" xlink:label="country_KR" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_KR" xlink:to="country_KR_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_KR_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">KOREA, REPUBLIC OF</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_KR_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">South Korea</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CatalysOptionAgreementMember" xlink:label="iva_CatalysOptionAgreementMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CatalysOptionAgreementMember" xlink:to="iva_CatalysOptionAgreementMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CatalysOptionAgreementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Catalys Option Agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CatalysOptionAgreementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Catalys Option Agreement [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CatalysOptionAgreementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Catalys Option Agreement</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OptionToAcquireSharesInCompanyPercentage" xlink:label="iva_OptionToAcquireSharesInCompanyPercentage" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OptionToAcquireSharesInCompanyPercentage" xlink:to="iva_OptionToAcquireSharesInCompanyPercentage_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OptionToAcquireSharesInCompanyPercentage_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Option to acquire shares in company, percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OptionToAcquireSharesInCompanyPercentage_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Option to acquire shares in company, percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_OptionToAcquireSharesInCompanyPercentage_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Option to acquire shares in company, percentage</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementUpfrontFeeReceivable" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementUpfrontFeeReceivable" xlink:to="iva_LicenseAndCollaborationAgreementUpfrontFeeReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of upfront fee receivable by the entity, pursuant to licensing and collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement Upfront Fee Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Upfront payment receivable</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfPopulationSufferingFromNash" xlink:label="iva_PercentageOfPopulationSufferingFromNash" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfPopulationSufferingFromNash" xlink:to="iva_PercentageOfPopulationSufferingFromNash_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfPopulationSufferingFromNash_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of population suffering from NASH</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfPopulationSufferingFromNash_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of population suffering from NASH</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfPopulationSufferingFromNash_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of population suffering from NASH</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfPatientsWithSignificantFibrosis" xlink:label="iva_PercentageOfPatientsWithSignificantFibrosis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfPatientsWithSignificantFibrosis" xlink:to="iva_PercentageOfPatientsWithSignificantFibrosis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfPatientsWithSignificantFibrosis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients with significant fibrosis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfPatientsWithSignificantFibrosis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients with significant fibrosis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfPatientsWithSignificantFibrosis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of patients with significant fibrosis</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementRevenueFromUpfrontPayments" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromUpfrontPayments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementRevenueFromUpfrontPayments" xlink:to="iva_LicenseAndCollaborationAgreementRevenueFromUpfrontPayments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromUpfrontPayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License and Collaboration Agreement, revenue from upfront payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromUpfrontPayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License and Collaboration Agreement, revenue from upfront payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromUpfrontPayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue from upfront payments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementRevenueFromRecognitionOfFairValueOfSharesAcquired" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromRecognitionOfFairValueOfSharesAcquired" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementRevenueFromRecognitionOfFairValueOfSharesAcquired" xlink:to="iva_LicenseAndCollaborationAgreementRevenueFromRecognitionOfFairValueOfSharesAcquired_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromRecognitionOfFairValueOfSharesAcquired_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License and Collaboration Agreement, revenue from recognition of fair value of shares acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromRecognitionOfFairValueOfSharesAcquired_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License and Collaboration Agreement, revenue from recognition of fair value of shares acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementRevenueFromRecognitionOfFairValueOfSharesAcquired_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue from recognition of fair value of shares acquired</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSharesAcquiredInAssociate" xlink:label="iva_NumberOfSharesAcquiredInAssociate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSharesAcquiredInAssociate" xlink:to="iva_NumberOfSharesAcquiredInAssociate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSharesAcquiredInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares acquired in associate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSharesAcquiredInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares acquired in associate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfSharesAcquiredInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares acquired in associate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethodPricePerShare" xlink:label="iva_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethodPricePerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethodPricePerShare" xlink:to="iva_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethodPricePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethodPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchase of interests in investments accounted for using equity method, price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethodPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchase of interests in investments accounted for using equity method, price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethodPricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchase of interests in investments accounted for using equity method, price per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInAssociate" xlink:label="ifrs-full_ProportionOfOwnershipInterestInAssociate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProportionOfOwnershipInterestInAssociate" xlink:to="ifrs-full_ProportionOfOwnershipInterestInAssociate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProportionOfOwnershipInterestInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proportion of ownership interest in associate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProportionOfOwnershipInterestInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Group's share in %</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ProportionOfOwnershipInterestInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proportion of ownership interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of subsidiaries [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:to="ifrs-full_SignificantInvestmentsInSubsidiariesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidiaries [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:to="ifrs-full_SignificantInvestmentsInSubsidiariesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidiaries [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_InventivaIncMember" xlink:label="iva_InventivaIncMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_InventivaIncMember" xlink:to="iva_InventivaIncMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_InventivaIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Inventiva Inc, U.S. affiliate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_InventivaIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventiva Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_InventivaIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventiva Inc.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of subsidiaries [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basis of preparation and statement of compliance</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfEntitiesBeingConsolidated" xlink:label="iva_NumberOfEntitiesBeingConsolidated" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfEntitiesBeingConsolidated" xlink:to="iva_NumberOfEntitiesBeingConsolidated_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfEntitiesBeingConsolidated_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of entities being consolidated</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfEntitiesBeingConsolidated_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of entities being consolidated</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfEntitiesBeingConsolidated_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of entities being consolidated</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:label="ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:to="ifrs-full_ProportionOfOwnershipInterestInSubsidiary_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProportionOfOwnershipInterestInSubsidiary_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proportion of ownership interest in subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProportionOfOwnershipInterestInSubsidiary_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percent of ownership interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterests" xlink:label="ifrs-full_NoncontrollingInterests" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncontrollingInterests" xlink:to="ifrs-full_NoncontrollingInterests_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncontrollingInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-controlling interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncontrollingInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-controlling interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ForeignExchangeRatesAbstract" xlink:label="ifrs-full_ForeignExchangeRatesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ForeignExchangeRatesAbstract" xlink:to="ifrs-full_ForeignExchangeRatesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ForeignExchangeRatesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange rates [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ForeignExchangeRatesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency translation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AverageForeignExchangeRate" xlink:label="ifrs-full_AverageForeignExchangeRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AverageForeignExchangeRate" xlink:to="ifrs-full_AverageForeignExchangeRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AverageForeignExchangeRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average foreign exchange rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AverageForeignExchangeRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average exchange rate for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about property, plant and equipment [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:to="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of property, plant and equipment [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:to="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of property, plant and equipment [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BuildingsMember" xlink:label="ifrs-full_BuildingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BuildingsMember" xlink:to="ifrs-full_BuildingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BuildingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Buildings [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BuildingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Buildings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FixturesAndFittingsMember" xlink:label="ifrs-full_FixturesAndFittingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FixturesAndFittingsMember" xlink:to="ifrs-full_FixturesAndFittingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FixturesAndFittingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fixtures and fittings [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FixturesAndFittingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fixtures and fittings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetworkInfrastructureMember" xlink:label="ifrs-full_NetworkInfrastructureMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NetworkInfrastructureMember" xlink:to="ifrs-full_NetworkInfrastructureMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NetworkInfrastructureMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Network infrastructure [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NetworkInfrastructureMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Technical facilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EquipmentAndToolingMember" xlink:label="iva_EquipmentAndToolingMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EquipmentAndToolingMember" xlink:to="iva_EquipmentAndToolingMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EquipmentAndToolingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for equipment and tooling.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EquipmentAndToolingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equipment and tooling</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_GeneralFacilitiesMiscellaneousFixturesAndFittingsMember" xlink:label="iva_GeneralFacilitiesMiscellaneousFixturesAndFittingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_GeneralFacilitiesMiscellaneousFixturesAndFittingsMember" xlink:to="iva_GeneralFacilitiesMiscellaneousFixturesAndFittingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_GeneralFacilitiesMiscellaneousFixturesAndFittingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for general facilities, miscellaneous fixtures and fittings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_GeneralFacilitiesMiscellaneousFixturesAndFittingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General facilities, miscellaneous fixtures and fittings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OfficeEquipmentMember" xlink:label="ifrs-full_OfficeEquipmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OfficeEquipmentMember" xlink:to="ifrs-full_OfficeEquipmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OfficeEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Office equipment [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OfficeEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Office equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComputerEquipmentMember" xlink:label="ifrs-full_ComputerEquipmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ComputerEquipmentMember" xlink:to="ifrs-full_ComputerEquipmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ComputerEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Computer equipment [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ComputerEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IT equipment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FurnitureMember" xlink:label="iva_FurnitureMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FurnitureMember" xlink:to="iva_FurnitureMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FurnitureMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for furniture.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FurnitureMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Furniture</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about property, plant and equipment [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accounting principles</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, plant and equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment" xlink:label="ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment" xlink:to="ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Useful life measured as period of time, property, plant and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Useful lives of property, plant and equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialLiabilitiesTable" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialLiabilitiesTable" xlink:to="ifrs-full_DisclosureOfFinancialLiabilitiesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial liabilities [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xlink:to="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities at fair value through profit or loss, category [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities carried at fair value through profit or loss</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialLiabilitiesLineItems" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialLiabilitiesLineItems" xlink:to="ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial liabilities [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accounting principles</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFairValueOfDerivativeFinancialLiability" xlink:label="iva_IncreaseDecreaseInFairValueOfDerivativeFinancialLiability" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFairValueOfDerivativeFinancialLiability" xlink:to="iva_IncreaseDecreaseInFairValueOfDerivativeFinancialLiability_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFairValueOfDerivativeFinancialLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in the fair value of a derivative financial liability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFairValueOfDerivativeFinancialLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Fair Value of Derivative Financial Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInFairValueOfDerivativeFinancialLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in fair Value of derivative</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:to="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about borrowings [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems" xlink:to="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about borrowings [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Guarantee Details</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt, Derivatives and Royalty certificates liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about financial instruments [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:to="ifrs-full_LevelsOfFairValueHierarchyAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Levels of fair value hierarchy [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:label="ifrs-full_LevelsOfFairValueHierarchyDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:to="ifrs-full_LevelsOfFairValueHierarchyDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LevelsOfFairValueHierarchyDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Levels of fair value hierarchy [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level3OfFairValueHierarchyMember" xlink:label="ifrs-full_Level3OfFairValueHierarchyMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Level3OfFairValueHierarchyMember" xlink:to="ifrs-full_Level3OfFairValueHierarchyMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Level3OfFairValueHierarchyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level 3 of fair value hierarchy [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Level3OfFairValueHierarchyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level 3</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LongTermFinancialDebtDerivativesMember" xlink:label="iva_LongTermFinancialDebtDerivativesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LongTermFinancialDebtDerivativesMember" xlink:to="iva_LongTermFinancialDebtDerivativesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LongTermFinancialDebtDerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Long-term financial debt, derivatives.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LongTermFinancialDebtDerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term financial debt - derivatives [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LongTermFinancialDebtDerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term financial debt - derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_LongTermFinancialDebtDerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivatives</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ShortTermFinancialDebtDerivativesMember" xlink:label="iva_ShortTermFinancialDebtDerivativesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ShortTermFinancialDebtDerivativesMember" xlink:to="iva_ShortTermFinancialDebtDerivativesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ShortTermFinancialDebtDerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for short-term financial debt, derivatives.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ShortTermFinancialDebtDerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short Term Financial Debt Derivatives [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ShortTermFinancialDebtDerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shortterm financial debt - derivatives</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about financial instruments [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency forwards contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets and liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilities" xlink:label="ifrs-full_FinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialLiabilities" xlink:to="ifrs-full_FinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountOfExpensesDenominatedInForeignCurrency" xlink:label="iva_AmountOfExpensesDenominatedInForeignCurrency" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountOfExpensesDenominatedInForeignCurrency" xlink:to="iva_AmountOfExpensesDenominatedInForeignCurrency_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountOfExpensesDenominatedInForeignCurrency_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of expenses denominated in foreign currency.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountOfExpensesDenominatedInForeignCurrency_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of expenses denominated in foreign currency</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AmountOfExpensesDenominatedInForeignCurrency_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of expenses in a foreign currency</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PurchasesInForeignCurrencyAsPercentageOfOperatingExpenses" xlink:label="iva_PurchasesInForeignCurrencyAsPercentageOfOperatingExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PurchasesInForeignCurrencyAsPercentageOfOperatingExpenses" xlink:to="iva_PurchasesInForeignCurrencyAsPercentageOfOperatingExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PurchasesInForeignCurrencyAsPercentageOfOperatingExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The percentage amount of operating expenses that were paid in a currency other than the reporting currency.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PurchasesInForeignCurrencyAsPercentageOfOperatingExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchases In Foreign Currency As A Percentage Of Operating Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PurchasesInForeignCurrencyAsPercentageOfOperatingExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency expenses as a percentage of operating expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsNumberOfOperatingSegments" xlink:label="iva_IfrsNumberOfOperatingSegments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsNumberOfOperatingSegments" xlink:to="iva_IfrsNumberOfOperatingSegments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsNumberOfOperatingSegments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsNumberOfOperatingSegments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of operating segments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsNumberOfOperatingSegments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of operating segments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasTable" xlink:label="ifrs-full_DisclosureOfGeographicalAreasTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfGeographicalAreasTable" xlink:to="ifrs-full_DisclosureOfGeographicalAreasTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfGeographicalAreasTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of geographical areas [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_FR" xlink:label="country_FR" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_FR" xlink:to="country_FR_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_FR_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">FRANCE</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_FR_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">France</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US" xlink:label="country_US" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_US_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">UNITED STATES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="country_US_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">USA</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CN" xlink:label="country_CN" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_CN" xlink:to="country_CN_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_CN_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CHINA</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_CN_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">China</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:label="ifrs-full_DisclosureOfGeographicalAreasLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:to="ifrs-full_DisclosureOfGeographicalAreasLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfGeographicalAreasLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of geographical areas [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfGeographicalAreasLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Geographical split</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_GoingConcernTable" xlink:label="iva_GoingConcernTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_GoingConcernTable" xlink:to="iva_GoingConcernTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_GoingConcernTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule disclosing information related to going concern.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_GoingConcernTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Going Concern [Table]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_GoingConcernLineItems" xlink:label="iva_GoingConcernLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_GoingConcernLineItems" xlink:to="iva_GoingConcernLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_GoingConcernLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_GoingConcernLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Going Concern [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_GoingConcernLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Going Concern</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents" xlink:label="ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents" xlink:to="ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term deposits, not classified as cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term deposit accounts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about intangible assets [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xlink:label="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xlink:to="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of intangible assets other than goodwill [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain" xlink:label="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain" xlink:to="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of intangible assets other than goodwill [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LibraryOfCompoundsMember" xlink:label="iva_LibraryOfCompoundsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LibraryOfCompoundsMember" xlink:to="iva_LibraryOfCompoundsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LibraryOfCompoundsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for library of compounds.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LibraryOfCompoundsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Library of compounds</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComputerSoftwareMember" xlink:label="ifrs-full_ComputerSoftwareMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ComputerSoftwareMember" xlink:to="ifrs-full_ComputerSoftwareMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ComputerSoftwareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Computer software [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ComputerSoftwareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Software licenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IntangibleAssetsUnderDevelopmentMember" xlink:label="ifrs-full_IntangibleAssetsUnderDevelopmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IntangibleAssetsUnderDevelopmentMember" xlink:to="ifrs-full_IntangibleAssetsUnderDevelopmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IntangibleAssetsUnderDevelopmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets under development [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IntangibleAssetsUnderDevelopmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets in progress</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:label="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:to="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="ifrs-full_CarryingAmountMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CarryingAmountMember" xlink:to="ifrs-full_CarryingAmountMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying amount [member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember" xlink:label="ifrs-full_GrossCarryingAmountMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GrossCarryingAmountMember" xlink:to="ifrs-full_GrossCarryingAmountMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GrossCarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross carrying amount [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_GrossCarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Laboratory inventories</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_GrossCarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember" xlink:label="ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember" xlink:to="ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated depreciation, amortisation and impairment [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortization and impairment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation and impairment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about intangible assets [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible Assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract" xlink:label="ifrs-full_ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract" xlink:to="ifrs-full_ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reconciliation of changes in intangible assets other than goodwill [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreasesInIntangibleAssetsOtherThanGoodwill" xlink:label="iva_IncreasesInIntangibleAssetsOtherThanGoodwill" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreasesInIntangibleAssetsOtherThanGoodwill" xlink:to="iva_IncreasesInIntangibleAssetsOtherThanGoodwill_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreasesInIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increases to intangible assets other than goodwill.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreasesInIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increases in intangible assets other than goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreasesInIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increases</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DecreasesInIntangibleAssetsOtherThanGoodwill" xlink:label="iva_DecreasesInIntangibleAssetsOtherThanGoodwill" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DecreasesInIntangibleAssetsOtherThanGoodwill" xlink:to="iva_DecreasesInIntangibleAssetsOtherThanGoodwill_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DecreasesInIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of decreases to intangible assets other than goodwill.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DecreasesInIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decreases in intangible assets other than goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_DecreasesInIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decreases</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:to="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions other than through business combinations, intangible assets other than goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets acquired</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NotesToInterimCondensedConsolidatedStatementOfFinancialPositionAbstract" xlink:label="iva_NotesToInterimCondensedConsolidatedStatementOfFinancialPositionAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NotesToInterimCondensedConsolidatedStatementOfFinancialPositionAbstract" xlink:to="iva_NotesToInterimCondensedConsolidatedStatementOfFinancialPositionAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NotesToInterimCondensedConsolidatedStatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NotesToInterimCondensedConsolidatedStatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LandMember" xlink:label="ifrs-full_LandMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LandMember" xlink:to="ifrs-full_LandMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LandMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Land [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LandMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Land</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CommunicationAndNetworkEquipmentMember" xlink:label="ifrs-full_CommunicationAndNetworkEquipmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CommunicationAndNetworkEquipmentMember" xlink:to="ifrs-full_CommunicationAndNetworkEquipmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CommunicationAndNetworkEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Communication and network equipment [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CommunicationAndNetworkEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Technical facilities, equipment and tooling</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherPropertyPlantAndEquipmentMember" xlink:label="ifrs-full_OtherPropertyPlantAndEquipmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherPropertyPlantAndEquipmentMember" xlink:to="ifrs-full_OtherPropertyPlantAndEquipmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherPropertyPlantAndEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other property, plant and equipment [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherPropertyPlantAndEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other property, plant and equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConstructionInProgressMember" xlink:label="ifrs-full_ConstructionInProgressMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ConstructionInProgressMember" xlink:to="ifrs-full_ConstructionInProgressMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ConstructionInProgressMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Construction in progress [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ConstructionInProgressMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, plant and equipment in progress</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssetsMember" xlink:label="ifrs-full_RightofuseAssetsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RightofuseAssetsMember" xlink:to="ifrs-full_RightofuseAssetsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RightofuseAssetsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Right-of-use assets [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RightofuseAssetsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Right of use</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xlink:label="ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xlink:to="ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reconciliation of changes in property, plant and equipment [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reconciliation of changes in property, plant and equipment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreasesInPropertyPlantAndEquipment" xlink:label="iva_IncreasesInPropertyPlantAndEquipment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreasesInPropertyPlantAndEquipment" xlink:to="iva_IncreasesInPropertyPlantAndEquipment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreasesInPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increases in property, plant and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreasesInPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increases in property, plant and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreasesInPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increases</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DecreasesInPropertyPlantAndEquipment" xlink:label="iva_DecreasesInPropertyPlantAndEquipment" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DecreasesInPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of decreases in property, plant and equipment</label>
