​

  ​ ​ ​

Development

  ​ ​ ​

Patents and 

​

​

in € thousand

​

Costs

​

licenses

​

Total

Costs of acquisition

  ​

  ​

​

  ​

1/1/2025

29,597

1,540

​

31,137

Additions

4,869

1

​

4,870

Foreign exchange differences

(23)

(94)

​

(117)

12/31/2025

34,444

1,447

​

35,891

Accumulated amortization/write downs

​

​

​

​

1/1/2025

(15,243)

(952)

​

(16,196)

Amortization

(2,328)

(216)

​

(2,544)

Foreign exchange differences

23

87

​

110

12/31/2025

(17,548)

(1,081)

​

(18,629)

Carrying amount:

​

​

​

​

1/1/2025

14,354

588

​

14,941

12/31/2025

16,895

366

​

17,262

​

  ​ ​ ​

Development

  ​ ​ ​

Patents and

  ​ ​ ​

​

in € thousand

  ​ ​ ​

Costs

  ​ ​ ​

licenses

  ​ ​ ​

Total

Costs of acquisition

  ​

  ​

  ​

1/1/2024

25,729

1,372

27,102

Additions

3,878

129

4,008

Disposals/Retirements

(1)

—

(1)

Foreign exchange differences

(10)

38

28

12/31/2024

29,597

1,540

31,137

Accumulated amortization/write downs

​

​

​

1/1/2024

(11,452)

(684)

(12,136)

Amortization

(3,801)

(364)

(4,166)

Disposals/Retirements

—

131

131

Foreign exchange differences

10

(36)

(26)

12/31/2024

(15,243)

(952)

(16,196)

Carrying amount:

​

​

​

1/1/2024

14,278

689

14,966

12/31/2024

14,354

588

14,941