Acquisition-related Intangible Assets, Net

3 Months Ended

Apr. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Acquisition-related intangible assets, net consisted of the following (in thousands):



	April 30, 2019			January 31, 2019
Developed technology	$	186,800		$	186,800
Customer relationships	189,000			189,000
Trade name	12,000			12,000
Backlog	11,000			11,000
Acquisition-related intangible assets, gross	398,800			398,800
Less accumulated amortization	(104,903		)	(85,560		)
Acquisition-related intangible assets, net	$	293,897		$	313,240

Amortization expense related to acquisition-related intangible assets was $19 million and $5 million for the three months ended April 30, 2019 and 2018, respectively.

As of April 30, 2019, our future estimated amortization expense related to acquisition-related intangible assets is as follows (in thousands):



Fiscal period:
Remainder of 2020	$	49,513
2021	48,142
2022	43,733
2023	41,009
2024	29,833
Thereafter	81,667
Total	$	293,897