Intangible Assets, Net

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

7. Intangible Assets, Net

At December 31, 2017 and 2016, intangible assets, primarily consisting of acquired patents and accumulated amortization were as follows (in thousands):

	December 31,
	2017 (1)		2016 (2)
Intangible assets	$	23,294	$	25,703
Accumulated amortization		(16,394)		(15,497)
Intangible assets, net	$	6,900	$	10,206

(1)	Reflects the effect of the OncoCyte Deconsolidation.
(2)	Reflects the effect of the Asterias Deconsolidation

BioTime amortizes its intangible assets over an estimated period of 10 years on a straight-line basis. BioTime recognized $2.3 million, $3.6 million and $5.3 million in amortization expense of intangible assets during the years ended December 31, 2017, 2016 and 2015, respectively.

Amortization of intangible assets for periods subsequent to December 31, 2017 is as follows (in thousands):

Year Ended December 31,	Amortization Expense
2018	$	2,338
2019		2,328
2020		1,553
2021		517
2022		164
Total	$	6,900