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipmentIncludingRightofuseAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:to="ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through other changes, property, plant and equipment including right-of-use assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Others</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FibroscanMachinesMember" xlink:label="iva_FibroscanMachinesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FibroscanMachinesMember" xlink:to="iva_FibroscanMachinesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FibroscanMachinesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for fibroscan machines.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FibroscanMachinesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fibroscan machines</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FibroscanMachinesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fibroscan machines</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PropertyPlantAndEquipmentUsedInResearchAndDevelopmentActivitiesMember" xlink:label="iva_PropertyPlantAndEquipmentUsedInResearchAndDevelopmentActivitiesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PropertyPlantAndEquipmentUsedInResearchAndDevelopmentActivitiesMember" xlink:to="iva_PropertyPlantAndEquipmentUsedInResearchAndDevelopmentActivitiesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PropertyPlantAndEquipmentUsedInResearchAndDevelopmentActivitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents property, plant and equipment used in research and development activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PropertyPlantAndEquipmentUsedInResearchAndDevelopmentActivitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, plant and equipment used in research and development activities [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PropertyPlantAndEquipmentUsedInResearchAndDevelopmentActivitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, plant and equipment used in research and development activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipmentIncludingRightofuseAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions other than through business combinations, property, plant and equipment including right-of-use assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions other than through business combinations, property, plant and equipment including right-of-use assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:label="ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:to="ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disposals, property, plant and equipment including right-of-use assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationRightofuseAssets" xlink:label="ifrs-full_DepreciationRightofuseAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DepreciationRightofuseAssets" xlink:to="ifrs-full_DepreciationRightofuseAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DepreciationRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation, right-of-use assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DepreciationRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xlink:label="ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xlink:to="ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impairment loss recognised in profit or loss, right-of-use assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impairment loss on right of use assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:label="ifrs-full_IncreaseDecreaseInPropertyPlantAndEquipmentIncludingRightofuseAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:to="ifrs-full_IncreaseDecreaseInPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInPropertyPlantAndEquipmentIncludingRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in property, plant and equipment including right-of-use assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalsPropertyPlantAndEquipment" xlink:label="ifrs-full_DisposalsPropertyPlantAndEquipment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisposalsPropertyPlantAndEquipment" xlink:to="ifrs-full_DisposalsPropertyPlantAndEquipment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisposalsPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disposals, property, plant and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisposalsPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated depreciation on the disposed technical facilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:to="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of temporary difference, unused tax losses and unused tax credits [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:label="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:to="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary difference, unused tax losses and unused tax credits [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain" xlink:label="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain" xlink:to="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary difference, unused tax losses and unused tax credits [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnusedTaxCreditsMember" xlink:label="ifrs-full_UnusedTaxCreditsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnusedTaxCreditsMember" xlink:to="ifrs-full_UnusedTaxCreditsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnusedTaxCreditsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unused tax credits [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_UnusedTaxCreditsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax credits</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:to="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of temporary difference, unused tax losses and unused tax credits [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax asset</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnusedTaxLossesMember" xlink:label="ifrs-full_UnusedTaxLossesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnusedTaxLossesMember" xlink:to="ifrs-full_UnusedTaxLossesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnusedTaxLossesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unused tax losses [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_UnusedTaxLossesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax losses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Legal Entity [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">All Entities [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised" xlink:label="ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unused tax losses for which no deferred tax asset recognised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unrecognized Deferred tax assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of associates [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investments accounted for using the equity method</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:label="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retrospective application and retrospective restatement [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestatedMember" xlink:label="ifrs-full_RestatedMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RestatedMember" xlink:to="ifrs-full_RestatedMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RestatedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Currently stated [member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PreviouslyStatedMember" xlink:label="ifrs-full_PreviouslyStatedMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PreviouslyStatedMember" xlink:to="ifrs-full_PreviouslyStatedMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PreviouslyStatedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Previously stated [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_PreviouslyStatedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Previously stated</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NonCurrentAssetsExcludingDeferredAssets" xlink:label="iva_NonCurrentAssetsExcludingDeferredAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NonCurrentAssetsExcludingDeferredAssets" xlink:to="iva_NonCurrentAssetsExcludingDeferredAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NonCurrentAssetsExcludingDeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current assets excluding deferred assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NonCurrentAssetsExcludingDeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current assets excluding deferred assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="iva_NonCurrentAssetsExcludingDeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total non-current assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CurrentAssetsExcludingDeferredAssets" xlink:label="iva_CurrentAssetsExcludingDeferredAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CurrentAssetsExcludingDeferredAssets" xlink:to="iva_CurrentAssetsExcludingDeferredAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CurrentAssetsExcludingDeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current assets excluding deferred assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CurrentAssetsExcludingDeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current assets excluding deferred assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="iva_CurrentAssetsExcludingDeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DeferredAssets" xlink:label="iva_DeferredAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DeferredAssets" xlink:to="iva_DeferredAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DeferredAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CapitalReserve" xlink:label="ifrs-full_CapitalReserve" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CapitalReserve" xlink:to="ifrs-full_CapitalReserve_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CapitalReserve_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital reserve</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CapitalReserve_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital reserve</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CapitalSurplusOthers" xlink:label="iva_CapitalSurplusOthers" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CapitalSurplusOthers" xlink:to="iva_CapitalSurplusOthers_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CapitalSurplusOthers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">A component of equity representing the capital surplus classified as others.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CapitalSurplusOthers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital Surplus, Others</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CapitalSurplusOthers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital surplus-others</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod" xlink:label="ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod" xlink:to="ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained earnings, excluding profit (loss) for reporting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">earnings brought forward</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TreasuryShares" xlink:label="ifrs-full_TreasuryShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TreasuryShares" xlink:to="ifrs-full_TreasuryShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TreasuryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Treasury shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_TreasuryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Treasury Shares</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseThroughCapitalVariations" xlink:label="iva_IncreaseDecreaseThroughCapitalVariations" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseThroughCapitalVariations" xlink:to="iva_IncreaseDecreaseThroughCapitalVariations_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseThroughCapitalVariations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through capital variations, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseThroughCapitalVariations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through capital variations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseThroughCapitalVariations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital variations</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EntitySShareOfNetAssetsInInvestmentsAccountedForUsingEquityMethod" xlink:label="iva_EntitySShareOfNetAssetsInInvestmentsAccountedForUsingEquityMethod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EntitySShareOfNetAssetsInInvestmentsAccountedForUsingEquityMethod" xlink:to="iva_EntitySShareOfNetAssetsInInvestmentsAccountedForUsingEquityMethod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EntitySShareOfNetAssetsInInvestmentsAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Entity's share of net assets in investments accounted for using the equity method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EntitySShareOfNetAssetsInInvestmentsAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Entity's share of net assets in investments accounted for using the equity method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_EntitySShareOfNetAssetsInInvestmentsAccountedForUsingEquityMethod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Group's share</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IntercompanyEliminationsInAssociates" xlink:label="iva_IntercompanyEliminationsInAssociates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IntercompanyEliminationsInAssociates" xlink:to="iva_IntercompanyEliminationsInAssociates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IntercompanyEliminationsInAssociates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of intercompany eliminations in associates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IntercompanyEliminationsInAssociates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intercompany Eliminations in Associates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_IntercompanyEliminationsInAssociates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Elimination of unrealized profit on downstream sales</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Goodwill" xlink:label="ifrs-full_Goodwill" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Goodwill" xlink:to="ifrs-full_Goodwill_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Goodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Goodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Goodwill</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherNonCurrentAssetsTable" xlink:label="iva_OtherNonCurrentAssetsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherNonCurrentAssetsTable" xlink:to="iva_OtherNonCurrentAssetsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherNonCurrentAssetsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule disclosing information related to other non-current assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherNonCurrentAssetsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Non Current Assets [Table]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherNonCurrentAssetsLineItems" xlink:label="iva_OtherNonCurrentAssetsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherNonCurrentAssetsLineItems" xlink:to="iva_OtherNonCurrentAssetsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherNonCurrentAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherNonCurrentAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Non Current Assets [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_OtherNonCurrentAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NonCurrentLongTermDepositsFromCustomers" xlink:label="iva_NonCurrentLongTermDepositsFromCustomers" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NonCurrentLongTermDepositsFromCustomers" xlink:to="iva_NonCurrentLongTermDepositsFromCustomers_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NonCurrentLongTermDepositsFromCustomers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents information about non current long term deposits from customers.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NonCurrentLongTermDepositsFromCustomers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non Current Long Term Deposits From Customers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NonCurrentLongTermDepositsFromCustomers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term deposit accounts</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NonCurrentAdvancesToSuppliers" xlink:label="iva_NonCurrentAdvancesToSuppliers" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NonCurrentAdvancesToSuppliers" xlink:to="iva_NonCurrentAdvancesToSuppliers_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NonCurrentAdvancesToSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount represents the non current advances of suppliers.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NonCurrentAdvancesToSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non Current Advances To Suppliers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NonCurrentAdvancesToSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Advance payments - non-current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_NonCurrentAdvancesToSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current advances to suppliers</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NonCurrentSecurityDeposits" xlink:label="iva_NonCurrentSecurityDeposits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NonCurrentSecurityDeposits" xlink:to="iva_NonCurrentSecurityDeposits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NonCurrentSecurityDeposits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The non-current amount of security deposits.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NonCurrentSecurityDeposits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current Security Deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NonCurrentSecurityDeposits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Security deposits</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember" xlink:label="iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember" xlink:to="iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Contract CRO with PRA.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract CRO With Pharmaceutical Research Associates B.V [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract CRO with Pharmaceutical Research Associates B.V.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_ContractCroWithPharmaceuticalResearchAssociatesB.vMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract CRO with Pharmaceutical Research Associates B.V.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis" xlink:label="ifrs-full_ClassesOfFinancialAssetsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialAssetsAxis" xlink:to="ifrs-full_ClassesOfFinancialAssetsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialAssetsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial assets [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain" xlink:label="ifrs-full_ClassesOfFinancialAssetsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialAssetsDomain" xlink:to="ifrs-full_ClassesOfFinancialAssetsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialAssetsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial assets [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LongTermDepositForwardContractMember" xlink:label="iva_LongTermDepositForwardContractMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LongTermDepositForwardContractMember" xlink:to="iva_LongTermDepositForwardContractMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LongTermDepositForwardContractMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for long-term deposit forward contract.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LongTermDepositForwardContractMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-Term Deposit Forward Contract [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LongTermDepositForwardContractMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term deposit forward contract</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LongTermDepositsClosed" xlink:label="iva_LongTermDepositsClosed" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LongTermDepositsClosed" xlink:to="iva_LongTermDepositsClosed_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LongTermDepositsClosed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of long-term deposits closed by the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LongTermDepositsClosed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term Deposits Closed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LongTermDepositsClosed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Closing long term deposit</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LongTermDepositsTerm" xlink:label="iva_LongTermDepositsTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LongTermDepositsTerm" xlink:to="iva_LongTermDepositsTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LongTermDepositsTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term of the long-term deposits of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LongTermDepositsTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-Term Deposits Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LongTermDepositsTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Period of long-term deposit</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ScheduleOfInventoryDisclosureTable" xlink:label="iva_ScheduleOfInventoryDisclosureTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ScheduleOfInventoryDisclosureTable" xlink:to="iva_ScheduleOfInventoryDisclosureTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ScheduleOfInventoryDisclosureTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule disclosing information related to inventories.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ScheduleOfInventoryDisclosureTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Inventory Disclosure [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedImpairmentMember" xlink:label="ifrs-full_AccumulatedImpairmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AccumulatedImpairmentMember" xlink:to="ifrs-full_AccumulatedImpairmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AccumulatedImpairmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated impairment [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AccumulatedImpairmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventories write-down</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ScheduleOfInventoryDisclosureLineItems" xlink:label="iva_ScheduleOfInventoryDisclosureLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ScheduleOfInventoryDisclosureLineItems" xlink:to="iva_ScheduleOfInventoryDisclosureLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ScheduleOfInventoryDisclosureLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ScheduleOfInventoryDisclosureLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of Inventory Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ScheduleOfInventoryDisclosureLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventories</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesTable" xlink:label="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesTable" xlink:to="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule disclosing information related to trade receivables and other current assets and receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade Receivables and Other Current Assets and Receivables [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityAxis" xlink:label="ifrs-full_MaturityAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_MaturityAxis" xlink:to="ifrs-full_MaturityAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_MaturityAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain" xlink:label="ifrs-full_MaturityDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_MaturityDomain" xlink:to="ifrs-full_MaturityDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_MaturityDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanThreeMonthsMember" xlink:label="ifrs-full_NotLaterThanThreeMonthsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NotLaterThanThreeMonthsMember" xlink:to="ifrs-full_NotLaterThanThreeMonthsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NotLaterThanThreeMonthsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Not later than three months [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NotLaterThanThreeMonthsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">3 months or less</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems" xlink:label="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems" xlink:to="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade Receivables and Other Current Assets and Receivables [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables, tax receivables and other current assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CurrentTradeReceivablesAveragePaymentPeriod" xlink:label="iva_CurrentTradeReceivablesAveragePaymentPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CurrentTradeReceivablesAveragePaymentPeriod" xlink:to="iva_CurrentTradeReceivablesAveragePaymentPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CurrentTradeReceivablesAveragePaymentPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the average payment period for trade receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CurrentTradeReceivablesAveragePaymentPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current Trade Receivables, Average Payment Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CurrentTradeReceivablesAveragePaymentPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average payment period for trade receivables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInTradeAndOtherCurrentReceivables" xlink:label="iva_IncreaseDecreaseInTradeAndOtherCurrentReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInTradeAndOtherCurrentReceivables" xlink:to="iva_IncreaseDecreaseInTradeAndOtherCurrentReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInTradeAndOtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in trade and other current receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInTradeAndOtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Trade and other current receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInTradeAndOtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in trade and other current receivables.</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CirAndOtherResearchTaxCreditsReceivable" xlink:label="iva_CirAndOtherResearchTaxCreditsReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CirAndOtherResearchTaxCreditsReceivable" xlink:to="iva_CirAndOtherResearchTaxCreditsReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CirAndOtherResearchTaxCreditsReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of CIR and other research tax credits receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CirAndOtherResearchTaxCreditsReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CIR and Other Research Tax Credits Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CirAndOtherResearchTaxCreditsReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CIR and other research tax credits</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherCurrentTaxReceivables" xlink:label="iva_OtherCurrentTaxReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherCurrentTaxReceivables" xlink:to="iva_OtherCurrentTaxReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherCurrentTaxReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of other tax receivables, classified as current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherCurrentTaxReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Current Tax Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherCurrentTaxReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentPrepaidExpenses" xlink:label="ifrs-full_CurrentPrepaidExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentPrepaidExpenses" xlink:to="ifrs-full_CurrentPrepaidExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentPrepaidExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current prepaid expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentPrepaidExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepaid expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets" xlink:label="ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets" xlink:to="ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current accrued income including current contract assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentAccruedIncomeIncludingCurrentContractAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current accrued income</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CashUnderLiquidityAgreementCurrent" xlink:label="iva_CashUnderLiquidityAgreementCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CashUnderLiquidityAgreementCurrent" xlink:to="iva_CashUnderLiquidityAgreementCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CashUnderLiquidityAgreementCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of cash under liquidity agreement, classified as current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CashUnderLiquidityAgreementCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash Under Liquidity Agreement, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CashUnderLiquidityAgreementCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liquidity agreement - Cash</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentValueAddedTaxReceivables" xlink:label="ifrs-full_CurrentValueAddedTaxReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentValueAddedTaxReceivables" xlink:to="ifrs-full_CurrentValueAddedTaxReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentValueAddedTaxReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current value added tax receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentValueAddedTaxReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">VAT receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentReceivables" xlink:label="ifrs-full_OtherCurrentReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherCurrentReceivables" xlink:to="ifrs-full_OtherCurrentReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other receivables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherCurrentAssetsAndReceivables" xlink:label="iva_OtherCurrentAssetsAndReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherCurrentAssetsAndReceivables" xlink:to="iva_OtherCurrentAssetsAndReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherCurrentAssetsAndReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of other current assets and receivables as of balance sheet date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherCurrentAssetsAndReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Current Assets And Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="iva_OtherCurrentAssetsAndReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets and receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis" xlink:label="srt_CurrencyAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CurrencyAxis" xlink:to="srt_CurrencyAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_CurrencyAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Currency [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain" xlink:label="currency_AllCurrenciesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="currency_AllCurrenciesDomain" xlink:to="currency_AllCurrenciesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="currency_AllCurrenciesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">All Currencies [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_EUR" xlink:label="currency_EUR" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="currency_EUR" xlink:to="currency_EUR_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="currency_EUR_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Euro Member Countries, Euro</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_USD" xlink:label="currency_USD" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="currency_USD" xlink:to="currency_USD_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="currency_USD_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">United States of America, Dollars</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="currency_USD_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">USD</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesAxis" xlink:label="ifrs-full_CounterpartiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CounterpartiesAxis" xlink:to="ifrs-full_CounterpartiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CounterpartiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Counterparties [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain" xlink:label="ifrs-full_CounterpartiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CounterpartiesDomain" xlink:to="ifrs-full_CounterpartiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CounterpartiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Counterparties [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CreditAgricoleBankMember" xlink:label="iva_CreditAgricoleBankMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CreditAgricoleBankMember" xlink:to="iva_CreditAgricoleBankMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CreditAgricoleBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Credit Agricole Bank.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CreditAgricoleBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Crdit Agricole bank</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CreditAgricoleBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Crdit Agricole bank</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SocieteGeneraleMember" xlink:label="iva_SocieteGeneraleMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SocieteGeneraleMember" xlink:to="iva_SocieteGeneraleMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SocieteGeneraleMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Societe Generale.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SocieteGeneraleMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Societe Generale</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CirReceivable" xlink:label="iva_CirReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CirReceivable" xlink:to="iva_CirReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CirReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CIR receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CirReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CIR receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CirReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CIR receivable</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsIncreaseDecreaseInPrepaidExpense" xlink:label="iva_IfrsIncreaseDecreaseInPrepaidExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsIncreaseDecreaseInPrepaidExpense" xlink:to="iva_IfrsIncreaseDecreaseInPrepaidExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsIncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsIncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Increase (Decrease) in Prepaid Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_IfrsIncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in prepaid expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdjustmentsForDecreaseIncreaseInShortTermDepositAccounts" xlink:label="iva_AdjustmentsForDecreaseIncreaseInShortTermDepositAccounts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdjustmentsForDecreaseIncreaseInShortTermDepositAccounts" xlink:to="iva_AdjustmentsForDecreaseIncreaseInShortTermDepositAccounts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdjustmentsForDecreaseIncreaseInShortTermDepositAccounts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for decrease (increase) in short-term deposit accounts to reconcile profit (loss) to net cash flow from (used in) operating activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdjustmentsForDecreaseIncreaseInShortTermDepositAccounts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for Decrease (Increase) in Short-Term Deposit Accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AdjustmentsForDecreaseIncreaseInShortTermDepositAccounts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in short-term deposit accounts</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NotesToConsolidatedBalanceSheet" xlink:label="iva_NotesToConsolidatedBalanceSheet" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NotesToConsolidatedBalanceSheet" xlink:to="iva_NotesToConsolidatedBalanceSheet_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NotesToConsolidatedBalanceSheet_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NotesToConsolidatedBalanceSheet_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables, short-term contract liabilities and other current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsTable" xlink:label="ifrs-full_DisclosureOfFinancialAssetsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialAssetsTable" xlink:to="ifrs-full_DisclosureOfFinancialAssetsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialAssetsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial assets [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:label="ifrs-full_DisclosureOfFinancialAssetsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:to="ifrs-full_DisclosureOfFinancialAssetsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial assets [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents balance from the statement of cash flows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents" xlink:label="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents" xlink:to="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term deposits, classified as cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other cash equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Cash" xlink:label="ifrs-full_Cash" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Cash" xlink:to="ifrs-full_Cash_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Cash_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Cash_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash at bank and at hand</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:label="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:to="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents if different from statement of financial position</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents balance from the statement of cash flows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in cash and cash equivalents after effect of exchange rate changes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementUpfrontFeeReceived" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceived" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementUpfrontFeeReceived" xlink:to="iva_LicenseAndCollaborationAgreementUpfrontFeeReceived_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of upfront fee received by the entity, pursuant to licensing and collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License and Collaboration Agreement Upfront Fee Received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementUpfrontFeeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Upfront payment received</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BonusSharesMember" xlink:label="iva_BonusSharesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BonusSharesMember" xlink:to="iva_BonusSharesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BonusSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The member represents Bonus shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BonusSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bonus shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BonusSharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bonus shares</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga2021Aga2021BisMember" xlink:label="iva_Aga2021Aga2021BisMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga2021Aga2021BisMember" xlink:to="iva_Aga2021Aga2021BisMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga2021Aga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2021 &amp; AGA 2021 bis.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga2021Aga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021 &amp; AGA 2021 bis [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga2021Aga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021 &amp; AGA 2021 bis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Aga2021Aga2021BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2021 &amp; AGA 2021 BIS</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20241Aga20242AndAga20243Member" xlink:label="iva_Aga20241Aga20242AndAga20243Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20241Aga20242AndAga20243Member" xlink:to="iva_Aga20241Aga20242AndAga20243Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20241Aga20242AndAga20243Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2024-1, AGA- 2024-2 and AGA 2024-3.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20241Aga20242AndAga20243Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-1, AGA- 2024-2 and AGA 2024-3 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20241Aga20242AndAga20243Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2024-1, AGA- 2024-2 and AGA 2024-3</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T1BsaWarrantsAndT1BisBsaWarrantsMember" xlink:label="iva_T1BsaWarrantsAndT1BisBsaWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T1BsaWarrantsAndT1BisBsaWarrantsMember" xlink:to="iva_T1BsaWarrantsAndT1BisBsaWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T1BsaWarrantsAndT1BisBsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents T1 BSA warrants and T1 bis BSA warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T1BsaWarrantsAndT1BisBsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 BSA warrants and T1 bis BSA warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T1BsaWarrantsAndT1BisBsaWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T1 BSA warrants and T1 bis BSA warrants</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding" xlink:label="ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding" xlink:to="ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in number of shares outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SharePriceMeasurementInput" xlink:label="iva_SharePriceMeasurementInput" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SharePriceMeasurementInput" xlink:to="iva_SharePriceMeasurementInput_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SharePriceMeasurementInput_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share price, measurement input.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SharePriceMeasurementInput_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share price, measurement input</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FairValueOfSharesIssued" xlink:label="iva_FairValueOfSharesIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FairValueOfSharesIssued" xlink:to="iva_FairValueOfSharesIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FairValueOfSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of shares issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FairValueOfSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of shares issued</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfWarrantsExercisedDuringPeriodShares" xlink:label="iva_NumberOfWarrantsExercisedDuringPeriodShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfWarrantsExercisedDuringPeriodShares" xlink:to="iva_NumberOfWarrantsExercisedDuringPeriodShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfWarrantsExercisedDuringPeriodShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of warrants exercised during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfWarrantsExercisedDuringPeriodShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Warrants Exercised During Period, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfWarrantsExercisedDuringPeriodShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants exercised during the period</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockIssuedDuringPeriodSharesWarrantExercised" xlink:label="iva_StockIssuedDuringPeriodSharesWarrantExercised" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockIssuedDuringPeriodSharesWarrantExercised" xlink:to="iva_StockIssuedDuringPeriodSharesWarrantExercised_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockIssuedDuringPeriodSharesWarrantExercised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares issued during period upon exercise of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockIssuedDuringPeriodSharesWarrantExercised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock Issued During Period, Shares, Warrant Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_StockIssuedDuringPeriodSharesWarrantExercised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares issued during period upon exercise of warrants</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromExerciseOfWarrants" xlink:label="ifrs-full_ProceedsFromExerciseOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProceedsFromExerciseOfWarrants" xlink:to="ifrs-full_ProceedsFromExerciseOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProceedsFromExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from exercise of warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProceedsFromExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from exercise of warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ClassOfWarrantOrRightExercisedDuringPeriod" xlink:label="iva_ClassOfWarrantOrRightExercisedDuringPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ClassOfWarrantOrRightExercisedDuringPeriod" xlink:to="iva_ClassOfWarrantOrRightExercisedDuringPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ClassOfWarrantOrRightExercisedDuringPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants or rights exercised during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ClassOfWarrantOrRightExercisedDuringPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class Of Warrant Or Right, Exercised During Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ClassOfWarrantOrRightExercisedDuringPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants exercised</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LiquidityAgreementWithKeplerCheuvreuxMember" xlink:label="iva_LiquidityAgreementWithKeplerCheuvreuxMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LiquidityAgreementWithKeplerCheuvreuxMember" xlink:to="iva_LiquidityAgreementWithKeplerCheuvreuxMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LiquidityAgreementWithKeplerCheuvreuxMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the Liquidity agreement with Kepler Cheuvreux.