4. INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

4. INTANGIBLE ASSETS

Intangible assets at March 31, 2019 and December 31, 2018 consist of the following:

	March 31, 2019						December 31, 2018
			Accumulated						Accumulated
	Cost		Amortization		Net		Cost		Amortization		Net
Trademark and other intangible rights related to Nabi-HB	$	4,100,046	$	1,073,821	$	3,026,225	$	4,100,046	$	927,391	$	3,172,655
Rights to intermediates		907,421		237,659		669,762		907,421		205,250		702,171
Customer contract		1,076,557		979,367		97,190		1,076,557		946,971		129,586
	$	6,084,024	$	2,290,847	$	3,793,177	$	6,084,024	$	2,079,612	$	4,004,412

All of the Company’s intangible assets were acquired in the Biotest Transaction. Amortization expense related to these intangible assets for the three months ended March 31, 2019 and 2018 was $0.2 million. Estimated aggregate future aggregate amortization expense for the next five years is expected to be as follows: 

Remainder of 2019	$	633,704
2020		715,352
2021		715,352
2022		715,352
2023		715,352