Licensed rights and other intangible assets

9 Months Ended

Sep. 30, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Licensed rights and other intangible assets

6.Licensed rights and other intangible assets

The following provides information about our license rights and other intangible assets, net (in thousands):

	September 30, 2021						December 31, 2020
	Gross						Gross
	Carrying		Accumulated				Carrying		Accumulated
	Amount		Amortization		Net		Amount		Amortization		Net
Licensed rights and intangible assets    subject to amortization:
License rights	$	40,000	$	6,070	$	33,930	$	40,000	$	3,803	$	36,197
Hormone therapy drug patents		4,732		985		3,747		4,045		749		3,296
Hormone therapy drug patents applied    and pending approval		1,596		—		1,596		1,629		—		1,629
License rights and other intangible assets    subject to amortization		46,328		7,055		39,273		45,674		4,552		41,122
Intangible assets not subject to amortization:
Trademarks/trade name rights		344		—		344		323		—		323
License rights and other intangible assets, net	$	46,672	$	7,055	$	39,617	$	45,997	$	4,552	$	41,445

Licensed rights

We recorded amortization expense related to the exclusive license rights agreement (the “Population Council License Agreement”) with Population Council of $0.8 million for the three months ended September 30, 2021 and 2020, and $2.3 million for the nine months ended September 30, 2021 and 2020.Other intangible assets

As of September 30, 2021, we had a total of 87 patents, of which 46 were domestic. As of December 31, 2020, we had a total of 77 patents, of which 38 were domestic. We recorded amortization expense related to patents of $0.1 million for the three months ended September 30, 2021 and 2020, and $0.2 million for the nine months ended September 30, 2021 and 2020, respectively.

We use a combination of qualitative and quantitative factors to assess licensed rights and intangible assets for impairment. As a result of performing these assessments, we determined that no impairment existed as of September 30, 2021 and, therefore, recorded no write-downs to any of our licensed rights and other intangible assets. However, during the nine months ended September 30, 2020, we wrote off $584,509 in costs related to trademarks and patents.