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LiquidityAgreementWithKeplerCheuvreuxMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liquidity agreement with Kepler Cheuvreux [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LiquidityAgreementWithKeplerCheuvreuxMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liquidity agreement with Kepler Cheuvreux</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LiquidityAgreementTerm" xlink:label="iva_LiquidityAgreementTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LiquidityAgreementTerm" xlink:to="iva_LiquidityAgreementTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LiquidityAgreementTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of days used to determine liquidity agreement term  in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LiquidityAgreementTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liquidity Agreement Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LiquidityAgreementTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liquidity agreement term</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BsaShareWarrantsMember" xlink:label="iva_BsaShareWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BsaShareWarrantsMember" xlink:to="iva_BsaShareWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BsaShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA share warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BsaShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA share warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BsaShareWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA share warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bsa20231ShareWarrantPlanMember" xlink:label="iva_Bsa20231ShareWarrantPlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bsa20231ShareWarrantPlanMember" xlink:to="iva_Bsa20231ShareWarrantPlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bsa20231ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA 2023-1 share warrants plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bsa20231ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2023-1 Share Warrant Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Bsa20231ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2023-1</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bsa20232ShareWarrantPlanMember" xlink:label="iva_Bsa20232ShareWarrantPlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bsa20232ShareWarrantPlanMember" xlink:to="iva_Bsa20232ShareWarrantPlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bsa20232ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA 2023-2 share warrants plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bsa20232ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2023-2 Share Warrant Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Bsa20232ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2023-2</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DirectorsMember" xlink:label="iva_DirectorsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DirectorsMember" xlink:to="iva_DirectorsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DirectorsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Directors.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DirectorsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Directors</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DirectorsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Directors</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ServiceProvidersMember" xlink:label="iva_ServiceProvidersMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ServiceProvidersMember" xlink:to="iva_ServiceProvidersMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ServiceProvidersMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to service providers.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ServiceProvidersMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Service Providers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ServiceProvidersMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Service providers</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DavidNikodemMember" xlink:label="iva_DavidNikodemMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DavidNikodemMember" xlink:to="iva_DavidNikodemMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DavidNikodemMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for David Nikodem, a member of Sapidus Consulting Group LLC, a service provider to the Company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DavidNikodemMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">David Nikodem</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DavidNikodemMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">David Nikodem</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_JeremyGoldbergMember" xlink:label="iva_JeremyGoldbergMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_JeremyGoldbergMember" xlink:to="iva_JeremyGoldbergMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_JeremyGoldbergMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Jeremy Goldberg.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_JeremyGoldbergMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Jeremy Goldberg</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_JeremyGoldbergMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Jrmy Goldberg</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsSubscriptionPrice" xlink:label="iva_WarrantsSubscriptionPrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsSubscriptionPrice" xlink:to="iva_WarrantsSubscriptionPrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The subscription price per warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants, Subscription Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantsSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription premium price per share (&#x20AC;)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_WarrantsSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price per warrant</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019" xlink:to="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average exercise price of other equity instruments granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bspce2021PlanMember" xlink:label="iva_Bspce2021PlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bspce2021PlanMember" xlink:to="iva_Bspce2021PlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bspce2021PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSPCE 2021 plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bspce2021PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Bspce2021PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Bspce2021PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE - Plan 2021</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019" xlink:to="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price (in euros)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price (&#x20AC;)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted" xlink:label="ifrs-full_WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted" xlink:to="ifrs-full_WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average fair value at measurement date, other equity instruments granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value per instrument at grant date</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:label="iva_ExpectedVolatilityOtherEquityInstrumentsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:to="iva_ExpectedVolatilityOtherEquityInstrumentsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ExpectedVolatilityOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The expected volatility of other equity instruments granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ExpectedVolatilityOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected Volatility, Other Equity Instruments Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ExpectedVolatilityOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected volatility</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AverageLifeOtherEquityInstrumentsGranted" xlink:label="iva_AverageLifeOtherEquityInstrumentsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AverageLifeOtherEquityInstrumentsGranted" xlink:to="iva_AverageLifeOtherEquityInstrumentsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AverageLifeOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The average life of other equity instruments granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AverageLifeOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average Life, Other Equity Instruments Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AverageLifeOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average life (years)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsRiskFreeInterestRate" xlink:label="iva_WarrantsRiskFreeInterestRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsRiskFreeInterestRate" xlink:to="iva_WarrantsRiskFreeInterestRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsRiskFreeInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Risk free interest rate used to calculate fair value of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsRiskFreeInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants, Risk Free Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantsRiskFreeInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Risk-free rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BsaPlansMember" xlink:label="iva_BsaPlansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BsaPlansMember" xlink:to="iva_BsaPlansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BsaPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BsaPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BsaPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA Plans</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bsa2017PlanMember" xlink:label="iva_Bsa2017PlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bsa2017PlanMember" xlink:to="iva_Bsa2017PlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bsa2017PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA - 2017 plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bsa2017PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA - 2017 plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Bsa2017PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2017</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_Bsa2017PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA - Plan 2017</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bsa20181PlanMember" xlink:label="iva_Bsa20181PlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bsa20181PlanMember" xlink:to="iva_Bsa20181PlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bsa20181PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA - 2018-1 plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bsa20181PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA - 2018-1 Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Bsa20181PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2018-1</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bsa2019PlanMember" xlink:label="iva_Bsa2019PlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bsa2019PlanMember" xlink:to="iva_Bsa2019PlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bsa2019PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA - 2019 plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bsa2019PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA - 2019 plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Bsa2019PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2019</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewShareWarrantPlansBsa2019BisMember" xlink:label="iva_NewShareWarrantPlansBsa2019BisMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewShareWarrantPlansBsa2019BisMember" xlink:to="iva_NewShareWarrantPlansBsa2019BisMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewShareWarrantPlansBsa2019BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for a new share warrant plan ("BSA 2019 bis).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewShareWarrantPlansBsa2019BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2019 bis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NewShareWarrantPlansBsa2019BisMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2019 Bis</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewShareWarrantPlansBsa2019TerMember" xlink:label="iva_NewShareWarrantPlansBsa2019TerMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewShareWarrantPlansBsa2019TerMember" xlink:to="iva_NewShareWarrantPlansBsa2019TerMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewShareWarrantPlansBsa2019TerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for a new share warrant plan ("BSA 2019 ter).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewShareWarrantPlansBsa2019TerMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2019 ter</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NewBsa2021ShareWarrantPlanMember" xlink:label="iva_NewBsa2021ShareWarrantPlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NewBsa2021ShareWarrantPlanMember" xlink:to="iva_NewBsa2021ShareWarrantPlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NewBsa2021ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for new BSA 2021 share warrant plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NewBsa2021ShareWarrantPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA 2021</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsVestingAxis" xlink:label="iva_IfrsVestingAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsVestingAxis" xlink:to="iva_IfrsVestingAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsVestingAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Information by vesting schedule of award under share-based payment arrangement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsVestingAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Vesting [Axis]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsVestingDomain" xlink:label="iva_IfrsVestingDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsVestingDomain" xlink:to="iva_IfrsVestingDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsVestingDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Vesting schedule of award under share-based payment arrangement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsVestingDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Vesting [Domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsShareBasedPaymentArrangementTrancheOneMember" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheOneMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsShareBasedPaymentArrangementTrancheOneMember" xlink:to="iva_IfrsShareBasedPaymentArrangementTrancheOneMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">First portion of award under share-based payment arrangement differentiated by vesting feature, including, but not limited to, performance measure or service period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche one</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsShareBasedPaymentArrangementTrancheTwoMember" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheTwoMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsShareBasedPaymentArrangementTrancheTwoMember" xlink:to="iva_IfrsShareBasedPaymentArrangementTrancheTwoMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheTwoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Second portion of award under share-based payment arrangement differentiated by vesting feature, including, but not limited to, performance measure or service period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheTwoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche two</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsShareBasedPaymentArrangementTrancheThreeMember" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheThreeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsShareBasedPaymentArrangementTrancheThreeMember" xlink:to="iva_IfrsShareBasedPaymentArrangementTrancheThreeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheThreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Third portion of award under share-based payment arrangement differentiated by vesting feature, including, but not limited to, performance measure or service period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsShareBasedPaymentArrangementTrancheThreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche three</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments outstanding in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding, Ending balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding, Beginning balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of share warrants plan</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod" xlink:label="iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod" xlink:to="iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Period which the right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Vesting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Vesting period (year)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BspcePlansMember" xlink:label="iva_BspcePlansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BspcePlansMember" xlink:to="iva_BspcePlansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BspcePlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSPCE plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BspcePlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE plans</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bspce2013PlanMember" xlink:label="iva_Bspce2013PlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bspce2013PlanMember" xlink:to="iva_Bspce2013PlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bspce2013PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSPCE - 2013 plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bspce2013PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE - 2013 Plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Bspce2013PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSPCE - Plan 2013</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Bsa2018PlanMember" xlink:label="iva_Bsa2018PlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Bsa2018PlanMember" xlink:to="iva_Bsa2018PlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Bsa2018PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for BSA - 2018 plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Bsa2018PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA - 2018 plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Bsa2018PlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BSA - Plan 2018</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BasedOnMarketConditionMember" xlink:label="iva_BasedOnMarketConditionMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BasedOnMarketConditionMember" xlink:to="iva_BasedOnMarketConditionMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BasedOnMarketConditionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to based on market condition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BasedOnMarketConditionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Based On Market Condition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BasedOnMarketConditionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Based on Market Condition</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BasedOnNonMarketConditionMember" xlink:label="iva_BasedOnNonMarketConditionMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BasedOnNonMarketConditionMember" xlink:to="iva_BasedOnNonMarketConditionMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BasedOnNonMarketConditionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to based on non-market condition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BasedOnNonMarketConditionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Based On Non-Market Condition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BasedOnNonMarketConditionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Based on Non-Market Condition</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments exercised or vested in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Vested</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments forfeited in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Forfeited / Lapsed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of bonus shares forfeited</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments exercisable in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of exercisable shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments expired in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of bonus shares lapsed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Instruments lapsed</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AgaAndBsaPlansMember" xlink:label="iva_AgaAndBsaPlansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AgaAndBsaPlansMember" xlink:to="iva_AgaAndBsaPlansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AgaAndBsaPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents AGA and BSA share-based payment plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AgaAndBsaPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA and BSA plans [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AgaAndBsaPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA and BSA plans</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga2022Member" xlink:label="iva_Aga2022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga2022Member" xlink:to="iva_Aga2022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for New bonus share award plans (AGA 2022 Plan).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2022</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Aga20251Tr4Member" xlink:label="iva_Aga20251Tr4Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Aga20251Tr4Member" xlink:to="iva_Aga20251Tr4Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Aga20251Tr4Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for AGA 2025-1 (Tr4).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Aga20251Tr4Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-1 (Tr4) [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_Aga20251Tr4Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AGA 2025-1 (Tr4)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PierreBroquaMember" xlink:label="iva_PierreBroquaMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PierreBroquaMember" xlink:to="iva_PierreBroquaMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PierreBroquaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Pierre Broqua</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PierreBroquaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Pierre Broqua [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PierreBroquaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Pierre Broqua</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfBonusShareAwardPlansInShareBasedPaymentArrangement" xlink:label="iva_NumberOfBonusShareAwardPlansInShareBasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfBonusShareAwardPlansInShareBasedPaymentArrangement" xlink:to="iva_NumberOfBonusShareAwardPlansInShareBasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfBonusShareAwardPlansInShareBasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the number of bonus share award plans approved by the reporting entity during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfBonusShareAwardPlansInShareBasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Bonus Share Award Plans In Share-based Payment Arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfBonusShareAwardPlansInShareBasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of bonus share award plans</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_HoldingPeriodOfAwardsGrantedInShareBasedPaymentArrangement" xlink:label="iva_HoldingPeriodOfAwardsGrantedInShareBasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_HoldingPeriodOfAwardsGrantedInShareBasedPaymentArrangement" xlink:to="iva_HoldingPeriodOfAwardsGrantedInShareBasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_HoldingPeriodOfAwardsGrantedInShareBasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the holding period of awards granted in share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_HoldingPeriodOfAwardsGrantedInShareBasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Holding Period Of Awards Granted In Share-Based Payment Arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_HoldingPeriodOfAwardsGrantedInShareBasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Holding period (year)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSharesPerOtherEquityInstrumentGranted" xlink:label="iva_NumberOfSharesPerOtherEquityInstrumentGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSharesPerOtherEquityInstrumentGranted" xlink:to="iva_NumberOfSharesPerOtherEquityInstrumentGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSharesPerOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares that each equity instruments other than share options granted in a share-based payment arrangement, entitles the holder.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSharesPerOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Shares Per Other Equity Instrument Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfSharesPerOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares per AGA</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RiskFreeInterestRateOtherEquityInstrumentsGranted" xlink:label="iva_RiskFreeInterestRateOtherEquityInstrumentsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RiskFreeInterestRateOtherEquityInstrumentsGranted" xlink:to="iva_RiskFreeInterestRateOtherEquityInstrumentsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RiskFreeInterestRateOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The risk-free interest rate of other equity instruments granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RiskFreeInterestRateOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Risk-Free Interest Rate, Other Equity Instruments Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RiskFreeInterestRateOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Risk-free rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DepartureOfEmployeesMember" xlink:label="iva_DepartureOfEmployeesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DepartureOfEmployeesMember" xlink:to="iva_DepartureOfEmployeesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DepartureOfEmployeesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the departure of employees.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DepartureOfEmployeesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Departure of employees [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DepartureOfEmployeesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Departure of employees</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ReferencePricePerUnit" xlink:label="iva_ReferencePricePerUnit" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ReferencePricePerUnit" xlink:to="iva_ReferencePricePerUnit_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ReferencePricePerUnit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reference price per unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ReferencePricePerUnit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reference price per unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ReferencePricePerUnit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reference price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfInstrumentsOtherEquityInstrumentsConverted" xlink:label="iva_NumberOfInstrumentsOtherEquityInstrumentsConverted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfInstrumentsOtherEquityInstrumentsConverted" xlink:to="iva_NumberOfInstrumentsOtherEquityInstrumentsConverted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfInstrumentsOtherEquityInstrumentsConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of other equity instruments (ie other than share options) converted in a share-based payment arrangement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfInstrumentsOtherEquityInstrumentsConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Instruments Other Equity Instruments, Converted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_NumberOfInstrumentsOtherEquityInstrumentsConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Converted</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MaximumShareholdingInEntityToBeLegallyAllowedToParticipateInPlan" xlink:label="iva_MaximumShareholdingInEntityToBeLegallyAllowedToParticipateInPlan" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MaximumShareholdingInEntityToBeLegallyAllowedToParticipateInPlan" xlink:to="iva_MaximumShareholdingInEntityToBeLegallyAllowedToParticipateInPlan_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MaximumShareholdingInEntityToBeLegallyAllowedToParticipateInPlan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum shareholding in entity to be legally allowed to participate in plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MaximumShareholdingInEntityToBeLegallyAllowedToParticipateInPlan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum shareholding in entity to be legally allowed to participate in plan</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MinimumPeriodToHoldLessThanThresholdValueOfSharesToBecomeEligibleForParticipationInPlan" xlink:label="iva_MinimumPeriodToHoldLessThanThresholdValueOfSharesToBecomeEligibleForParticipationInPlan" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MinimumPeriodToHoldLessThanThresholdValueOfSharesToBecomeEligibleForParticipationInPlan" xlink:to="iva_MinimumPeriodToHoldLessThanThresholdValueOfSharesToBecomeEligibleForParticipationInPlan_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MinimumPeriodToHoldLessThanThresholdValueOfSharesToBecomeEligibleForParticipationInPlan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum period to hold less than threshold value of shares to become eligible for participation in plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MinimumPeriodToHoldLessThanThresholdValueOfSharesToBecomeEligibleForParticipationInPlan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum period to hold less than threshold value of shares to become eligible for participation in plan</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MarkPruzanskiMember" xlink:label="iva_MarkPruzanskiMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MarkPruzanskiMember" xlink:to="iva_MarkPruzanskiMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MarkPruzanskiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Mark Pruzanski.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MarkPruzanskiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Mark Pruzanski [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MarkPruzanskiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Mark Pruzanski</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AndrewObenshainMember" xlink:label="iva_AndrewObenshainMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AndrewObenshainMember" xlink:to="iva_AndrewObenshainMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AndrewObenshainMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Andrew Obenshain.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AndrewObenshainMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Andrew Obenshain [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AndrewObenshainMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Andrew Obenshain</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSharesCallablePerOption" xlink:label="iva_NumberOfSharesCallablePerOption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSharesCallablePerOption" xlink:to="iva_NumberOfSharesCallablePerOption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSharesCallablePerOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares callable per option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSharesCallablePerOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares callable per option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_NumberOfSharesCallablePerOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares per SO</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted" xlink:label="ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted" xlink:to="ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected volatility, share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected volatility</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfOptionLifeShareOptionsGranted" xlink:label="ifrs-full_DescriptionOfOptionLifeShareOptionsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DescriptionOfOptionLifeShareOptionsGranted" xlink:to="ifrs-full_DescriptionOfOptionLifeShareOptionsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfOptionLifeShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Option life, share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfOptionLifeShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average life (years)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted" xlink:label="ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted" xlink:to="ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Risk free interest rate, share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Risk-free rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted" xlink:label="ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted" xlink:to="ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average fair value at measurement date, share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value per SO at grant date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageSharePrice2019" xlink:label="ifrs-full_WeightedAverageSharePrice2019" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WeightedAverageSharePrice2019" xlink:to="ifrs-full_WeightedAverageSharePrice2019_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageSharePrice2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average share price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WeightedAverageSharePrice2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share price</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOutstandingShareOptions" xlink:label="ifrs-full_NumberOfOutstandingShareOptions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOutstandingShareOptions" xlink:to="ifrs-full_NumberOfOutstandingShareOptions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOutstandingShareOptions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of share options outstanding in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_NumberOfOutstandingShareOptions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding at end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_NumberOfOutstandingShareOptions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding at beginning of period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of share options forfeited in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Forfeited/Lapsed</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_StockOptionUnitValue" xlink:label="iva_StockOptionUnitValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_StockOptionUnitValue" xlink:to="iva_StockOptionUnitValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_StockOptionUnitValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock option unit value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_StockOptionUnitValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock option unit value</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ImpliedStockOptionsFairValue" xlink:label="iva_ImpliedStockOptionsFairValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ImpliedStockOptionsFairValue" xlink:to="iva_ImpliedStockOptionsFairValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ImpliedStockOptionsFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Implied stock options fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ImpliedStockOptionsFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Implied stock options fair values</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:label="ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:to="ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities arising from financing activities [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain" xlink:label="ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain" xlink:to="ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities arising from financing activities [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermBorrowingsMember" xlink:label="ifrs-full_ShorttermBorrowingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShorttermBorrowingsMember" xlink:to="ifrs-full_ShorttermBorrowingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShorttermBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term borrowings [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ShorttermBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ShorttermBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermBorrowingsMember" xlink:label="ifrs-full_LongtermBorrowingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LongtermBorrowingsMember" xlink:to="ifrs-full_LongtermBorrowingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LongtermBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term borrowings [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LongtermBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_LongtermBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LoansReceived" xlink:label="ifrs-full_LoansReceived" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LoansReceived" xlink:to="ifrs-full_LoansReceived_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LoansReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loans received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LoansReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bank borrowings and related derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_LoansReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bank borrowings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestPayable" xlink:label="ifrs-full_InterestPayable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestPayable" xlink:to="ifrs-full_InterestPayable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestPayable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestPayable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued interest payable on loans</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilities" xlink:label="ifrs-full_LeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LeaseLiabilities" xlink:to="ifrs-full_LeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings" xlink:label="ifrs-full_Borrowings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Borrowings" xlink:to="ifrs-full_Borrowings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Borrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Borrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_Borrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DebtFinancial" xlink:label="iva_DebtFinancial" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DebtFinancial" xlink:to="iva_DebtFinancial_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DebtFinancial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt, financial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DebtFinancial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt, financial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="iva_DebtFinancial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ending balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="iva_DebtFinancial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Beginning balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="iva_DebtFinancial_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total Debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanOneYearMember" xlink:label="ifrs-full_NotLaterThanOneYearMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NotLaterThanOneYearMember" xlink:to="ifrs-full_NotLaterThanOneYearMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NotLaterThanOneYearMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Not later than one year [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NotLaterThanOneYearMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Less than 1 year</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xlink:label="ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xlink:to="ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Later than one year and not later than three years [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Between 1 and 3 years</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember" xlink:label="ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember" xlink:to="ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Later than three years and not later than five years [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Between 3 and 5 years</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanFiveYearsMember" xlink:label="ifrs-full_LaterThanFiveYearsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LaterThanFiveYearsMember" xlink:to="ifrs-full_LaterThanFiveYearsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LaterThanFiveYearsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Later than five years [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LaterThanFiveYearsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">More than 5 years</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInBorrowingsThroughNewLeases" xlink:label="iva_IncreaseInBorrowingsThroughNewLeases" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInBorrowingsThroughNewLeases" xlink:to="iva_IncreaseInBorrowingsThroughNewLeases_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInBorrowingsThroughNewLeases_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in borrowings through new leases.