Intangible Assets, Net

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

Intangibles Assets, NetThe following table sets forth the gross carrying amounts and related accumulated amortization of intangibles assets (dollars in thousands):

		March 31, 2023						December 31, 2022
		(unaudited)
	Remaining Weighted Average Life (Years)	Carrying Amount, Gross		Accumulated Amortization		Carrying Amount, Net		Carrying Amount, Gross		Accumulated Amortization		Carrying Amount, Net
Acquired in-process research and development		$	124,000	$	—	$	124,000	$	124,000	$	—	$	124,000
Intangible assets subject to amortization:
Acquired developed technology and product rights	7.55	681,500		(132,438)		549,062		681,500		(113,061)		568,439
Capitalized patent defense costs	4.00	43,820		(34,385)		9,435		43,820		(33,796)		10,024
Total intangible assets	7.49	$	849,320	$	(166,823)	$	682,497	$	849,320	$	(146,857)	$	702,463

Amortization expense for intangible assets was $20.0 million and $20.6 million, for the three month periods ended March 31, 2023 and 2022, respectively.