4. INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

4. INTANGIBLE ASSETS

Intangible assets at March 31, 2020 and December 31, 2019 consist of the following:

	March 31, 2020						December 31, 2019
			Accumulated						Accumulated
	Cost		Amortization		Net		Cost		Amortization		Net
Trademark and other intangible rights related to Nabi-HB	$	4,100,046	$	1,659,542	$	2,440,504	$	4,100,046	$	1,513,112	$	2,586,934
Rights to intermediates		907,421		367,289		540,132		907,421		334,881		572,540
Customer contract		1,076,557		1,076,557		—		1,076,557		1,076,557		—
	$	6,084,024	$	3,103,388	$	2,980,636	$	6,084,024	$	2,924,550	$	3,159,474

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, 2020 and 2019 was $0.2 million. Estimated aggregate future aggregate amortization expense for the next five years is expected to be as follows:

Remainder of 2020	$	536,514
2021		715,352
2022		715,352
2023		715,352
2024		298,066