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInBorrowingsThroughNewLeases_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase In Borrowings Through New Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IncreaseInBorrowingsThroughNewLeases_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription of lease liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInBorrowingsThroughSubscriptionOfShortTermDerivativeInstruments" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfShortTermDerivativeInstruments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInBorrowingsThroughSubscriptionOfShortTermDerivativeInstruments" xlink:to="iva_IncreaseInBorrowingsThroughSubscriptionOfShortTermDerivativeInstruments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfShortTermDerivativeInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase in borrowings due to subscription of short-term derivative instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfShortTermDerivativeInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase In Borrowings Through Subscription Of Short-term Derivative Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfShortTermDerivativeInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription of short-term derivatives instruments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInBorrowingsThroughSubscriptionOfLongTermDerivativeInstrumentsAndBankBorrowings" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfLongTermDerivativeInstrumentsAndBankBorrowings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInBorrowingsThroughSubscriptionOfLongTermDerivativeInstrumentsAndBankBorrowings" xlink:to="iva_IncreaseInBorrowingsThroughSubscriptionOfLongTermDerivativeInstrumentsAndBankBorrowings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfLongTermDerivativeInstrumentsAndBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase in borrowings due to subscription of long-term derivative instruments and bank borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfLongTermDerivativeInstrumentsAndBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase In Borrowings Through Subscription Of Long-term Derivative Instruments and Bank Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseInBorrowingsThroughSubscriptionOfLongTermDerivativeInstrumentsAndBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription of long-term derivatives instruments and bank borrowings</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInBorrowingsThroughIssueOfRoyaltyCertificates" xlink:label="iva_IncreaseDecreaseInBorrowingsThroughIssueOfRoyaltyCertificates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInBorrowingsThroughIssueOfRoyaltyCertificates" xlink:to="iva_IncreaseDecreaseInBorrowingsThroughIssueOfRoyaltyCertificates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInBorrowingsThroughIssueOfRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in borrowings due to issue of royalty certificates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInBorrowingsThroughIssueOfRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Borrowings Through Issue Of Royalty Certificates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInBorrowingsThroughIssueOfRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of royalty certificates</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DecreaseInBorrowingsThroughRepaymentsOfBankBorrowings" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentsOfBankBorrowings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DecreaseInBorrowingsThroughRepaymentsOfBankBorrowings" xlink:to="iva_DecreaseInBorrowingsThroughRepaymentsOfBankBorrowings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentsOfBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of decrease in borrowings through repayments of bank borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentsOfBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in borrowings through repayments of bank borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentsOfBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment of bank borrowings</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DecreaseInBorrowingsThroughRepaymentOfLeaseLiabilities" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentOfLeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DecreaseInBorrowingsThroughRepaymentOfLeaseLiabilities" xlink:to="iva_DecreaseInBorrowingsThroughRepaymentOfLeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentOfLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of decrease in borrowings through repayment of lease liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentOfLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in borrowings through repayment of lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_DecreaseInBorrowingsThroughRepaymentOfLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment of lease liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_InterestOnRoyaltyCertificates" xlink:label="iva_InterestOnRoyaltyCertificates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_InterestOnRoyaltyCertificates" xlink:to="iva_InterestOnRoyaltyCertificates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_InterestOnRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase in borrowings through interests on royalty certificates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_InterestOnRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest On Royalty Certificates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_InterestOnRoyaltyCertificates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interests on royalty certificates</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInBorrowingsThroughCapitalizedInterest" xlink:label="iva_IncreaseInBorrowingsThroughCapitalizedInterest" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInBorrowingsThroughCapitalizedInterest" xlink:to="iva_IncreaseInBorrowingsThroughCapitalizedInterest_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInBorrowingsThroughCapitalizedInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase in borrowings through capitalized interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInBorrowingsThroughCapitalizedInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in borrowings through capitalized interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseInBorrowingsThroughCapitalizedInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalized interests</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseOrDecreaseInBorrowingsDueToChangeInFairValueOfDerivativesInstruments" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangeInFairValueOfDerivativesInstruments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseOrDecreaseInBorrowingsDueToChangeInFairValueOfDerivativesInstruments" xlink:to="iva_IncreaseOrDecreaseInBorrowingsDueToChangeInFairValueOfDerivativesInstruments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangeInFairValueOfDerivativesInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase or decrease in borrowings due to change in fair value of derivatives instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangeInFairValueOfDerivativesInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Or Decrease In Borrowings Due To Change in Fair Value of Derivatives Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangeInFairValueOfDerivativesInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Change in fair value of derivatives instruments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInBorrowingsDueToSettlementOfDerivativeInstruments" xlink:label="iva_IncreaseDecreaseInBorrowingsDueToSettlementOfDerivativeInstruments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInBorrowingsDueToSettlementOfDerivativeInstruments" xlink:to="iva_IncreaseDecreaseInBorrowingsDueToSettlementOfDerivativeInstruments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInBorrowingsDueToSettlementOfDerivativeInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in borrowings upon settlement of derivative instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInBorrowingsDueToSettlementOfDerivativeInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Borrowings Due To Settlement Of Derivative Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInBorrowingsDueToSettlementOfDerivativeInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Settlement of derivatives instruments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseOrDecreaseInBorrowingsDueToChangesInExchangeRates" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangesInExchangeRates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseOrDecreaseInBorrowingsDueToChangesInExchangeRates" xlink:to="iva_IncreaseOrDecreaseInBorrowingsDueToChangesInExchangeRates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangesInExchangeRates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase or decrease in borrowings due to exchange rate change.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangesInExchangeRates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase or Decrease in Borrowings Due to Changes in Exchange Rates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseOrDecreaseInBorrowingsDueToChangesInExchangeRates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exchange rate change</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInBorrowingsDueToSubscriptionOfShortTermBankBorrowings" xlink:label="iva_IncreaseInBorrowingsDueToSubscriptionOfShortTermBankBorrowings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInBorrowingsDueToSubscriptionOfShortTermBankBorrowings" xlink:to="iva_IncreaseInBorrowingsDueToSubscriptionOfShortTermBankBorrowings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInBorrowingsDueToSubscriptionOfShortTermBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase in borrowings due to subscription of short-term bank borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInBorrowingsDueToSubscriptionOfShortTermBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase In Borrowings Due To Subscription of Short-term Bank Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseInBorrowingsDueToSubscriptionOfShortTermBankBorrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription of short-term bank borrowings</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BankBorrowingsMember" xlink:label="iva_BankBorrowingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BankBorrowingsMember" xlink:to="iva_BankBorrowingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BankBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for bank borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BankBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bank Borrowings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BankBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total Bank Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_BankBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bank Borrowings</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PgeSg2020Member" xlink:label="iva_PgeSg2020Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PgeSg2020Member" xlink:to="iva_PgeSg2020Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PgeSg2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to PGE SG 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PgeSg2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE SG 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PgeSg2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE SG 2020</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PgeBpiFrance2020Member" xlink:label="iva_PgeBpiFrance2020Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PgeBpiFrance2020Member" xlink:to="iva_PgeBpiFrance2020Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PgeBpiFrance2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to PGE BPI France 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PgeBpiFrance2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE BPI France 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PgeBpiFrance2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE BPI France 2020</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PgeCa2020Member" xlink:label="iva_PgeCa2020Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PgeCa2020Member" xlink:to="iva_PgeCa2020Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PgeCa2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to PGE CA 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PgeCa2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE CA 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PgeCa2020Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE CA 2020</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PprCa2022Member" xlink:label="iva_PprCa2022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PprCa2022Member" xlink:to="iva_PprCa2022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PprCa2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to PPR CA 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PprCa2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PPR CA 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PprCa2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PPR CA 2022</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PprSg2022Member" xlink:label="iva_PprSg2022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PprSg2022Member" xlink:to="iva_PprSg2022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PprSg2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to PPR SG 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PprSg2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PPR SG 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PprSg2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PPR SG 2022</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PgeBpiFrance2022Member" xlink:label="iva_PgeBpiFrance2022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PgeBpiFrance2022Member" xlink:to="iva_PgeBpiFrance2022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PgeBpiFrance2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to PGE BPI France 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PgeBpiFrance2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE BPI France 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PgeBpiFrance2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE BPI France 2022</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsBankOverdraftsMember" xlink:label="iva_IfrsBankOverdraftsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsBankOverdraftsMember" xlink:to="iva_IfrsBankOverdraftsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsBankOverdraftsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bank Overdrafts [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsBankOverdraftsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Bank Overdrafts [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsBankOverdraftsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bank overdraft</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember" xlink:label="ifrs-full_DerivativesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DerivativesMember" xlink:to="ifrs-full_DerivativesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivatives [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DerivativesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivatives</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EuropeanInvestmentBankWarrantsTrancheaMember" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheaMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EuropeanInvestmentBankWarrantsTrancheaMember" xlink:to="iva_EuropeanInvestmentBankWarrantsTrancheaMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for European Investment bank warrants Tranche A.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">European Investment Bank Warrants Tranche A [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB Warrants Tranche A</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EuropeanInvestmentBankWarrantsTrancheBMember" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheBMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EuropeanInvestmentBankWarrantsTrancheBMember" xlink:to="iva_EuropeanInvestmentBankWarrantsTrancheBMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheBMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for European Investment bank warrants Tranche B.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheBMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">European Investment Bank Warrants Tranche B [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_EuropeanInvestmentBankWarrantsTrancheBMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB Warrants Tranche B</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_T2NewSharesAndT2BsasCallOptionsMember" xlink:label="iva_T2NewSharesAndT2BsasCallOptionsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_T2NewSharesAndT2BsasCallOptionsMember" xlink:to="iva_T2NewSharesAndT2BsasCallOptionsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_T2NewSharesAndT2BsasCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for T2 New Shares and T2 BSAs call options.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_T2NewSharesAndT2BsasCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Shares and T2 BSAs Call Options [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_T2NewSharesAndT2BsasCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Shares and T2 BSAs call options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_T2NewSharesAndT2BsasCallOptionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">T2 New Shares and T2 BSAs</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AccrualInterestsMember" xlink:label="iva_AccrualInterestsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AccrualInterestsMember" xlink:to="iva_AccrualInterestsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AccrualInterestsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to accrual interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AccrualInterestsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrual Interests [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_AccrualInterestsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrual Interests</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AccruedInterestPayableOnLoansMember" xlink:label="iva_AccruedInterestPayableOnLoansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AccruedInterestPayableOnLoansMember" xlink:to="iva_AccruedInterestPayableOnLoansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AccruedInterestPayableOnLoansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for accrued interest payable on loans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AccruedInterestPayableOnLoansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued interest payable on loans [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_AccruedInterestPayableOnLoansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued interest payable on loans</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltyCertificatesMember" xlink:label="iva_RoyaltyCertificatesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RoyaltyCertificatesMember" xlink:to="iva_RoyaltyCertificatesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltyCertificatesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to royalty certificates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RoyaltyCertificatesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificates [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_RoyaltyCertificatesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty certificates liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilitiesMember" xlink:label="ifrs-full_LeaseLiabilitiesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LeaseLiabilitiesMember" xlink:to="ifrs-full_LeaseLiabilitiesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LeaseLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease liabilities [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LeaseLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BeiEmpruntPart12022Member" xlink:label="iva_BeiEmpruntPart12022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BeiEmpruntPart12022Member" xlink:to="iva_BeiEmpruntPart12022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BeiEmpruntPart12022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to BEI EMPRUNT PART 1 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BeiEmpruntPart12022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BEI EMPRUNT PART 1 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BeiEmpruntPart12022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BEI EMPRUNT PART 1 2022</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DetteBsaBei2022Member" xlink:label="iva_DetteBsaBei2022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DetteBsaBei2022Member" xlink:to="iva_DetteBsaBei2022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DetteBsaBei2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The information pertaining to DETTE BSA BEI 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DetteBsaBei2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">DETTE BSA BEI 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DetteBsaBei2022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">DETTE BSA BEI 2022</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdditionsToFinancialDebt" xlink:label="iva_AdditionsToFinancialDebt" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdditionsToFinancialDebt" xlink:to="iva_AdditionsToFinancialDebt_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdditionsToFinancialDebt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions to financial debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdditionsToFinancialDebt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions to financial debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AdditionsToFinancialDebt_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInFinancialDebtThroughCapitalizedInterest" xlink:label="iva_IncreaseInFinancialDebtThroughCapitalizedInterest" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInFinancialDebtThroughCapitalizedInterest" xlink:to="iva_IncreaseInFinancialDebtThroughCapitalizedInterest_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInFinancialDebtThroughCapitalizedInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in financial debt through capitalized interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInFinancialDebtThroughCapitalizedInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in financial debt through capitalized interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseInFinancialDebtThroughCapitalizedInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalized interest</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DecreaseInFinancialDebtThroughRepayments" xlink:label="iva_DecreaseInFinancialDebtThroughRepayments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DecreaseInFinancialDebtThroughRepayments" xlink:to="iva_DecreaseInFinancialDebtThroughRepayments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DecreaseInFinancialDebtThroughRepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in financial debt through repayments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DecreaseInFinancialDebtThroughRepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in financial debt through repayments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_DecreaseInFinancialDebtThroughRepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFinancialDebtThroughFairValueMovements" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughFairValueMovements" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFinancialDebtThroughFairValueMovements" xlink:to="iva_IncreaseDecreaseInFinancialDebtThroughFairValueMovements_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughFairValueMovements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in financial debt through fair value movements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughFairValueMovements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in financial debt through fair value movements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughFairValueMovements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value Variation</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFinancialDebtThroughForeignExchangeDifferences" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughForeignExchangeDifferences" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFinancialDebtThroughForeignExchangeDifferences" xlink:to="iva_IncreaseDecreaseInFinancialDebtThroughForeignExchangeDifferences_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughForeignExchangeDifferences_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in financial debt through foreign exchange differences.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughForeignExchangeDifferences_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in financial debt through foreign exchange differences</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInFinancialDebtThroughForeignExchangeDifferences_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Effect of movements in exchange rates</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LoanAgreementsWithSyndicateOfFrenchBanksMember" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LoanAgreementsWithSyndicateOfFrenchBanksMember" xlink:to="iva_LoanAgreementsWithSyndicateOfFrenchBanksMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for loan agreements with a syndicate of French banks.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan Agreements With Syndicate of French Banks [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan agreements with a syndicate of French banks</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LoanAgreementsWithSyndicateOfFrenchBanksUnderStimulusEconomicPlanMember" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksUnderStimulusEconomicPlanMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LoanAgreementsWithSyndicateOfFrenchBanksUnderStimulusEconomicPlanMember" xlink:to="iva_LoanAgreementsWithSyndicateOfFrenchBanksUnderStimulusEconomicPlanMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksUnderStimulusEconomicPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for loan agreements with a syndicate of French banks, under a stimulus economic plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksUnderStimulusEconomicPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan agreements with syndicate of French banks, under stimulus economic plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksUnderStimulusEconomicPlanMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan agreements with syndicate of French banks, under stimulus economic plan</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LoanAgreementsWithSyndicateOfFrenchBanksStateGuaranteedLoanPretGarantiParLetatMember" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksStateGuaranteedLoanPretGarantiParLetatMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LoanAgreementsWithSyndicateOfFrenchBanksStateGuaranteedLoanPretGarantiParLetatMember" xlink:to="iva_LoanAgreementsWithSyndicateOfFrenchBanksStateGuaranteedLoanPretGarantiParLetatMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksStateGuaranteedLoanPretGarantiParLetatMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for loan agreements with syndicate of French banks, state guaranteed loan (Pret Garanti par l'Etat)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksStateGuaranteedLoanPretGarantiParLetatMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan agreements with syndicate of French banks, state guaranteed loan (Pret Garanti par l'Etat) [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LoanAgreementsWithSyndicateOfFrenchBanksStateGuaranteedLoanPretGarantiParLetatMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan agreements with syndicate of French banks, state guaranteed loan (Pret Garanti par l'Etat)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EquityRecoveryLoansMember" xlink:label="iva_EquityRecoveryLoansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EquityRecoveryLoansMember" xlink:to="iva_EquityRecoveryLoansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EquityRecoveryLoansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for equity recovery loans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EquityRecoveryLoansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity Recovery Loans [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_EquityRecoveryLoansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity recovery loans</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingFromSyndicateOfFrenchBanksMember" xlink:label="iva_FinancingFromSyndicateOfFrenchBanksMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingFromSyndicateOfFrenchBanksMember" xlink:to="iva_FinancingFromSyndicateOfFrenchBanksMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingFromSyndicateOfFrenchBanksMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for financing from a syndicate of French banks.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingFromSyndicateOfFrenchBanksMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing from a syndicate of French banks</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancingFromSyndicateOfFrenchBanksMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing from a syndicate of French banks</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfLoansObtainedGuaranteedByFrenchState" xlink:label="iva_NumberOfLoansObtainedGuaranteedByFrenchState" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfLoansObtainedGuaranteedByFrenchState" xlink:to="iva_NumberOfLoansObtainedGuaranteedByFrenchState_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfLoansObtainedGuaranteedByFrenchState_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of loans obtained which are guaranteed by the french state.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfLoansObtainedGuaranteedByFrenchState_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Loans Obtained Guaranteed By The French State</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_NumberOfLoansObtainedGuaranteedByFrenchState_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of loans obtained guaranteed by the french state</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BorrowingsMaximumExtensionTerm" xlink:label="iva_BorrowingsMaximumExtensionTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BorrowingsMaximumExtensionTerm" xlink:to="iva_BorrowingsMaximumExtensionTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BorrowingsMaximumExtensionTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Period up to which the maturity term of the borrowings can be extended.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BorrowingsMaximumExtensionTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, Maximum Extension Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_BorrowingsMaximumExtensionTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Extension of term of debt</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfLoanAgreements" xlink:label="iva_NumberOfLoanAgreements" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfLoanAgreements" xlink:to="iva_NumberOfLoanAgreements_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfLoanAgreements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the number of loan agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfLoanAgreements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Loan Agreements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfLoanAgreements_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of loan agreements</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfLoanGuaranteedByFrenchState" xlink:label="iva_PercentageOfLoanGuaranteedByFrenchState" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfLoanGuaranteedByFrenchState" xlink:to="iva_PercentageOfLoanGuaranteedByFrenchState_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfLoanGuaranteedByFrenchState_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the percentage of loan guaranteed by French state.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfLoanGuaranteedByFrenchState_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of Loan Guaranteed by French State</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfLoanGuaranteedByFrenchState_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of loan guaranteed by French state</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingPeriodOfLoan" xlink:label="iva_FinancingPeriodOfLoan" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingPeriodOfLoan" xlink:to="iva_FinancingPeriodOfLoan_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingPeriodOfLoan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the financing period of loan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingPeriodOfLoan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing Period of Loan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancingPeriodOfLoan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing period of loan</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RepaymentPeriodOfLoan" xlink:label="iva_RepaymentPeriodOfLoan" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RepaymentPeriodOfLoan" xlink:to="iva_RepaymentPeriodOfLoan_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RepaymentPeriodOfLoan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The period for repayment of loan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RepaymentPeriodOfLoan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment Period of Loan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RepaymentPeriodOfLoan_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment period for loan</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DrawdownOfBorrowingsMember" xlink:label="iva_DrawdownOfBorrowingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DrawdownOfBorrowingsMember" xlink:to="iva_DrawdownOfBorrowingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DrawdownOfBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for drawdown of borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DrawdownOfBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Drawdown of borrowings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DrawdownOfBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Drawdown of borrowings</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NotionalAmountPerTranche" xlink:label="iva_NotionalAmountPerTranche" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NotionalAmountPerTranche" xlink:to="iva_NotionalAmountPerTranche_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NotionalAmountPerTranche_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notional amount per tranche</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NotionalAmountPerTranche_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notional Amount Per Tranche</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NotionalAmountPerTranche_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notional amount per tranche</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingCostsIncurred" xlink:label="ifrs-full_BorrowingCostsIncurred" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BorrowingCostsIncurred" xlink:to="ifrs-full_BorrowingCostsIncurred_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BorrowingCostsIncurred_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowing costs incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BorrowingCostsIncurred_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowing costs</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BorrowingsEffectiveInterestRate" xlink:label="iva_BorrowingsEffectiveInterestRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BorrowingsEffectiveInterestRate" xlink:to="iva_BorrowingsEffectiveInterestRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BorrowingsEffectiveInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The effective interest rate on borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BorrowingsEffectiveInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, effective interest rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BorrowingsEffectiveInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, effective interest rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValue" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialLiabilitiesAtFairValue" xlink:to="ifrs-full_FinancialLiabilitiesAtFairValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities, at fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities, at fair value</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BorrowingsActualizationRate" xlink:label="iva_BorrowingsActualizationRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BorrowingsActualizationRate" xlink:to="iva_BorrowingsActualizationRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BorrowingsActualizationRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The actualization interest rate on borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BorrowingsActualizationRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, Actualization Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_BorrowingsActualizationRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actualization rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestCostsCapitalised" xlink:label="ifrs-full_InterestCostsCapitalised" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestCostsCapitalised" xlink:to="ifrs-full_InterestCostsCapitalised_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestCostsCapitalised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest costs capitalised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestCostsCapitalised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalized interest</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfFiveDayVolumeWeightedAveragePriceMoreThan1.35Member" xlink:label="iva_IfFiveDayVolumeWeightedAveragePriceMoreThan1.35Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfFiveDayVolumeWeightedAveragePriceMoreThan1.35Member" xlink:to="iva_IfFiveDayVolumeWeightedAveragePriceMoreThan1.35Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfFiveDayVolumeWeightedAveragePriceMoreThan1.35Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for scenario when 5D-VWAP is more than &#x20AC;1.35.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfFiveDayVolumeWeightedAveragePriceMoreThan1.35Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">If Five day Volume Weighted Average Price More Than &#x20AC;1.35 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfFiveDayVolumeWeightedAveragePriceMoreThan1.35Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">If five day volume weighted average price more than &#x20AC;1.35</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioForecastMember" xlink:label="srt_ScenarioForecastMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioForecastMember" xlink:to="srt_ScenarioForecastMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ScenarioForecastMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Forecast [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_ScenarioForecastMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Forecast</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnobservableInputsAxis" xlink:label="ifrs-full_UnobservableInputsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnobservableInputsAxis" xlink:to="ifrs-full_UnobservableInputsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnobservableInputsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unobservable inputs [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnobservableInputsDomain" xlink:label="ifrs-full_UnobservableInputsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnobservableInputsDomain" xlink:to="ifrs-full_UnobservableInputsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnobservableInputsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unobservable inputs [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSharesCallablePerWarrantMember" xlink:label="iva_NumberOfSharesCallablePerWarrantMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSharesCallablePerWarrantMember" xlink:to="iva_NumberOfSharesCallablePerWarrantMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSharesCallablePerWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the number of shares callable per warrant used as a measurement input.