Note 6 - Intangible Assets

6 Months Ended

Mar. 31, 2025

Goodwill and Intangible Assets Disclosure [Text Block]

NOTE 6 – INTANGIBLE ASSETS

Intangible assets with finite useful lives are amortized over the period of estimated benefit using the straight-line method. The weighted average remaining useful life of intangible assets is 7.3 years. The straight-line method of amortization represents management’s best estimate of the distribution of the economic value of the intangible assets.

	*March 31, 2025*							*September 30, 2024*
						*Net*							*Net*
	*Cost*		*Accumulated*			*Carrying*		*Cost*		*Accumulated*			*Carrying*
	*Basis*		*Amortization*			*Amount*		*Basis*		*Amortization*			*Amount*
Finite-Lived Intangible Assets
Patents	$	12,123,750	$	—			12,123,750	$	32,447,460	$	(6,699,330	)		25,748,130
Other		745,947		(382,579	)		363,368		745,947		(308,188	)		437,759
Trademarks		1,095,693		(280,186	)		815,507		1,095,693		(225,552	)		870,141
Total finite-lived intangible assets		13,965,390		(662,765	)		13,302,625		34,289,100		(7,233,070	)		27,056,030
Total Intangible Assets	$	13,965,390	$	(662,765	)	$	13,302,625	$	34,289,100	$	(7,233,070	)	$	27,056,030

Total future amortization expense for finite-lived intangible assets is as follows:

Years Ended September 30,	*Future Amortization*
2025 (6 months)	$	946,979
2026		1,888,783
2027		1,878,973
2028		1,744,360
2029		1,739,593
Thereafter		5,103,937
Total Future Amortization		13,302,625

For the three and six months ended March 31, 2025, amortization of the intangible assets was $0.9 million and $1.8 million, respectively (during the three and six months ended March 31, 2024: $1.3 million and $2.6 million, respectively).

Due to unfavorable market conditions and the decline of market prices of the Company’s common stock, we tested patents acquired in September 2022 as part of the Bollinger segment (see Note 21 - Segment information) for recoverability on March 31, 2025 and recognized impairment loss in amount of $12.0 million mainly due to the uncertainty of future fundings required to support the business and decrease of Company's market capitalization. During the three and six months ended March 31, 2024: impairment of the intangible assets was $73.4 million, plus impairment of goodwill amounted to $28.8 million (carrying value of goodwill was zero as of both March 31, 2025 and September 30, 2024).