12. Intangible assets


	In process technology		Software & databases		Brands, licenses, patents & know-how		Total

Acquisition value
On January 1 , 2015	€	5,561	€	8,089	€	1,512	€	15,161
Additions				565				565
Sales and disposals				(1,512)				(1,512)
Translation differences				177				177
On December 31, 2015		5,561		7,318		1,512		14,392
Additions				317		15		332
Sales and disposals				(508)		(4)		(512)
Translation differences				58				58
On December 31, 2016		5,561		7,185		1,523		14,269
Additions		1,500		623		2		2,125
Sales and disposals				(100)				(100)
Translation differences				(212)				(212)
On December 31, 2017		7,061		7,496		1,525		16,082

Amortization and impairment
On January 1 , 2015		5,561		6,087		1,497		13,147
Amortization				1,026		4		1,030
Sales and disposals				(1,512)				(1,512)
Translation differences				177				177
On December 31, 2015		5,561		5,777		1,501		12,841
Amortization				856		4		860
Sales and disposals				(509)		(5)		(514)
Translation differences				57				57
On December 31, 2016		5,561		6,182		1,501		13,246
Amortization				644		8		652
Sales and disposals				(99)				(99)
Translation differences				(212)				(212)
On December 31, 2017		5,561		6,514		1,509		13,587

Carrying amount
On December 31, 2015	€	—	€	1,540	€	11	€	1,550
On December 31, 2016	€	—	€	1,003	€	22	€	1,023
On December 31, 2017	€	1,500	€	982	€	16	€	2,495

The intangible assets increased by €1.5 million from €1.0 million at December 31, 2016, to €2.5 million at December 31, 2017. The amortization of €0.7 million was fully compensated by new additions for €2.1 million.

On December 31, 2017, our balance sheet did not hold any internally generated assets capitalized as intangible asset.

The intangible assets decreased by €0.5 million from €1.5 million as at December 31, 2015, to €1.0 million as at December 31, 2016. The amortization of €0.9 million was partly compensated by new additions for €0.3 million.