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSharesCallablePerWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares callable per warrant [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfSharesCallablePerWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares callable per warrant</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember" xlink:label="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember" xlink:to="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Historical volatility for shares, measurement input [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Volatility</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MaximumPotentialGrossProceedsFromExerciseOfWarrants" xlink:label="iva_MaximumPotentialGrossProceedsFromExerciseOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MaximumPotentialGrossProceedsFromExerciseOfWarrants" xlink:to="iva_MaximumPotentialGrossProceedsFromExerciseOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MaximumPotentialGrossProceedsFromExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum potential amount of gross proceeds that the company will receive from exercise of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MaximumPotentialGrossProceedsFromExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum Potential Gross Proceeds From Exercise Of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MaximumPotentialGrossProceedsFromExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum potential gross proceeds from exercise of warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TransactionCostsOnIssueOfWarrants" xlink:label="iva_TransactionCostsOnIssueOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TransactionCostsOnIssueOfWarrants" xlink:to="iva_TransactionCostsOnIssueOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TransactionCostsOnIssueOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs on issue of warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TransactionCostsOnIssueOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs on issue of warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TransactionCostsOnIssueOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs on issue of warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsThresholdTradingDays" xlink:label="iva_WarrantsThresholdTradingDays" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsThresholdTradingDays" xlink:to="iva_WarrantsThresholdTradingDays_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsThresholdTradingDays_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Threshold number of specified trading days that common stock price to conversion price of warrants must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsThresholdTradingDays_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants, Threshold Trading Days</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantsThresholdTradingDays_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Threshold trading days of warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsClassOfWarrantOrRightOutstanding" xlink:label="iva_IfrsClassOfWarrantOrRightOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsClassOfWarrantOrRightOutstanding" xlink:to="iva_IfrsClassOfWarrantOrRightOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants or rights outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Class of Warrant or Right, Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of BSA outstanding</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsStockPrice" xlink:label="iva_WarrantsStockPrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsStockPrice" xlink:to="iva_WarrantsStockPrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsStockPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock price used to calculate fair value of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsStockPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants, Stock Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantsStockPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantAverageLife" xlink:label="iva_WarrantAverageLife" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantAverageLife" xlink:to="iva_WarrantAverageLife_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantAverageLife_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average life used to calculate fair value of warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantAverageLife_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrant Average Life</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_WarrantAverageLife_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity (months)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ExpectedVolatility" xlink:label="iva_ExpectedVolatility" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ExpectedVolatility" xlink:to="iva_ExpectedVolatility_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ExpectedVolatility_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected volatility used to calculate fair value of stock and warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ExpectedVolatility_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected volatility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_ExpectedVolatility_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Volatility</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsCapOfPutOption" xlink:label="iva_WarrantsCapOfPutOption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsCapOfPutOption" xlink:to="iva_WarrantsCapOfPutOption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsCapOfPutOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cap of the put option used to calculate fair value of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsCapOfPutOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants, Cap of Put Option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WarrantsCapOfPutOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cap of the put option (k&#x20AC;)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FairValueOfWarrantsOutstanding" xlink:label="iva_FairValueOfWarrantsOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FairValueOfWarrantsOutstanding" xlink:to="iva_FairValueOfWarrantsOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FairValueOfWarrantsOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of warrants outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FairValueOfWarrantsOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of warrants outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FairValueOfWarrantsOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value (k&#x20AC;)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WarrantsUnitFairValue" xlink:label="iva_WarrantsUnitFairValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WarrantsUnitFairValue" xlink:to="iva_WarrantsUnitFairValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WarrantsUnitFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The fair value per unit of warrants outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WarrantsUnitFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants, Unit Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_WarrantsUnitFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unit Fair value (&#x20AC;)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption" xlink:label="iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption" xlink:to="iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The reasonably possible percentage of the increase (decrease) in the designated risk component used to determine the value of the financial instrument. Excludes defined benefit plan obligations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of Reasonably Possible Increase (Decrease) In Risk Assumption</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfReasonablyPossibleIncreaseDecreaseInRiskAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reasonably possible increase (decrease) in risk assumption</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent" xlink:to="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in a financial instrument as a result of an increase (decrease) in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Financial Instrument Due To Reasonably Possible Increase (Decrease) In Designated Risk Component</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impact of reasonably possible increase (decrease) in assumption</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleDecreaseInDesignatedRiskComponent" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleDecreaseInDesignatedRiskComponent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleDecreaseInDesignatedRiskComponent" xlink:to="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleDecreaseInDesignatedRiskComponent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in a financial instrument as a result of a decrease in a designated risk component that was reasonably possible at the end of the reporting period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Financial Instrument Due To Reasonably Possible Decrease In Designated Risk Component</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impact of reasonably possible decrease in assumption</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseInDesignatedRiskComponent" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseInDesignatedRiskComponent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseInDesignatedRiskComponent" xlink:to="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseInDesignatedRiskComponent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in a financial instrument as a result of an increase in a designated risk component that was reasonably possible at the end of the reporting period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Financial Instrument Due To Reasonably Possible Increase In Designated Risk Component</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impact of reasonably possible increase in assumption</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MaximumPotentialGrossProceedsFromIssuanceOfShares" xlink:label="iva_MaximumPotentialGrossProceedsFromIssuanceOfShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MaximumPotentialGrossProceedsFromIssuanceOfShares" xlink:to="iva_MaximumPotentialGrossProceedsFromIssuanceOfShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MaximumPotentialGrossProceedsFromIssuanceOfShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum potential proceeds from issuance of shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MaximumPotentialGrossProceedsFromIssuanceOfShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum Potential Gross Proceeds From Issuance Of Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MaximumPotentialGrossProceedsFromIssuanceOfShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Aggregate gross proceed</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ThresholdNumberOfTradingDaysOfVolumeWeightedAveragePriceTakenForSubscriptionPriceCalculation" xlink:label="iva_ThresholdNumberOfTradingDaysOfVolumeWeightedAveragePriceTakenForSubscriptionPriceCalculation" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ThresholdNumberOfTradingDaysOfVolumeWeightedAveragePriceTakenForSubscriptionPriceCalculation" xlink:to="iva_ThresholdNumberOfTradingDaysOfVolumeWeightedAveragePriceTakenForSubscriptionPriceCalculation_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ThresholdNumberOfTradingDaysOfVolumeWeightedAveragePriceTakenForSubscriptionPriceCalculation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Threshold number of trading days of volume weighted average price of ordinary shares taken for the calculation of subscription price of share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ThresholdNumberOfTradingDaysOfVolumeWeightedAveragePriceTakenForSubscriptionPriceCalculation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Threshold Number Of Trading Days Of Volume Weighted Average Price Taken For Subscription Price Calculation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ThresholdNumberOfTradingDaysOfVolumeWeightedAveragePriceTakenForSubscriptionPriceCalculation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of trading days of volume weighted average price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancialInstrumentDerivativesCallOptionStrikePrice" xlink:label="iva_FinancialInstrumentDerivativesCallOptionStrikePrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancialInstrumentDerivativesCallOptionStrikePrice" xlink:to="iva_FinancialInstrumentDerivativesCallOptionStrikePrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancialInstrumentDerivativesCallOptionStrikePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Strike price or exercise price of a derivative financial instrument that gives the holder the right, but not the obligation, to purchase or sell an underlying asset.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancialInstrumentDerivativesCallOptionStrikePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Instrument, Derivatives, Call Option, Strike Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancialInstrumentDerivativesCallOptionStrikePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Call option strike price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancialInstrumentsDerivativesCallOptionConversionRatio" xlink:label="iva_FinancialInstrumentsDerivativesCallOptionConversionRatio" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancialInstrumentsDerivativesCallOptionConversionRatio" xlink:to="iva_FinancialInstrumentsDerivativesCallOptionConversionRatio_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancialInstrumentsDerivativesCallOptionConversionRatio_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ratio applied to the conversion of derivative instrument that gives the holder the right, but not the obligation, to purchase or sell an underlying asset.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancialInstrumentsDerivativesCallOptionConversionRatio_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Instruments, Derivatives, Call Option, Conversion Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancialInstrumentsDerivativesCallOptionConversionRatio_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Call option, conversion ratio</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancingArrangementInThreeTranches2024TrancheIiiMember" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiiMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancingArrangementInThreeTranches2024TrancheIiiMember" xlink:to="iva_FinancingArrangementInThreeTranches2024TrancheIiiMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents the 2024 Financing arrangement in three tranches, Tranche III.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing arrangement in three tranches 2024, Tranche III [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FinancingArrangementInThreeTranches2024TrancheIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche III, 2024 Financing arrangement in three tranches</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MaximumProceedsOnExerciseOfWarrants" xlink:label="iva_MaximumProceedsOnExerciseOfWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MaximumProceedsOnExerciseOfWarrants" xlink:to="iva_MaximumProceedsOnExerciseOfWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MaximumProceedsOnExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The maximum amount of proceeds that may be received on exercise of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MaximumProceedsOnExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum Proceeds on Exercise of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MaximumProceedsOnExerciseOfWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum proceeds from exercise of warrants</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives" xlink:label="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives" xlink:to="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gains (losses) on change in fair value of derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Losses on fair value variation</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdjustmentToWarrantSubscriptionPrice" xlink:label="iva_AdjustmentToWarrantSubscriptionPrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdjustmentToWarrantSubscriptionPrice" xlink:to="iva_AdjustmentToWarrantSubscriptionPrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdjustmentToWarrantSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustment to warrant subscription price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdjustmentToWarrantSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustment to warrant subscription price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ApproximateNumberOfSharesExpectedToBeIssued" xlink:label="iva_ApproximateNumberOfSharesExpectedToBeIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ApproximateNumberOfSharesExpectedToBeIssued" xlink:to="iva_ApproximateNumberOfSharesExpectedToBeIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ApproximateNumberOfSharesExpectedToBeIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Approximate number of shares expected to be issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ApproximateNumberOfSharesExpectedToBeIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Approximate number of shares expected to be issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ApproximateNumberOfSharesExpectedToBeIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of instruments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ApproximateNumberOfWarrantsExpectedToBeIssued" xlink:label="iva_ApproximateNumberOfWarrantsExpectedToBeIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ApproximateNumberOfWarrantsExpectedToBeIssued" xlink:to="iva_ApproximateNumberOfWarrantsExpectedToBeIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ApproximateNumberOfWarrantsExpectedToBeIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Approximate number of warrants expected to be issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ApproximateNumberOfWarrantsExpectedToBeIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Approximate number of warrants expected to be issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ApproximateNumberOfWarrantsExpectedToBeIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of instruments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSharesIssuedPerInstrument" xlink:label="iva_NumberOfSharesIssuedPerInstrument" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSharesIssuedPerInstrument" xlink:to="iva_NumberOfSharesIssuedPerInstrument_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSharesIssuedPerInstrument_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares issued per instrument.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSharesIssuedPerInstrument_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Shares Issued per Instrument</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfSharesIssuedPerInstrument_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares per instruments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsSharePrice" xlink:label="iva_IfrsSharePrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsSharePrice" xlink:to="iva_IfrsSharePrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsSharePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Price of a single share of a number of saleable stocks of a company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsSharePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Share price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsSharePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SharesMaturityTerm" xlink:label="iva_SharesMaturityTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SharesMaturityTerm" xlink:to="iva_SharesMaturityTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SharesMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity term of shares used to calculate fair value of shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SharesMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares, Maturity Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SharesMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FairValueOfPotentialShares" xlink:label="iva_FairValueOfPotentialShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FairValueOfPotentialShares" xlink:to="iva_FairValueOfPotentialShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FairValueOfPotentialShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of potential shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FairValueOfPotentialShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of potential shares</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FairValueOfPotentialWarrants" xlink:label="iva_FairValueOfPotentialWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FairValueOfPotentialWarrants" xlink:to="iva_FairValueOfPotentialWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FairValueOfPotentialWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of potential warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FairValueOfPotentialWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of potential warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FairValueOfEquityInstruments" xlink:label="iva_FairValueOfEquityInstruments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FairValueOfEquityInstruments" xlink:to="iva_FairValueOfEquityInstruments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FairValueOfEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of equity instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FairValueOfEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Of Equity Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FairValueOfEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value (in millions of euros)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SharePerUnitFairValue" xlink:label="iva_SharePerUnitFairValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SharePerUnitFairValue" xlink:to="iva_SharePerUnitFairValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SharePerUnitFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The fair value per unit of shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SharePerUnitFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share, Per Unit fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SharePerUnitFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unit fair value</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInLeaseLiabilities" xlink:label="iva_IncreaseDecreaseInLeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInLeaseLiabilities" xlink:to="iva_IncreaseDecreaseInLeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in lease liabilities during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in Lease Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in lease liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseInLeaseLiabilitiesThroughNewLeases" xlink:label="iva_IncreaseInLeaseLiabilitiesThroughNewLeases" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseInLeaseLiabilitiesThroughNewLeases" xlink:to="iva_IncreaseInLeaseLiabilitiesThroughNewLeases_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseInLeaseLiabilitiesThroughNewLeases_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in lease liabilities through new leases.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseInLeaseLiabilitiesThroughNewLeases_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in lease liabilities through new leases</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DecreaseInLeaseLiabilitiesThroughRepayments" xlink:label="iva_DecreaseInLeaseLiabilitiesThroughRepayments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DecreaseInLeaseLiabilitiesThroughRepayments" xlink:to="iva_DecreaseInLeaseLiabilitiesThroughRepayments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DecreaseInLeaseLiabilitiesThroughRepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in lease liabilities through repayments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DecreaseInLeaseLiabilitiesThroughRepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in lease liabilities through repayments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LeaseTerm" xlink:label="iva_LeaseTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LeaseTerm" xlink:to="iva_LeaseTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LeaseTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease term.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LeaseTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LeaseTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease term</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscountRateMeasurementInputMember" xlink:label="ifrs-full_DiscountRateMeasurementInputMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DiscountRateMeasurementInputMember" xlink:to="ifrs-full_DiscountRateMeasurementInputMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DiscountRateMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate, measurement input [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DiscountRateMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ProbabilityOfSuccessMeasurementInputMember" xlink:label="iva_ProbabilityOfSuccessMeasurementInputMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ProbabilityOfSuccessMeasurementInputMember" xlink:to="iva_ProbabilityOfSuccessMeasurementInputMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ProbabilityOfSuccessMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for a probability of success used as a measurement input.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ProbabilityOfSuccessMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Probability Of Success, Measurement Input [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ProbabilityOfSuccessMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Probability of success</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltyCertificatesEffectiveInterestRate" xlink:label="iva_RoyaltyCertificatesEffectiveInterestRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RoyaltyCertificatesEffectiveInterestRate" xlink:to="iva_RoyaltyCertificatesEffectiveInterestRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltyCertificatesEffectiveInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Effective interest rate on royalty certificates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RoyaltyCertificatesEffectiveInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificates, Effective Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RoyaltyCertificatesEffectiveInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty certificates, effective interest rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsForDebtIssueCosts" xlink:label="ifrs-full_PaymentsForDebtIssueCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PaymentsForDebtIssueCosts" xlink:to="ifrs-full_PaymentsForDebtIssueCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PaymentsForDebtIssueCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments for debt issue costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantUnobservableInputLiabilities" xlink:label="ifrs-full_SignificantUnobservableInputLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantUnobservableInputLiabilities" xlink:to="ifrs-full_SignificantUnobservableInputLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Significant unobservable input, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SignificantUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Significant unobservable input, liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows" xlink:label="ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows" xlink:to="ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-derivative financial liabilities, undiscounted cash flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-derivative financial liabilities, undiscounted cash flows</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval" xlink:label="iva_PercentageOfPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval" xlink:to="iva_PercentageOfPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The reasonably possible percentage of the increase (decrease) in the probability of success of regulatory approval used to determine the fair value of the financial instrument.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Of possible Increase (Decrease) In Probability Of Success Of Regulatory Approval</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PercentageOfPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Change in probability of success</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval" xlink:to="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in a financial instrument as a result of an increase (decrease) in a probability of success of regulatory approval that was reasonably possible at the end of the reporting period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) In Financial Instrument Due To Reasonably Possible Increase (Decrease) In Probability Of Success Of Regulatory Approval</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInFinancialInstrumentDueToReasonablyPossibleIncreaseDecreaseInProbabilityOfSuccessOfRegulatoryApproval_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortized cost</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleIncreaseInDesignatedRiskComponent" xlink:label="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleIncreaseInDesignatedRiskComponent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleIncreaseInDesignatedRiskComponent" xlink:to="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleIncreaseInDesignatedRiskComponent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleIncreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value of financial liability due to reasonably possible increase in designated risk component.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleIncreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value of financial liability due to reasonably possible increase in designated risk component</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleDecreaseInDesignatedRiskComponent" xlink:label="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleDecreaseInDesignatedRiskComponent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleDecreaseInDesignatedRiskComponent" xlink:to="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleDecreaseInDesignatedRiskComponent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value of financial liability due to reasonably possible decrease in designated risk component.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInFairValueOfFinancialLiabilityDueToReasonablyPossibleDecreaseInDesignatedRiskComponent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value of financial liability due to reasonably possible decrease in designated risk component</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherProvisionsTable" xlink:label="ifrs-full_DisclosureOfOtherProvisionsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherProvisionsTable" xlink:to="ifrs-full_DisclosureOfOtherProvisionsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherProvisionsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other provisions [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherProvisionsLineItems" xlink:label="ifrs-full_DisclosureOfOtherProvisionsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherProvisionsLineItems" xlink:to="ifrs-full_DisclosureOfOtherProvisionsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherProvisionsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other provisions [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfOtherProvisionsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating income and expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherShortTermProvisionsAbstract" xlink:label="iva_OtherShortTermProvisionsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherShortTermProvisionsAbstract" xlink:to="iva_OtherShortTermProvisionsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherShortTermProvisionsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherShortTermProvisionsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short term provisions</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdditionalProvisionsOtherShortTermProvisions" xlink:label="iva_AdditionalProvisionsOtherShortTermProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdditionalProvisionsOtherShortTermProvisions" xlink:to="iva_AdditionalProvisionsOtherShortTermProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdditionalProvisionsOtherShortTermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of additional other provisions made, classified as short-term.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdditionalProvisionsOtherShortTermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional Provisions, Other Short-Term Provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AdditionalProvisionsOtherShortTermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_UsedProvisionsReversedOtherShortTermProvisions" xlink:label="iva_UsedProvisionsReversedOtherShortTermProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_UsedProvisionsReversedOtherShortTermProvisions" xlink:to="iva_UsedProvisionsReversedOtherShortTermProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_UsedProvisionsReversedOtherShortTermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Used provisions reversed, other short term provisions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_UsedProvisionsReversedOtherShortTermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Used provisions reversed, other short term provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_UsedProvisionsReversedOtherShortTermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reversals used</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherProvisionsAbstract" xlink:label="ifrs-full_OtherProvisionsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherProvisionsAbstract" xlink:to="ifrs-full_OtherProvisionsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherProvisionsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other provisions [abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherProvisions" xlink:label="ifrs-full_OtherProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherProvisions" xlink:to="ifrs-full_OtherProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_OtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other provisions at end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_OtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other provisions at beginning of period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionalProvisionsOtherProvisions" xlink:label="ifrs-full_AdditionalProvisionsOtherProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdditionalProvisionsOtherProvisions" xlink:to="ifrs-full_AdditionalProvisionsOtherProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdditionalProvisionsOtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional provisions, other provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdditionalProvisionsOtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProvisionUsedOtherProvisions" xlink:label="ifrs-full_ProvisionUsedOtherProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProvisionUsedOtherProvisions" xlink:to="ifrs-full_ProvisionUsedOtherProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProvisionUsedOtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provision used, other provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ProvisionUsedOtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reversals used</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestructuringProvision" xlink:label="ifrs-full_RestructuringProvision" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RestructuringProvision" xlink:to="ifrs-full_RestructuringProvision_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RestructuringProvision_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restructuring provision</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RestructuringProvision_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of provision for restructuring</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfRetirementAge2019" xlink:label="ifrs-full_ActuarialAssumptionOfRetirementAge2019" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ActuarialAssumptionOfRetirementAge2019" xlink:to="ifrs-full_ActuarialAssumptionOfRetirementAge2019_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ActuarialAssumptionOfRetirementAge2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial assumption of retirement age</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ActuarialAssumptionOfRetirementAge2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retirement age</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfRatesOfPayrollTaxes" xlink:label="iva_ActuarialAssumptionOfRatesOfPayrollTaxes" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ActuarialAssumptionOfRatesOfPayrollTaxes" xlink:to="iva_ActuarialAssumptionOfRatesOfPayrollTaxes_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfRatesOfPayrollTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The expected rate of payroll taxes used as a significant actuarial assumption to determine the present value of a defined benefit obligation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfRatesOfPayrollTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Rates Of Payroll Taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfRatesOfPayrollTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payroll taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases" xlink:label="ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases" xlink:to="ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial assumption of expected rates of salary increases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Salary growth rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfDiscountRates" xlink:label="ifrs-full_ActuarialAssumptionOfDiscountRates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ActuarialAssumptionOfDiscountRates" xlink:to="ifrs-full_ActuarialAssumptionOfDiscountRates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ActuarialAssumptionOfDiscountRates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial assumption of discount rates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ActuarialAssumptionOfDiscountRates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_InvestmentThresholdMinimumMaturityTerm" xlink:label="iva_InvestmentThresholdMinimumMaturityTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_InvestmentThresholdMinimumMaturityTerm" xlink:to="iva_InvestmentThresholdMinimumMaturityTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_InvestmentThresholdMinimumMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Threshold minimum maturity term of the investments, considered for determination of discount rate for actuarial assumptions used to determine the present value of a defined benefit obligation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_InvestmentThresholdMinimumMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Investment, Threshold Minimum Maturity Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_InvestmentThresholdMinimumMaturityTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Threshold minimum maturity term for Eurozone AA rated corporate bonds</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansTable" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDefinedBenefitPlansTable" xlink:to="ifrs-full_DisclosureOfDefinedBenefitPlansTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of defined benefit plans [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xlink:to="ifrs-full_DisclosureOfDefinedBenefitPlansLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of defined benefit plans [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDefinedBenefitPlansLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DefinedBenefitObligationAtPresentValue" xlink:label="ifrs-full_DefinedBenefitObligationAtPresentValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DefinedBenefitObligationAtPresentValue" xlink:to="ifrs-full_DefinedBenefitObligationAtPresentValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DefinedBenefitObligationAtPresentValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Defined benefit obligation, at present value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DefinedBenefitObligationAtPresentValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Benefit obligation at December 31</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DefinedBenefitObligationAtPresentValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:label="ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:to="ifrs-full_LiabilityAssetOfDefinedBenefitPlans_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LiabilityAssetOfDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net defined benefit liability (asset)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:label="ifrs-full_LiabilityAssetOfDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provision at end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:label="ifrs-full_LiabilityAssetOfDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provision at beginning of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LiabilityAssetOfDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total obligation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset" xlink:to="ifrs-full_IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in net defined benefit liability (asset) resulting from other changes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other changes (IFRIC - IAS 19)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromExpenseIncomeInProfitOrLoss" xlink:label="ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromExpenseIncomeInProfitOrLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromExpenseIncomeInProfitOrLoss" xlink:to="ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromExpenseIncomeInProfitOrLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromExpenseIncomeInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in net defined benefit liability (asset) resulting from expense (income) in profit or loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_IncreaseDecreaseInNetDefinedBenefitLiabilityAssetResultingFromExpenseIncomeInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gain / (Expense) for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset" xlink:label="ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset" xlink:to="ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial gains or losses recognized in other comprehensive income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentServiceCostDefinedBenefitPlans" xlink:label="ifrs-full_CurrentServiceCostDefinedBenefitPlans" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentServiceCostDefinedBenefitPlans" xlink:to="ifrs-full_CurrentServiceCostDefinedBenefitPlans_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentServiceCostDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current service cost, defined benefit plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_CurrentServiceCostDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Service cost for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpenseDefinedBenefitPlans" xlink:label="ifrs-full_InterestExpenseDefinedBenefitPlans" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestExpenseDefinedBenefitPlans" xlink:to="ifrs-full_InterestExpenseDefinedBenefitPlans_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestExpenseDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest expense, defined benefit plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_InterestExpenseDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest cost for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastServiceCostDefinedBenefitPlans" xlink:label="ifrs-full_PastServiceCostDefinedBenefitPlans" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PastServiceCostDefinedBenefitPlans" xlink:to="ifrs-full_PastServiceCostDefinedBenefitPlans_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PastServiceCostDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Past service cost, defined benefit plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_PastServiceCostDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Past service costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastServiceCostAndLossesGainsArisingFromSettlementsDefinedBenefitPlans" xlink:label="ifrs-full_PastServiceCostAndLossesGainsArisingFromSettlementsDefinedBenefitPlans" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PastServiceCostAndLossesGainsArisingFromSettlementsDefinedBenefitPlans" xlink:to="ifrs-full_PastServiceCostAndLossesGainsArisingFromSettlementsDefinedBenefitPlans_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PastServiceCostAndLossesGainsArisingFromSettlementsDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Past service cost and losses (gains) arising from settlements, defined benefit plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_PastServiceCostAndLossesGainsArisingFromSettlementsDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Benefits for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:label="ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:to="ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Post-employment benefit expense in profit or loss, defined benefit plans</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetOfTaxDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Difference between expected and actual performance</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetOfTaxDefinedBenefitPlans" xlink:label="ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetOfTaxDefinedBenefitPlans" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetOfTaxDefinedBenefitPlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Changes in actuarial assumptions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable" xlink:label="ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionsAxis" xlink:label="ifrs-full_ActuarialAssumptionsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionsDomain" xlink:label="ifrs-full_ActuarialAssumptionsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:label="ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:to="ifrs-full_ActuarialAssumptionOfDiscountRatesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ActuarialAssumptionOfDiscountRatesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial assumption of discount rates [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ActuarialAssumptionOfDiscountRatesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt3.70PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.70PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ActuarialAssumptionOfDiscountRatesAt3.70PercentMember" xlink:to="iva_ActuarialAssumptionOfDiscountRatesAt3.70PercentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.70PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 3.70% used as actuarial assumptions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.70PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 3.70%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt3.95PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.95PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ActuarialAssumptionOfDiscountRatesAt3.95PercentMember" xlink:to="iva_ActuarialAssumptionOfDiscountRatesAt3.95PercentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.95PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 3.95% used as actuarial assumptions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.95PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 3.95%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt4.20PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt4.20PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ActuarialAssumptionOfDiscountRatesAt4.20PercentMember" xlink:to="iva_ActuarialAssumptionOfDiscountRatesAt4.20PercentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt4.20PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 4.20% used as actuarial assumptions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt4.20PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Discount Rates At 4.20 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt4.20PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 4.20%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt3.15PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.15PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ActuarialAssumptionOfDiscountRatesAt3.15PercentMember" xlink:to="iva_ActuarialAssumptionOfDiscountRatesAt3.15PercentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.15PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 3.15% used as actuarial assumptions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.15PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Discount Rates At 3.15 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.15PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 3.15%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt3.40PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.40PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ActuarialAssumptionOfDiscountRatesAt3.40PercentMember" xlink:to="iva_ActuarialAssumptionOfDiscountRatesAt3.40PercentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.40PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 3.40% used as actuarial assumptions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.40PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Discount Rates At 3.40 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.40PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 3.40%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt3.65PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.65PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.65PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 3.65% used as actuarial assumptions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.65PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Discount Rates At 3.65 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.65PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 3.65%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt2.95PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt2.95PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt2.95PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 2.95% used as actuarial assumptions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt2.95PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Discount Rates At 2.95 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt2.95PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 2.95%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt3.20PercentMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.20PercentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.20PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 3.20% used as actuarial assumptions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.20PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Discount Rates At 3.20 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.20PercentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 3.20%</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ActuarialAssumptionOfDiscountRatesAt3.45PercentOneMember" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.45PercentOneMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ActuarialAssumptionOfDiscountRatesAt3.45PercentOneMember" xlink:to="iva_ActuarialAssumptionOfDiscountRatesAt3.45PercentOneMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.45PercentOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for the discount rates of 3.45% used as actuarial assumptions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.45PercentOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Actuarial Assumption Of Discount Rates At 3.45 Percent one [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ActuarialAssumptionOfDiscountRatesAt3.45PercentOneMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate at 3.45%</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems" xlink:label="ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems" xlink:to="ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of sensitivity analysis for actuarial assumptions [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PercentageOfReasonablyPossibleIncreaseOrDecreaseInActuarialAssumption" xlink:label="iva_PercentageOfReasonablyPossibleIncreaseOrDecreaseInActuarialAssumption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PercentageOfReasonablyPossibleIncreaseOrDecreaseInActuarialAssumption" xlink:to="iva_PercentageOfReasonablyPossibleIncreaseOrDecreaseInActuarialAssumption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PercentageOfReasonablyPossibleIncreaseOrDecreaseInActuarialAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reasonably possible increase or decrease in actuarial assumption</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PercentageOfReasonablyPossibleIncreaseOrDecreaseInActuarialAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reasonably possible increase or decrease in actuarial assumption</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumptionPercent" xlink:label="iva_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumptionPercent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumptionPercent" xlink:to="iva_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumptionPercent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumptionPercent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumptionPercent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Defined Benefit Obligation Due To Reasonably Possible Increase In Actuarial Assumption, Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumptionPercent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption (as a percent)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_BenefitObligationPercentage" xlink:label="iva_BenefitObligationPercentage" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_BenefitObligationPercentage" xlink:to="iva_BenefitObligationPercentage_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_BenefitObligationPercentage_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of benefit obligation percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_BenefitObligationPercentage_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Benefit Obligation Percentage</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:label="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:to="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of non-adjusting events after reporting period [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:label="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:to="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of non-adjusting events after reporting period [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current and non-current liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EmployeeRelatedPayables" xlink:label="iva_EmployeeRelatedPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EmployeeRelatedPayables" xlink:to="iva_EmployeeRelatedPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EmployeeRelatedPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the amount pertaining to employee related payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EmployeeRelatedPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee related payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_EmployeeRelatedPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee-related payables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AccruedPayrollAndOtherEmployeeRelatedTaxes" xlink:label="iva_AccruedPayrollAndOtherEmployeeRelatedTaxes" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AccruedPayrollAndOtherEmployeeRelatedTaxes" xlink:to="iva_AccruedPayrollAndOtherEmployeeRelatedTaxes_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AccruedPayrollAndOtherEmployeeRelatedTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the amount pertaining to accrued payroll and other employee related taxes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AccruedPayrollAndOtherEmployeeRelatedTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued payroll and other employeerelated taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AccruedPayrollAndOtherEmployeeRelatedTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued payroll and other employee-related taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentValueAddedTaxPayables" xlink:label="ifrs-full_CurrentValueAddedTaxPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentValueAddedTaxPayables" xlink:to="ifrs-full_CurrentValueAddedTaxPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentValueAddedTaxPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current value added tax payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentValueAddedTaxPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">VAT payables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherAccruedTaxesAndEmployeeRelatedExpenses" xlink:label="iva_OtherAccruedTaxesAndEmployeeRelatedExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherAccruedTaxesAndEmployeeRelatedExpenses" xlink:to="iva_OtherAccruedTaxesAndEmployeeRelatedExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherAccruedTaxesAndEmployeeRelatedExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of accrued taxes and employee related expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherAccruedTaxesAndEmployeeRelatedExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Accrued taxes And Employee Related Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherAccruedTaxesAndEmployeeRelatedExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other accrued taxes and employee-related expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentPayables" xlink:label="ifrs-full_OtherCurrentPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherCurrentPayables" xlink:to="ifrs-full_OtherCurrentPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherCurrentPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherCurrentPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other miscellaneous payables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TradePayableAndOtherCurrentLiabilitiesTable" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TradePayableAndOtherCurrentLiabilitiesTable" xlink:to="iva_TradePayableAndOtherCurrentLiabilitiesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade Payable And Other Current Liabilities [Table]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TradePayableAndOtherCurrentLiabilitiesLineItems" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TradePayableAndOtherCurrentLiabilitiesLineItems" xlink:to="iva_TradePayableAndOtherCurrentLiabilitiesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade Payable And Other Current Liabilities [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current and non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_TradePayableAndOtherCurrentLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables and short-term contract liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsIncreaseDecreaseInOtherCurrentLiabilities" xlink:label="iva_IfrsIncreaseDecreaseInOtherCurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsIncreaseDecreaseInOtherCurrentLiabilities" xlink:to="iva_IfrsIncreaseDecreaseInOtherCurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsIncreaseDecreaseInOtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in other current liabilities of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsIncreaseDecreaseInOtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Increase (Decrease) In Other Current Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsIncreaseDecreaseInOtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in other current liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsIncreaseDecreaseInEmployeeRelatedPayables" xlink:label="iva_IfrsIncreaseDecreaseInEmployeeRelatedPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsIncreaseDecreaseInEmployeeRelatedPayables" xlink:to="iva_IfrsIncreaseDecreaseInEmployeeRelatedPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsIncreaseDecreaseInEmployeeRelatedPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in employee related payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsIncreaseDecreaseInEmployeeRelatedPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Increase (Decrease) In Employee Related Payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsIncreaseDecreaseInEmployeeRelatedPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in employee-related payables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInOtherMiscellaneousCurrentLiabilities" xlink:label="iva_IncreaseDecreaseInOtherMiscellaneousCurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInOtherMiscellaneousCurrentLiabilities" xlink:to="iva_IncreaseDecreaseInOtherMiscellaneousCurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInOtherMiscellaneousCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in other miscellaneous current liabilities of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInOtherMiscellaneousCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Other Miscellaneous Current Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInOtherMiscellaneousCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in other miscellaneous liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInSalesTaxLiabilities" xlink:label="iva_IncreaseDecreaseInSalesTaxLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInSalesTaxLiabilities" xlink:to="iva_IncreaseDecreaseInSalesTaxLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInSalesTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in sales tax liabilities of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInSalesTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Sales Tax Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInSalesTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in VAT payable</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAgreementPayablesForCreditNotesIssued" xlink:label="iva_LicenseAgreementPayablesForCreditNotesIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAgreementPayablesForCreditNotesIssued" xlink:to="iva_LicenseAgreementPayablesForCreditNotesIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAgreementPayablesForCreditNotesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License agreement, payables for credit notes issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAgreementPayablesForCreditNotesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License agreement, payables for credit notes issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAgreementPayablesForCreditNotesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License agreement, payables for credit notes issued</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAgreementIssueOfCreditNotes" xlink:label="iva_LicenseAgreementIssueOfCreditNotes" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAgreementIssueOfCreditNotes" xlink:to="iva_LicenseAgreementIssueOfCreditNotes_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAgreementIssueOfCreditNotes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License agreement, issue of credit notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAgreementIssueOfCreditNotes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License agreement, issue of credit notes</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LiabilityForPayrollTaxesRelatingToTaxesOnShareBasedPayment" xlink:label="iva_LiabilityForPayrollTaxesRelatingToTaxesOnShareBasedPayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LiabilityForPayrollTaxesRelatingToTaxesOnShareBasedPayment" xlink:to="iva_LiabilityForPayrollTaxesRelatingToTaxesOnShareBasedPayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LiabilityForPayrollTaxesRelatingToTaxesOnShareBasedPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liability for payroll taxes relating to taxes on share-based payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LiabilityForPayrollTaxesRelatingToTaxesOnShareBasedPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liability for payroll taxes relating to taxes on share-based payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TradePayablesAndOtherCurrentLiabilities" xlink:label="iva_TradePayablesAndOtherCurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TradePayablesAndOtherCurrentLiabilities" xlink:to="iva_TradePayablesAndOtherCurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TradePayablesAndOtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of trade payables and other current liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TradePayablesAndOtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade Payables And Other Current Liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="iva_TradePayablesAndOtherCurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables and other current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanOneMonthMember" xlink:label="ifrs-full_NotLaterThanOneMonthMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NotLaterThanOneMonthMember" xlink:to="ifrs-full_NotLaterThanOneMonthMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NotLaterThanOneMonthMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Not later than one month [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NotLaterThanOneMonthMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Due in 30 days</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:label="ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:to="ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Later than one month and not later than two months [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Due in 30-60 days</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccrualsClassifiedAsCurrent" xlink:label="ifrs-full_AccrualsClassifiedAsCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AccrualsClassifiedAsCurrent" xlink:to="ifrs-full_AccrualsClassifiedAsCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AccrualsClassifiedAsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accruals classified as current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AccrualsClassifiedAsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AccrualsClassifiedAsCurrentRelatingToScientificProjects" xlink:label="iva_AccrualsClassifiedAsCurrentRelatingToScientificProjects" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AccrualsClassifiedAsCurrentRelatingToScientificProjects" xlink:to="iva_AccrualsClassifiedAsCurrentRelatingToScientificProjects_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AccrualsClassifiedAsCurrentRelatingToScientificProjects_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of accruals classified as current relating to scientific projects</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AccrualsClassifiedAsCurrentRelatingToScientificProjects_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accruals classified as current relating to scientific projects</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AccrualsClassifiedAsCurrentRelatingToScientificProjects_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued liabilities relating to scientific projects</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInTradeAccountsPayable" xlink:label="iva_IncreaseDecreaseInTradeAccountsPayable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInTradeAccountsPayable" xlink:to="iva_IncreaseDecreaseInTradeAccountsPayable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInTradeAccountsPayable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in trade accounts payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInTradeAccountsPayable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in trade accounts payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInTradeAccountsPayable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in trade accounts payable</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LongTermDepositAccountsMember" xlink:label="iva_LongTermDepositAccountsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LongTermDepositAccountsMember" xlink:to="iva_LongTermDepositAccountsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LongTermDepositAccountsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for long term deposit accounts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LongTermDepositAccountsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term deposit accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LongTermDepositAccountsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term deposit accounts</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LongTermSecurityDepositsMember" xlink:label="iva_LongTermSecurityDepositsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LongTermSecurityDepositsMember" xlink:to="iva_LongTermSecurityDepositsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LongTermSecurityDepositsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for long-term security deposits.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LongTermSecurityDepositsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term security deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LongTermSecurityDepositsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Long-term security deposits</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AdvancePaymentMember" xlink:label="iva_AdvancePaymentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AdvancePaymentMember" xlink:to="iva_AdvancePaymentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AdvancePaymentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for advance payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AdvancePaymentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Advance payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AdvancePaymentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Advance payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AccruedIncomeMember" xlink:label="iva_AccruedIncomeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AccruedIncomeMember" xlink:to="iva_AccruedIncomeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AccruedIncomeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for accrued income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AccruedIncomeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current accrued income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AccruedIncomeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current accrued income</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ShortTermDepositAccountsMember" xlink:label="iva_ShortTermDepositAccountsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ShortTermDepositAccountsMember" xlink:to="iva_ShortTermDepositAccountsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ShortTermDepositAccountsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for short-term deposit accounts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ShortTermDepositAccountsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shortterm deposit accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ShortTermDepositAccountsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term deposit accounts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeReceivablesMember" xlink:label="ifrs-full_TradeReceivablesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeReceivablesMember" xlink:to="ifrs-full_TradeReceivablesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeReceivablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TradeReceivablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherReceivablesMember" xlink:label="iva_OtherReceivablesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherReceivablesMember" xlink:to="iva_OtherReceivablesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherReceivablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for other receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherReceivablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherReceivablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other receivables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsCashAndCashEquivalentsMember" xlink:label="iva_IfrsCashAndCashEquivalentsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsCashAndCashEquivalentsMember" xlink:to="iva_IfrsCashAndCashEquivalentsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsCashAndCashEquivalentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for cash and cash equivalents.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsCashAndCashEquivalentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and Cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsCashAndCashEquivalentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsAxis" xlink:label="ifrs-full_CategoriesOfFinancialAssetsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfFinancialAssetsAxis" xlink:to="ifrs-full_CategoriesOfFinancialAssetsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfFinancialAssetsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of financial assets [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:label="ifrs-full_CategoriesOfFinancialAssetsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:to="ifrs-full_CategoriesOfFinancialAssetsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfFinancialAssetsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of financial assets [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:label="ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:to="ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets at amortised cost, category [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets carried at amortized cost</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DerivativeInstrumentsMember" xlink:label="iva_DerivativeInstrumentsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DerivativeInstrumentsMember" xlink:to="iva_DerivativeInstrumentsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DerivativeInstrumentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for derivative instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DerivativeInstrumentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivative instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_DerivativeInstrumentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivative instruments</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltyCertificatesLiabilitiesMember" xlink:label="iva_RoyaltyCertificatesLiabilitiesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RoyaltyCertificatesLiabilitiesMember" xlink:to="iva_RoyaltyCertificatesLiabilitiesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltyCertificatesLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for royalty certificates liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RoyaltyCertificatesLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty Certificates Liabilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_RoyaltyCertificatesLiabilitiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalty certificates liabilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TradePayablesMember" xlink:label="iva_TradePayablesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TradePayablesMember" xlink:to="iva_TradePayablesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TradePayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for trade payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TradePayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TradePayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherMiscellaneousPayablesMember" xlink:label="iva_OtherMiscellaneousPayablesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherMiscellaneousPayablesMember" xlink:to="iva_OtherMiscellaneousPayablesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherMiscellaneousPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for other miscellaneous payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherMiscellaneousPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other miscellaneous payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherMiscellaneousPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other miscellaneous payables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember" xlink:label="ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember" xlink:to="ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities at amortised cost, category [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities carried at amortized cost</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssets" xlink:label="ifrs-full_FinancialAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialAssets" xlink:to="ifrs-full_FinancialAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValue" xlink:label="ifrs-full_FinancialAssetsAtFairValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialAssetsAtFairValue" xlink:to="ifrs-full_FinancialAssetsAtFairValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialAssetsAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets, at fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinancialAssetsAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets, at fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_FinancialAssetsAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Assets, fair value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue" xlink:label="ifrs-full_Revenue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Revenue" xlink:to="ifrs-full_Revenue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Revenue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_Revenue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total revenues</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CurrentTaxCreditResearchIncome" xlink:label="iva_CurrentTaxCreditResearchIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CurrentTaxCreditResearchIncome" xlink:to="iva_CurrentTaxCreditResearchIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CurrentTaxCreditResearchIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of income from tax credit research.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CurrentTaxCreditResearchIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current Tax Credit Research Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_CurrentTaxCreditResearchIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CIR</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SubsidiesIncome" xlink:label="iva_SubsidiesIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SubsidiesIncome" xlink:to="iva_SubsidiesIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SubsidiesIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of income from subsidies.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SubsidiesIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidies income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SubsidiesIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidies</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsOtherOperatingIncome" xlink:label="iva_IfrsOtherOperatingIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsOtherOperatingIncome" xlink:to="iva_IfrsOtherOperatingIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsOtherOperatingIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsOtherOperatingIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Other Operating Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsOtherOperatingIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TransferOfKnowHowMember" xlink:label="iva_TransferOfKnowHowMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TransferOfKnowHowMember" xlink:to="iva_TransferOfKnowHowMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TransferOfKnowHowMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The member represents transfer of know-how.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TransferOfKnowHowMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfer of know-how [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TransferOfKnowHowMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfer of know-how</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RoyaltiesOnCommercialSalesMember" xlink:label="iva_RoyaltiesOnCommercialSalesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RoyaltiesOnCommercialSalesMember" xlink:to="iva_RoyaltiesOnCommercialSalesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RoyaltiesOnCommercialSalesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for royalties on commercial sales.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RoyaltiesOnCommercialSalesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Royalties on commercial sales</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ProceedsFromLicensingArrangementsAfterDeductionOfWithholdingTaxes" xlink:label="iva_ProceedsFromLicensingArrangementsAfterDeductionOfWithholdingTaxes" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ProceedsFromLicensingArrangementsAfterDeductionOfWithholdingTaxes" xlink:to="iva_ProceedsFromLicensingArrangementsAfterDeductionOfWithholdingTaxes_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ProceedsFromLicensingArrangementsAfterDeductionOfWithholdingTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount paid on licensing arrangements after deduction of withholding taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ProceedsFromLicensingArrangementsAfterDeductionOfWithholdingTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds From Licensing Arrangements after Deduction of Withholding Taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ProceedsFromLicensingArrangementsAfterDeductionOfWithholdingTaxes_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount received on licensing arrangements after deduction of withholding taxes</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementNumberOfCreditNotesIssuedInMilestones" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfCreditNotesIssuedInMilestones" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementNumberOfCreditNotesIssuedInMilestones" xlink:to="iva_LicenseAndCollaborationAgreementNumberOfCreditNotesIssuedInMilestones_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfCreditNotesIssuedInMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of credit notes issued in the license and collaboration agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfCreditNotesIssuedInMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement, Number Of Credit Notes Issued in Milestones</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfCreditNotesIssuedInMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of credit notes</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementCreditNotesIssuedAndRecognizedAsReductionInTradeReceivables" xlink:label="iva_LicenseAndCollaborationAgreementCreditNotesIssuedAndRecognizedAsReductionInTradeReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementCreditNotesIssuedAndRecognizedAsReductionInTradeReceivables" xlink:to="iva_LicenseAndCollaborationAgreementCreditNotesIssuedAndRecognizedAsReductionInTradeReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementCreditNotesIssuedAndRecognizedAsReductionInTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Value of credit note issued and recognized as reduction in trade receivables as of  the reporting date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementCreditNotesIssuedAndRecognizedAsReductionInTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement, Credit Notes Issued And Recognized As Reduction In Trade Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementCreditNotesIssuedAndRecognizedAsReductionInTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reduction to the trade receivables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfDevelopmentRegulatoryAndNewMilestonePaymentsInContract" xlink:label="iva_NumberOfDevelopmentRegulatoryAndNewMilestonePaymentsInContract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfDevelopmentRegulatoryAndNewMilestonePaymentsInContract" xlink:to="iva_NumberOfDevelopmentRegulatoryAndNewMilestonePaymentsInContract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfDevelopmentRegulatoryAndNewMilestonePaymentsInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of development, regulatory and new milestone payments in contract.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfDevelopmentRegulatoryAndNewMilestonePaymentsInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of development, regulatory and new milestone payments in contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfDevelopmentRegulatoryAndNewMilestonePaymentsInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of development, regulatory and new milestone payments in contract</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfCreditNotesToBeIssuedByCounterpartyInContract" xlink:label="iva_NumberOfCreditNotesToBeIssuedByCounterpartyInContract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfCreditNotesToBeIssuedByCounterpartyInContract" xlink:to="iva_NumberOfCreditNotesToBeIssuedByCounterpartyInContract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfCreditNotesToBeIssuedByCounterpartyInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of credit notes to be issued by counterparty in contract.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfCreditNotesToBeIssuedByCounterpartyInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of credit notes to be issued by counterparty in contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfCreditNotesToBeIssuedByCounterpartyInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of credit notes to be issued by counterparty in contract</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones" xlink:to="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum additional amount receivable by the entity, upon the achievement of certain development and regulatory milestones, pursuant to licensing and collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Licensing And Collaboration Agreement, Maximum Additional Amount Receivable Upon The Achievement Of Certain Development And Regulatory Milestones</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum additional amount receivable upon the achievement of certain development and regulatory milestones</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementCreditNoteOneIssuedAsMilestonePayment" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteOneIssuedAsMilestonePayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementCreditNoteOneIssuedAsMilestonePayment" xlink:to="iva_LicenseAndCollaborationAgreementCreditNoteOneIssuedAsMilestonePayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteOneIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of credit note one issued as a milestone payment in the license and collaboration agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteOneIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement, Credit Note One Issued As Milestone Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteOneIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Credit note A issued payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementCreditNoteTwoIssuedAsMilestonePayment" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteTwoIssuedAsMilestonePayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementCreditNoteTwoIssuedAsMilestonePayment" xlink:to="iva_LicenseAndCollaborationAgreementCreditNoteTwoIssuedAsMilestonePayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteTwoIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of credit note two issued as a milestone payment in the license and collaboration agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteTwoIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement, Credit Note Two Issued As Milestone Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteTwoIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Credit note B issued payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementCreditNoteThreeIssuedAsMilestonePayment" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteThreeIssuedAsMilestonePayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementCreditNoteThreeIssuedAsMilestonePayment" xlink:to="iva_LicenseAndCollaborationAgreementCreditNoteThreeIssuedAsMilestonePayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteThreeIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of credit note three issued as a milestone payment in the license and collaboration agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteThreeIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement, Credit Note Three Issued As Milestone Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteThreeIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Credit note C issued payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementCreditNoteFourIssuedAsMilestonePayment" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteFourIssuedAsMilestonePayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementCreditNoteFourIssuedAsMilestonePayment" xlink:to="iva_LicenseAndCollaborationAgreementCreditNoteFourIssuedAsMilestonePayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteFourIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of credit note four issued as a milestone payment in the license and collaboration agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteFourIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement, Credit Note Four Issued As Milestone Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementCreditNoteFourIssuedAsMilestonePayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Credit note D issued payment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementNumberOfSuccessiveTargets" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfSuccessiveTargets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementNumberOfSuccessiveTargets" xlink:to="iva_LicenseAndCollaborationAgreementNumberOfSuccessiveTargets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfSuccessiveTargets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of successive targets to be achieved under the licensing and collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfSuccessiveTargets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement Number Of Successive Targets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfSuccessiveTargets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of successive targets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainCommercialMilestones" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainCommercialMilestones" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainCommercialMilestones" xlink:to="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainCommercialMilestones_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainCommercialMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum additional amount receivable by the entity, upon the achievement of certain commercial milestones, pursuant to licensing and collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainCommercialMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Licensing And Collaboration Agreement, Maximum Additional Amount Receivable Upon The Achievement Of Certain Commercial Milestones</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_LicensingAndCollaborationAgreementMaximumAdditionalAmountReceivableUponAchievementOfCertainCommercialMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum additional amount receivable upon the achievement of certain commercial milestones</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementMaximumPotentialRegulatoryAndCommercialMilestonePaymentsReceivable" xlink:label="iva_LicenseAndCollaborationAgreementMaximumPotentialRegulatoryAndCommercialMilestonePaymentsReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementMaximumPotentialRegulatoryAndCommercialMilestonePaymentsReceivable" xlink:to="iva_LicenseAndCollaborationAgreementMaximumPotentialRegulatoryAndCommercialMilestonePaymentsReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementMaximumPotentialRegulatoryAndCommercialMilestonePaymentsReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum potential amount of regulatory and commercial milestone payments receivable, pursuant to licensing and collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementMaximumPotentialRegulatoryAndCommercialMilestonePaymentsReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement Maximum Potential Regulatory And Commercial Milestone Payments Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementMaximumPotentialRegulatoryAndCommercialMilestonePaymentsReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum potential Regulatory and Commercial Milestone payments receivable</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementThreeCreditNotesToBeIssuedUponReceiptOfSecondTrancheOfStructuredFinancing" xlink:label="iva_LicenseAndCollaborationAgreementThreeCreditNotesToBeIssuedUponReceiptOfSecondTrancheOfStructuredFinancing" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementThreeCreditNotesToBeIssuedUponReceiptOfSecondTrancheOfStructuredFinancing" xlink:to="iva_LicenseAndCollaborationAgreementThreeCreditNotesToBeIssuedUponReceiptOfSecondTrancheOfStructuredFinancing_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementThreeCreditNotesToBeIssuedUponReceiptOfSecondTrancheOfStructuredFinancing_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of three credit notes to be issued upon receipt of second tranche of the structured financing under the terms of  license and collaboration agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementThreeCreditNotesToBeIssuedUponReceiptOfSecondTrancheOfStructuredFinancing_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement, Three Credit Notes To Be Issued Upon Receipt Of Second Tranche Of Structured Financing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementThreeCreditNotesToBeIssuedUponReceiptOfSecondTrancheOfStructuredFinancing_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xlink:label="ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xlink:to="ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction price allocated to remaining performance obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Aggregate constrained transaction price</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfPerformanceObligationsInContract" xlink:label="iva_NumberOfPerformanceObligationsInContract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfPerformanceObligationsInContract" xlink:to="iva_NumberOfPerformanceObligationsInContract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfPerformanceObligationsInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of performance obligations in contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfPerformanceObligationsInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of performance obligations in contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfPerformanceObligationsInContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of performance obligations in contract</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_LicenseAndCollaborationAgreementNumberOfDevelopmentAndRegulatoryMilestones" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfDevelopmentAndRegulatoryMilestones" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_LicenseAndCollaborationAgreementNumberOfDevelopmentAndRegulatoryMilestones" xlink:to="iva_LicenseAndCollaborationAgreementNumberOfDevelopmentAndRegulatoryMilestones_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfDevelopmentAndRegulatoryMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of development and regulatory milestones to be achieved under the licensing and collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfDevelopmentAndRegulatoryMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">License And Collaboration Agreement Number Of Development And Regulatory Milestones</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_LicenseAndCollaborationAgreementNumberOfDevelopmentAndRegulatoryMilestones_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of development and regulatory milestones</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FairValueOfOptionToAcquireSharesInAssociate" xlink:label="iva_FairValueOfOptionToAcquireSharesInAssociate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FairValueOfOptionToAcquireSharesInAssociate" xlink:to="iva_FairValueOfOptionToAcquireSharesInAssociate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FairValueOfOptionToAcquireSharesInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of option to acquire shares in associate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FairValueOfOptionToAcquireSharesInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of option to acquire shares in associate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_FairValueOfOptionToAcquireSharesInAssociate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of option to acquire shares in associate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInOtherMiscellaneousIncome" xlink:label="iva_IncreaseDecreaseInOtherMiscellaneousIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInOtherMiscellaneousIncome" xlink:to="iva_IncreaseDecreaseInOtherMiscellaneousIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInOtherMiscellaneousIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in other miscellaneous income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInOtherMiscellaneousIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in other miscellaneous income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xlink:to="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of attribution of expenses by nature to their function [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis" xlink:label="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis" xlink:to="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Attribution of expenses by nature to their function [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AttributionOfExpensesByNatureToTheirFunctionDomain" xlink:label="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionDomain" xlink:to="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AttributionOfExpensesByNatureToTheirFunctionDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Attribution of expenses by nature to their function [domain]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsResearchAndDevelopmentExpenseMember" xlink:label="iva_IfrsResearchAndDevelopmentExpenseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsResearchAndDevelopmentExpenseMember" xlink:to="iva_IfrsResearchAndDevelopmentExpenseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsResearchAndDevelopmentExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for research and development expense member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsResearchAndDevelopmentExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Research And Development Expense [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsResearchAndDevelopmentExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsSalesAndMarketingExpenseMember" xlink:label="iva_IfrsSalesAndMarketingExpenseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsSalesAndMarketingExpenseMember" xlink:to="iva_IfrsSalesAndMarketingExpenseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsSalesAndMarketingExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for sales and marketing expense member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsSalesAndMarketingExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Marketing - Business development expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_IfrsSalesAndMarketingExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Marketing - business development expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsGeneralAndAdministrativeExpenseMember" xlink:label="iva_IfrsGeneralAndAdministrativeExpenseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsGeneralAndAdministrativeExpenseMember" xlink:to="iva_IfrsGeneralAndAdministrativeExpenseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsGeneralAndAdministrativeExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for general and administrative expense member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsGeneralAndAdministrativeExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General and administrative expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems" xlink:to="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of attribution of expenses by nature to their function [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Studies" xlink:label="iva_Studies" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Studies" xlink:to="iva_Studies_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Studies_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to studies.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Studies_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Studies</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_Studies_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Studies</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EmployeeBenefitsExpense" xlink:label="ifrs-full_EmployeeBenefitsExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EmployeeBenefitsExpense" xlink:to="ifrs-full_EmployeeBenefitsExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EmployeeBenefitsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee benefits expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ifrs-full_EmployeeBenefitsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Personnel costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="ifrs-full_EmployeeBenefitsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total personnel costs</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Fees" xlink:label="iva_Fees" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Fees" xlink:to="iva_Fees_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Fees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to fees.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Fees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_Fees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fees</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DepreciationAmortizationAndProvisions" xlink:label="iva_DepreciationAmortizationAndProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DepreciationAmortizationAndProvisions" xlink:to="iva_DepreciationAmortizationAndProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DepreciationAmortizationAndProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to depreciation, amortization and provisions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DepreciationAmortizationAndProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation, amortization and provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_DepreciationAmortizationAndProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation, amortization and provisions</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SupportCosts" xlink:label="iva_SupportCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SupportCosts" xlink:to="iva_SupportCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SupportCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to support costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SupportCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Support costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_SupportCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Support costs (including taxes)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InsuranceExpense" xlink:label="ifrs-full_InsuranceExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InsuranceExpense" xlink:to="ifrs-full_InsuranceExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InsuranceExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Insurance expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_InsuranceExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Insurance</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ItSystems" xlink:label="iva_ItSystems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ItSystems" xlink:to="iva_ItSystems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ItSystems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to it systems.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ItSystems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IT Systems</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_ItSystems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IT systems</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Patents" xlink:label="iva_Patents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Patents" xlink:to="iva_Patents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Patents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to patents.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Patents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_Patents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patents</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EnergyAndLiquids" xlink:label="iva_EnergyAndLiquids" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EnergyAndLiquids" xlink:to="iva_EnergyAndLiquids_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EnergyAndLiquids_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to energy and liquids.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EnergyAndLiquids_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Energy and liquids</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_EnergyAndLiquids_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Energy and liquids</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepairsAndMaintenanceExpense" xlink:label="ifrs-full_RepairsAndMaintenanceExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RepairsAndMaintenanceExpense" xlink:to="ifrs-full_RepairsAndMaintenanceExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RepairsAndMaintenanceExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repairs and maintenance expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_RepairsAndMaintenanceExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maintenance</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_Disposables" xlink:label="iva_Disposables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_Disposables" xlink:to="iva_Disposables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_Disposables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to disposables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_Disposables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disposables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_Disposables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disposables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherOperatingExpenses" xlink:label="iva_OtherOperatingExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherOperatingExpenses" xlink:to="iva_OtherOperatingExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherOperatingExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to other operating expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherOperatingExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_OtherOperatingExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OperatingExpenseExcludingOtherOperatingIncomeExpense" xlink:label="iva_OperatingExpenseExcludingOtherOperatingIncomeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OperatingExpenseExcludingOtherOperatingIncomeExpense" xlink:to="iva_OperatingExpenseExcludingOtherOperatingIncomeExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OperatingExpenseExcludingOtherOperatingIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to amount of all operating expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OperatingExpenseExcludingOtherOperatingIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating Expense Excluding Other Operating Income Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="iva_OperatingExpenseExcludingOtherOperatingIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total operating expenses</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_InventivaS.aMember" xlink:label="iva_InventivaS.aMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_InventivaS.aMember" xlink:to="iva_InventivaS.aMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_InventivaS.aMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Inventiva S.A, U.S. affiliate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_InventivaS.aMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventiva S.A [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_InventivaS.aMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventiva S.A</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfEmployees" xlink:label="ifrs-full_NumberOfEmployees" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfEmployees" xlink:to="ifrs-full_NumberOfEmployees_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfEmployees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of employees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfEmployees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of employees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseOfRestructuringActivities" xlink:label="ifrs-full_ExpenseOfRestructuringActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ExpenseOfRestructuringActivities" xlink:to="ifrs-full_ExpenseOfRestructuringActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ExpenseOfRestructuringActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense of restructuring activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ExpenseOfRestructuringActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restructuring expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ExpenseOfRestructuringActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restructuring expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WagesAndSalaries" xlink:label="ifrs-full_WagesAndSalaries" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WagesAndSalaries" xlink:to="ifrs-full_WagesAndSalaries_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WagesAndSalaries_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Wages and salaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_WagesAndSalaries_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Wages, salaries and similar costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SocialSecurityContributions" xlink:label="ifrs-full_SocialSecurityContributions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SocialSecurityContributions" xlink:to="ifrs-full_SocialSecurityContributions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SocialSecurityContributions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Social security contributions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_SocialSecurityContributions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payroll taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss" xlink:label="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss" xlink:to="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Post-employment benefit expense in profit or loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions for retirement benefit obligations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:to="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from share-based payment transactions with employees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased compensation expense</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WithHoldingTaxRate" xlink:label="iva_WithHoldingTaxRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WithHoldingTaxRate" xlink:to="iva_WithHoldingTaxRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WithHoldingTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents the percentage of withholding tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WithHoldingTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">With Holding Tax Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WithHoldingTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Withholding tax (as a percent)</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_WithholdingTaxExpenseIncomeRecognizedInProfitOrLoss" xlink:label="iva_WithholdingTaxExpenseIncomeRecognizedInProfitOrLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_WithholdingTaxExpenseIncomeRecognizedInProfitOrLoss" xlink:to="iva_WithholdingTaxExpenseIncomeRecognizedInProfitOrLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_WithholdingTaxExpenseIncomeRecognizedInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of withholding tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_WithholdingTaxExpenseIncomeRecognizedInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Withholding Tax Expense Income Recognized In Profit Or Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_WithholdingTaxExpenseIncomeRecognizedInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Withholding taxes</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ReversalOfProvisionsForInventory" xlink:label="iva_ReversalOfProvisionsForInventory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ReversalOfProvisionsForInventory" xlink:to="iva_ReversalOfProvisionsForInventory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ReversalOfProvisionsForInventory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of reversals of provisions for the cost of inventory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ReversalOfProvisionsForInventory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reversal Of Provisions For Inventory</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ReversalOfProvisionsForInventory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Use of provisions - Inventory</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsOnDisposalsOfInvestments" xlink:label="ifrs-full_GainsOnDisposalsOfInvestments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GainsOnDisposalsOfInvestments" xlink:to="ifrs-full_GainsOnDisposalsOfInvestments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GainsOnDisposalsOfInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gains on disposals of investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_GainsOnDisposalsOfInvestments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gain on disposals of assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingIncome" xlink:label="ifrs-full_MiscellaneousOtherOperatingIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_MiscellaneousOtherOperatingIncome" xlink:to="ifrs-full_MiscellaneousOtherOperatingIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_MiscellaneousOtherOperatingIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Miscellaneous other operating income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_MiscellaneousOtherOperatingIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other operating income</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PenaltiesExpense" xlink:label="iva_PenaltiesExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PenaltiesExpense" xlink:to="iva_PenaltiesExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PenaltiesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of estimated penalties recognized in the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PenaltiesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Penalties Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_PenaltiesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Penalties</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LossesOnDisposalsOfNoncurrentAssets" xlink:label="ifrs-full_LossesOnDisposalsOfNoncurrentAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LossesOnDisposalsOfNoncurrentAssets" xlink:to="ifrs-full_LossesOnDisposalsOfNoncurrentAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LossesOnDisposalsOfNoncurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Losses on disposals of non-current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_LossesOnDisposalsOfNoncurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disposals of tangible and intangible fixed assets</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ProvisionsRestructuring" xlink:label="iva_ProvisionsRestructuring" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ProvisionsRestructuring" xlink:to="iva_ProvisionsRestructuring_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ProvisionsRestructuring_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount used (ie incurred and charged against the provision) for restructuring.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ProvisionsRestructuring_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions - Restructuring</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_ProvisionsRestructuring_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions - Restructuring</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards" xlink:label="iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards" xlink:to="iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from accelerated vesting of share-based payment awards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from accelerated vesting of share-based payment awards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based compensation expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ExpenseFromAcceleratedVestingOfShareBasedPaymentAwards_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based compensation expense</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TransactionsCosts" xlink:label="iva_TransactionsCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TransactionsCosts" xlink:to="iva_TransactionsCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TransactionsCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of transactions costs incurred during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TransactionsCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transactions Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_TransactionsCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TransactionsCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DonationsAndSubsidiesExpense" xlink:label="ifrs-full_DonationsAndSubsidiesExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DonationsAndSubsidiesExpense" xlink:to="ifrs-full_DonationsAndSubsidiesExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DonationsAndSubsidiesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Donations and subsidies expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_DonationsAndSubsidiesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax-exempt donations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingExpense" xlink:label="ifrs-full_MiscellaneousOtherOperatingExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_MiscellaneousOtherOperatingExpense" xlink:to="ifrs-full_MiscellaneousOtherOperatingExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_MiscellaneousOtherOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Miscellaneous other operating expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="ifrs-full_MiscellaneousOtherOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other operating expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfProvisionsAxis" xlink:label="ifrs-full_ClassesOfProvisionsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfProvisionsAxis" xlink:to="ifrs-full_ClassesOfProvisionsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfProvisionsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of other provisions [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfOtherProvisionsDomain" xlink:label="ifrs-full_ClassesOfOtherProvisionsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfOtherProvisionsDomain" xlink:to="ifrs-full_ClassesOfOtherProvisionsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfOtherProvisionsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of other provisions [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestructuringProvisionMember" xlink:label="ifrs-full_RestructuringProvisionMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RestructuringProvisionMember" xlink:to="ifrs-full_RestructuringProvisionMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RestructuringProvisionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restructuring provision [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RestructuringProvisionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restructuring provision</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermRestructuringProvision" xlink:label="ifrs-full_ShorttermRestructuringProvision" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShorttermRestructuringProvision" xlink:to="ifrs-full_ShorttermRestructuringProvision_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShorttermRestructuringProvision_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current restructuring provision</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IncreaseDecreaseInOtherOperatingExpense" xlink:label="iva_IncreaseDecreaseInOtherOperatingExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IncreaseDecreaseInOtherOperatingExpense" xlink:to="iva_IncreaseDecreaseInOtherOperatingExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IncreaseDecreaseInOtherOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in other operating expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IncreaseDecreaseInOtherOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in other operating expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IncreaseDecreaseInOtherOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in other operating expense</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ImpairmentOfFixedAssets" xlink:label="iva_ImpairmentOfFixedAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ImpairmentOfFixedAssets" xlink:to="iva_ImpairmentOfFixedAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ImpairmentOfFixedAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impairment of fixed assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ImpairmentOfFixedAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impairment of fixed assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InventoryWritedown2011" xlink:label="ifrs-full_InventoryWritedown2011" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InventoryWritedown2011" xlink:to="ifrs-full_InventoryWritedown2011_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InventoryWritedown2011_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventory write-down</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InventoryWritedown2011_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventory impairment</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancialIncomeAndExpensesTable" xlink:label="iva_FinancialIncomeAndExpensesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancialIncomeAndExpensesTable" xlink:to="iva_FinancialIncomeAndExpensesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancialIncomeAndExpensesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of information pertaining to disclosure of financial income and expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancialIncomeAndExpensesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Income And Expenses [Table]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PgeLoansPprLoansAndBankOverdraftsMember" xlink:label="iva_PgeLoansPprLoansAndBankOverdraftsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PgeLoansPprLoansAndBankOverdraftsMember" xlink:to="iva_PgeLoansPprLoansAndBankOverdraftsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PgeLoansPprLoansAndBankOverdraftsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for PGE (Prt Garanti par l'Etat) loans, PPR (Prts Participatifs Relance) loans and bank overdrafts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PgeLoansPprLoansAndBankOverdraftsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE Loans, the PPR Loans And Bank Overdrafts [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PgeLoansPprLoansAndBankOverdraftsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">PGE loans, the PPR loans; and interests on bank overdrafts</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EuropeanInvestmentBankWarrantsMember" xlink:label="iva_EuropeanInvestmentBankWarrantsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EuropeanInvestmentBankWarrantsMember" xlink:to="iva_EuropeanInvestmentBankWarrantsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EuropeanInvestmentBankWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to European Investment Bank warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EuropeanInvestmentBankWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">European Investment Bank Warrants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_EuropeanInvestmentBankWarrantsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB warrants</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_FinancialIncomeAndExpensesLineItems" xlink:label="iva_FinancialIncomeAndExpensesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_FinancialIncomeAndExpensesLineItems" xlink:to="iva_FinancialIncomeAndExpensesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_FinancialIncomeAndExpensesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_FinancialIncomeAndExpensesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Income And Expenses [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_FinancialIncomeAndExpensesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial income and expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestIncomeOnCashAndCashEquivalents" xlink:label="ifrs-full_InterestIncomeOnCashAndCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestIncomeOnCashAndCashEquivalents" xlink:to="ifrs-full_InterestIncomeOnCashAndCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestIncomeOnCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest income on cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestIncomeOnCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Income from cash equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ForeignExchangeGain" xlink:label="ifrs-full_ForeignExchangeGain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ForeignExchangeGain" xlink:to="ifrs-full_ForeignExchangeGain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange gain</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange gains</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherFinanceIncome" xlink:label="ifrs-full_OtherFinanceIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherFinanceIncome" xlink:to="ifrs-full_OtherFinanceIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherFinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other finance income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_OtherFinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other financial income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpense" xlink:label="ifrs-full_InterestExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestExpense" xlink:to="ifrs-full_InterestExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_InterestExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest cost</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ForeignExchangeLoss" xlink:label="ifrs-full_ForeignExchangeLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ForeignExchangeLoss" xlink:to="ifrs-full_ForeignExchangeLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange losses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LossesOnChangeInFairValueOfDerivatives" xlink:label="ifrs-full_LossesOnChangeInFairValueOfDerivatives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LossesOnChangeInFairValueOfDerivatives" xlink:to="ifrs-full_LossesOnChangeInFairValueOfDerivatives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LossesOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Losses on change in fair value of derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ifrs-full_LossesOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Losses on fair value variation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherFinanceCost" xlink:label="ifrs-full_OtherFinanceCost" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherFinanceCost" xlink:to="ifrs-full_OtherFinanceCost_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherFinanceCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other finance cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_OtherFinanceCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other financial expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestIncomeOnDeposits" xlink:label="ifrs-full_InterestIncomeOnDeposits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestIncomeOnDeposits" xlink:to="ifrs-full_InterestIncomeOnDeposits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestIncomeOnDeposits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest income on deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestIncomeOnDeposits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest income on deposits</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsOnChangeInFairValueOfDerivatives" xlink:label="ifrs-full_GainsOnChangeInFairValueOfDerivatives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GainsOnChangeInFairValueOfDerivatives" xlink:to="ifrs-full_GainsOnChangeInFairValueOfDerivatives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GainsOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gains on change in fair value of derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_GainsOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gain on fair value variation</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethodBeforeEliminations" xlink:label="iva_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethodBeforeEliminations" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethodBeforeEliminations" xlink:to="iva_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethodBeforeEliminations_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethodBeforeEliminations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share of profit (loss) of associates accounted for using equity method before eliminations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethodBeforeEliminations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share of profit (loss) of associates accounted for using equity method before eliminations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethodBeforeEliminations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share of net loss</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_EliminationOfDownstreamSales" xlink:label="iva_EliminationOfDownstreamSales" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_EliminationOfDownstreamSales" xlink:to="iva_EliminationOfDownstreamSales_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_EliminationOfDownstreamSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of elimination of downstream sales.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_EliminationOfDownstreamSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Elimination Of Downstream Sales</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_EliminationOfDownstreamSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Elimination of downstream sales</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccountingProfit" xlink:label="ifrs-full_AccountingProfit" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AccountingProfit" xlink:to="ifrs-full_AccountingProfit_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AccountingProfit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accounting profit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AccountingProfit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss before tax</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ApplicableTaxRate" xlink:label="ifrs-full_ApplicableTaxRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ApplicableTaxRate" xlink:to="ifrs-full_ApplicableTaxRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ApplicableTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Applicable tax rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ApplicableTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Theoretical tax rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:label="ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:to="ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax expense (income) at applicable tax rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax benefit at theoretical rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TaxEffectOfTaxCredits" xlink:label="iva_TaxEffectOfTaxCredits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TaxEffectOfTaxCredits" xlink:to="iva_TaxEffectOfTaxCredits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TaxEffectOfTaxCredits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to tax effect of tax credits.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TaxEffectOfTaxCredits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax effect of tax credits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TaxEffectOfTaxCredits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax credits</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:label="iva_PermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:to="iva_PermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount due to permanent differences for reconciliation between accounting profit and tax expense income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Permanent Differences for Reconciliation Between Accounting Profit and Tax Expense Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Permanent differences</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherPermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:label="iva_OtherPermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherPermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:to="iva_OtherPermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherPermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount due to other permanent differences for reconciliation between accounting profit and tax expense income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherPermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Permanent Differences For Reconciliation Between Accounting Profit And Tax Expense Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherPermanentDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other permanent differences</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TaxEffectOfTemporaryDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:label="iva_TaxEffectOfTemporaryDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TaxEffectOfTemporaryDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:to="iva_TaxEffectOfTemporaryDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TaxEffectOfTemporaryDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to temporary differences.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TaxEffectOfTemporaryDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax Effect Of Temporary Differences For Reconciliation Between Accounting Profit And Tax Expense Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_TaxEffectOfTemporaryDifferencesForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Temporary differences</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TaxEffectOfForeignTaxRates" xlink:label="ifrs-full_TaxEffectOfForeignTaxRates" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TaxEffectOfForeignTaxRates" xlink:to="ifrs-full_TaxEffectOfForeignTaxRates_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TaxEffectOfForeignTaxRates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax effect of foreign tax rates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_TaxEffectOfForeignTaxRates_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax rate differences</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_DeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferencesUnrecognized" xlink:label="iva_DeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferencesUnrecognized" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_DeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferencesUnrecognized" xlink:to="iva_DeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferencesUnrecognized_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_DeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferencesUnrecognized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount due to unrecognized deferred tax assets related to tax losses and temporary differences for reconciliation between accounting profit and tax expense income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_DeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferencesUnrecognized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred Tax Assets Related To Tax Losses And Temporary Differences Unrecognized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_DeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferencesUnrecognized_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non recognition of deferred tax assets related to tax losses and temporary differences</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_TaxEffectImpairmentLossOfDeferredTaxAsset" xlink:label="iva_TaxEffectImpairmentLossOfDeferredTaxAsset" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_TaxEffectImpairmentLossOfDeferredTaxAsset" xlink:to="iva_TaxEffectImpairmentLossOfDeferredTaxAsset_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_TaxEffectImpairmentLossOfDeferredTaxAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to impairment loss of deferred tax asset.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_TaxEffectImpairmentLossOfDeferredTaxAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax Effect, Impairment loss Of Deferred Tax Asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="iva_TaxEffectImpairmentLossOfDeferredTaxAsset_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impairment loss of deferred tax asset</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods" xlink:label="ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods" xlink:to="ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax expense (income) and adjustments for current tax of prior periods</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxExpenseIncome" xlink:label="ifrs-full_CurrentTaxExpenseIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentTaxExpenseIncome" xlink:to="ifrs-full_CurrentTaxExpenseIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax expense (income)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_CurrentTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss" xlink:label="ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss" xlink:to="ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax expense (income) recognised in profit or loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AverageEffectiveTaxRate" xlink:label="ifrs-full_AverageEffectiveTaxRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AverageEffectiveTaxRate" xlink:to="ifrs-full_AverageEffectiveTaxRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AverageEffectiveTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Average effective tax rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AverageEffectiveTaxRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Effective tax rate</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NotesToInterimCondensedConsolidatedStatementOfIncomeLossAbstract" xlink:label="iva_NotesToInterimCondensedConsolidatedStatementOfIncomeLossAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NotesToInterimCondensedConsolidatedStatementOfIncomeLossAbstract" xlink:to="iva_NotesToInterimCondensedConsolidatedStatementOfIncomeLossAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NotesToInterimCondensedConsolidatedStatementOfIncomeLossAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NotesToInterimCondensedConsolidatedStatementOfIncomeLossAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basic and diluted loss per share</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AgreementWithContractManufacturingOrganizationsMember" xlink:label="iva_AgreementWithContractManufacturingOrganizationsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AgreementWithContractManufacturingOrganizationsMember" xlink:to="iva_AgreementWithContractManufacturingOrganizationsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AgreementWithContractManufacturingOrganizationsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for agreement with clinical and commercial supply manufacturing, commercial and pre-commercial activities, research and development activities and other services and products.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AgreementWithContractManufacturingOrganizationsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Agreement With Contract Manufacturing Organizations [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AgreementWithContractManufacturingOrganizationsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CMO</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_IfrsLeaseAgreementsMember" xlink:label="iva_IfrsLeaseAgreementsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_IfrsLeaseAgreementsMember" xlink:to="iva_IfrsLeaseAgreementsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_IfrsLeaseAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for lease agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_IfrsLeaseAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ifrs Lease Agreements [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_IfrsLeaseAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherAgreementsMember" xlink:label="iva_OtherAgreementsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherAgreementsMember" xlink:to="iva_OtherAgreementsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for other agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Agreements [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherAgreementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Others</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContractualCapitalCommitments" xlink:label="ifrs-full_ContractualCapitalCommitments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ContractualCapitalCommitments" xlink:to="ifrs-full_ContractualCapitalCommitments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ContractualCapitalCommitments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contractual capital commitments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ContractualCapitalCommitments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total commitments given</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ContractualCapitalCommitments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commitment amount</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AgreementsConcerningProvisionOfFacilities" xlink:label="iva_AgreementsConcerningProvisionOfFacilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AgreementsConcerningProvisionOfFacilities" xlink:to="iva_AgreementsConcerningProvisionOfFacilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AgreementsConcerningProvisionOfFacilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of agreements concerning provision of facilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AgreementsConcerningProvisionOfFacilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Agreements concerning the provision of facilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AgreementsConcerningProvisionOfFacilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Agreements concerning the provision of facilities</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CommitmentsReceived" xlink:label="iva_CommitmentsReceived" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CommitmentsReceived" xlink:to="iva_CommitmentsReceived_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CommitmentsReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of commitments received.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CommitmentsReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commitments Received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CommitmentsReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total commitments received</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SupplierFisherClinicalMember" xlink:label="iva_SupplierFisherClinicalMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SupplierFisherClinicalMember" xlink:to="iva_SupplierFisherClinicalMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SupplierFisherClinicalMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for supplier Fisher Clinical.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SupplierFisherClinicalMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Supplier Fisher Clinical [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SupplierFisherClinicalMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Supplier Fisher Clinical</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SupplierMarkenSasMember" xlink:label="iva_SupplierMarkenSasMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SupplierMarkenSasMember" xlink:to="iva_SupplierMarkenSasMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SupplierMarkenSasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for supplier Marken SAS.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SupplierMarkenSasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Supplier Marken SAS [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SupplierMarkenSasMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Supplier Marken SAS</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CommitmentsAmountPayableForServicesReceivedUnderContract" xlink:label="iva_CommitmentsAmountPayableForServicesReceivedUnderContract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CommitmentsAmountPayableForServicesReceivedUnderContract" xlink:to="iva_CommitmentsAmountPayableForServicesReceivedUnderContract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CommitmentsAmountPayableForServicesReceivedUnderContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commitment amount payable for services received under contract.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CommitmentsAmountPayableForServicesReceivedUnderContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commitments Amount Payable For Services Received Under Contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="iva_CommitmentsAmountPayableForServicesReceivedUnderContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount committed to pay</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_RemainingAmountPayableUnderContract" xlink:label="iva_RemainingAmountPayableUnderContract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_RemainingAmountPayableUnderContract" xlink:to="iva_RemainingAmountPayableUnderContract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_RemainingAmountPayableUnderContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Remaining amount payable under contract.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_RemainingAmountPayableUnderContract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Remaining amount payable under contract</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ContractualCommitmentsBonusOrMalusAmount" xlink:label="iva_ContractualCommitmentsBonusOrMalusAmount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ContractualCommitmentsBonusOrMalusAmount" xlink:to="iva_ContractualCommitmentsBonusOrMalusAmount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ContractualCommitmentsBonusOrMalusAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of bonus or malus amount included in contractual commitments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ContractualCommitmentsBonusOrMalusAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contractual Commitments, Bonus Or Malus Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ContractualCommitmentsBonusOrMalusAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bonus or malus capped amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:to="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of transactions between related parties [table]</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SamsaraBioCapitalL.pMember" xlink:label="iva_SamsaraBioCapitalL.pMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SamsaraBioCapitalL.pMember" xlink:to="iva_SamsaraBioCapitalL.pMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SamsaraBioCapitalL.pMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents Samsara BioCapital L.P.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SamsaraBioCapitalL.pMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Samsara Bio Capital L.p [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SamsaraBioCapitalL.pMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Samsara Bio Capital L.p</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_InventionSPatentabilityMember" xlink:label="iva_InventionSPatentabilityMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_InventionSPatentabilityMember" xlink:to="iva_InventionSPatentabilityMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_InventionSPatentabilityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for disclosing an invention to the company that meets the conditions for patentability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_InventionSPatentabilityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Invention's Patentability [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_InventionSPatentabilityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Invention's patentability</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_PatentingMember" xlink:label="iva_PatentingMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_PatentingMember" xlink:to="iva_PatentingMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_PatentingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for when the invention is patented for the first time in one of the territories stipulated in the agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_PatentingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patenting [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_PatentingMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patenting</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_MarketingAuthorizationMember" xlink:label="iva_MarketingAuthorizationMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_MarketingAuthorizationMember" xlink:to="iva_MarketingAuthorizationMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_MarketingAuthorizationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for when a product implementing one or more inventions receives marketing authorization in one of the stipulated territories.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_MarketingAuthorizationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Marketing Authorization [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_MarketingAuthorizationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Marketing authorization</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_CommercialExploitationMember" xlink:label="iva_CommercialExploitationMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_CommercialExploitationMember" xlink:to="iva_CommercialExploitationMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_CommercialExploitationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for when a product implementing one or more of his inventions enters the commercial exploitation phase (generates revenues) in one of the stipulated territories.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_CommercialExploitationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commercial Exploitation [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_CommercialExploitationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commercial exploitation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:to="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of transactions between related parties [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related-party transactions</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRights" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRights" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRights" xlink:to="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRights_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties for transfer of patent intellectual property rights.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties for transfer of patent intellectual property rights</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsUnconditionalAmount" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsUnconditionalAmount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsUnconditionalAmount" xlink:to="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsUnconditionalAmount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsUnconditionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties for transfer of patent intellectual property rights, unconditional amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsUnconditionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties for transfer of patent intellectual property rights, unconditional amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsUnconditionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties for patent intellectual property rights unconditional amount</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsConditionalAmount" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsConditionalAmount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsConditionalAmount" xlink:to="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsConditionalAmount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsConditionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties for transfer of patent intellectual property rights, conditional amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsConditionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties for transfer of patent intellectual property rights, conditional amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AmountPayableToRelatedPartiesForTransferOfPatentIntellectualPropertyRightsConditionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related parties of patent intellectual property, conditional amount</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AmountPayableToRelatedPartyForTransferOfKnowHow" xlink:label="iva_AmountPayableToRelatedPartyForTransferOfKnowHow" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AmountPayableToRelatedPartyForTransferOfKnowHow" xlink:to="iva_AmountPayableToRelatedPartyForTransferOfKnowHow_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AmountPayableToRelatedPartyForTransferOfKnowHow_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related party for transfer of know-how.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AmountPayableToRelatedPartyForTransferOfKnowHow_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related party for transfer of know-how</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AmountPayableToRelatedPartyForTransferOfKnowHow_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount payable to related party</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_NumberOfSharesSubscribed" xlink:label="iva_NumberOfSharesSubscribed" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_NumberOfSharesSubscribed" xlink:to="iva_NumberOfSharesSubscribed_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_NumberOfSharesSubscribed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares subscribed.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_NumberOfSharesSubscribed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Shares Subscribed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_NumberOfSharesSubscribed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares subscribed</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ExpensesUnderSocialSecurityAgreementInConnectionWithEmployeeSDeparture" xlink:label="iva_ExpensesUnderSocialSecurityAgreementInConnectionWithEmployeeSDeparture" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ExpensesUnderSocialSecurityAgreementInConnectionWithEmployeeSDeparture" xlink:to="iva_ExpensesUnderSocialSecurityAgreementInConnectionWithEmployeeSDeparture_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ExpensesUnderSocialSecurityAgreementInConnectionWithEmployeeSDeparture_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expenses under social security agreement in connection with employee's departure.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ExpensesUnderSocialSecurityAgreementInConnectionWithEmployeeSDeparture_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expenses under social security agreement in connection with employee's departure</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ExpensesUnderTransactionalMemorandumOfUnderstandingInConnectionWithEmployeeSDeparture" xlink:label="iva_ExpensesUnderTransactionalMemorandumOfUnderstandingInConnectionWithEmployeeSDeparture" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ExpensesUnderTransactionalMemorandumOfUnderstandingInConnectionWithEmployeeSDeparture" xlink:to="iva_ExpensesUnderTransactionalMemorandumOfUnderstandingInConnectionWithEmployeeSDeparture_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ExpensesUnderTransactionalMemorandumOfUnderstandingInConnectionWithEmployeeSDeparture_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expenses under transactional memorandum of understanding in connection with employee's departure.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ExpensesUnderTransactionalMemorandumOfUnderstandingInConnectionWithEmployeeSDeparture_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expenses under transactional memorandum of understanding in connection with employee's departure</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_SharesAndPrefundedWarrantsAccumulatedSubscriptionPrice" xlink:label="iva_SharesAndPrefundedWarrantsAccumulatedSubscriptionPrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_SharesAndPrefundedWarrantsAccumulatedSubscriptionPrice" xlink:to="iva_SharesAndPrefundedWarrantsAccumulatedSubscriptionPrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_SharesAndPrefundedWarrantsAccumulatedSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares and prefunded warrants, accumulated subscription price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_SharesAndPrefundedWarrantsAccumulatedSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares and prefunded warrants, accumulated subscription price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_SharesAndPrefundedWarrantsAccumulatedSubscriptionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price of shares and prefunded warrants</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelOfEntityOrParentMember" xlink:label="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember" xlink:to="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel of entity or parent [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Executive and corporate officers</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:label="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:to="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation, short-term employee benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term benefits</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_KeyManagementPersonnelCompensationAdjustmentOfCompensationPostEmploymentBenefits" xlink:label="iva_KeyManagementPersonnelCompensationAdjustmentOfCompensationPostEmploymentBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_KeyManagementPersonnelCompensationAdjustmentOfCompensationPostEmploymentBenefits" xlink:to="iva_KeyManagementPersonnelCompensationAdjustmentOfCompensationPostEmploymentBenefits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_KeyManagementPersonnelCompensationAdjustmentOfCompensationPostEmploymentBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation (adjustment of compensation), post-employment benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_KeyManagementPersonnelCompensationAdjustmentOfCompensationPostEmploymentBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation (adjustment of compensation), post-employment benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_KeyManagementPersonnelCompensationAdjustmentOfCompensationPostEmploymentBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Post-employment benefits</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:label="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:to="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation, share-based payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based payment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensation" xlink:label="ifrs-full_KeyManagementPersonnelCompensation" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelCompensation" xlink:to="ifrs-full_KeyManagementPersonnelCompensation_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelCompensation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net total</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xlink:label="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable" xlink:to="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of nature and extent of risks arising from financial instruments [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="ifrs-full_TypesOfRisksAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TypesOfRisksAxis" xlink:to="ifrs-full_TypesOfRisksAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TypesOfRisksAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Types of risks [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain" xlink:label="ifrs-full_TypesOfRisksDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TypesOfRisksDomain" xlink:to="ifrs-full_TypesOfRisksDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TypesOfRisksDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Types of risks [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrencyRiskMember" xlink:label="ifrs-full_CurrencyRiskMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrencyRiskMember" xlink:to="ifrs-full_CurrencyRiskMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrencyRiskMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Currency risk [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrencyRiskMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exposure to foreign exchange risk</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems" xlink:label="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems" xlink:to="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of nature and extent of risks arising from financial instruments [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial risk management</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ForeignExchangeRateWithReasonablyPossibleIncreaseInRiskAssumption" xlink:label="iva_ForeignExchangeRateWithReasonablyPossibleIncreaseInRiskAssumption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ForeignExchangeRateWithReasonablyPossibleIncreaseInRiskAssumption" xlink:to="iva_ForeignExchangeRateWithReasonablyPossibleIncreaseInRiskAssumption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ForeignExchangeRateWithReasonablyPossibleIncreaseInRiskAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange rate with reasonably possible increase in risk assumption</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ForeignExchangeRateWithReasonablyPossibleIncreaseInRiskAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange rate with reasonably possible increase in risk assumption</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_ForeignExchangeRateWithReasonablyPossibleIncreaseInRiskAssumption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impact of a 5% change in exchange rate at the end of period</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherFinancialInformationAbstract" xlink:label="iva_OtherFinancialInformationAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherFinancialInformationAbstract" xlink:to="iva_OtherFinancialInformationAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherFinancialInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherFinancialInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other financial information</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_AccruedInterestOnBorrowingsMember" xlink:label="iva_AccruedInterestOnBorrowingsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_AccruedInterestOnBorrowingsMember" xlink:to="iva_AccruedInterestOnBorrowingsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_AccruedInterestOnBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents accrued interest on borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_AccruedInterestOnBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued interest on borrowings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_AccruedInterestOnBorrowingsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued interest payable on loans</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_OtherPayablesMember" xlink:label="iva_OtherPayablesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_OtherPayablesMember" xlink:to="iva_OtherPayablesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_OtherPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents other payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_OtherPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other payables [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_OtherPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other miscellaneous payables</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_InflationRiskMember" xlink:label="iva_InflationRiskMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_InflationRiskMember" xlink:to="iva_InflationRiskMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_InflationRiskMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for inflation risk.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_InflationRiskMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inflation Risk [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="iva_InflationRiskMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inflation Risk</label>
    <loc xlink:type="locator" xlink:href="iva-20251231.xsd#iva_ExperiencedInflationDuringPeriod" xlink:label="iva_ExperiencedInflationDuringPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="iva_ExperiencedInflationDuringPeriod" xlink:to="iva_ExperiencedInflationDuringPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="iva_ExperiencedInflationDuringPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Experienced inflation during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="iva_ExperiencedInflationDuringPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Experienced inflation during the period</label>
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