With full-service intellectual property capabilities, Weil, Gotshal & Manges LLP is ‘creative and innovative in its approach’ to patent litigation and represents tech and life sciences companies at all levels of the US court system, with particular strength in patent appeals and proceedings at the Patent Trial and Appeal Board. In New York, patent litigator Elizabeth Weiswasser has extensive experience working with clients in the life sciences sector, including companies active in the biologics, pharmaceuticals, chemicals, and medical devices spaces, and Anish Desai is a skillful trial lawyer in the patent litigation space across a broad range of venues. The duo co-chair the group with Silicon Valley lawyer Edward Reines, who specializes in litigating patent and other IP cases in both the tech and life sciences industries. Also in Silicon Valley, pharma expert Derek Walter acts for the likes of Synthego and Pacific Biosciences in all stages of patent litigation.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

‘Creative and innovative in its approach. Knows the company well and understands our products and technology. Responsive and dedicated.’
'Edward Reines and Derek Walter are excellent.’

Key clients

Hewlett-Packard, Inc.
Bio-Rad Laboratories
Illumina
Comcast
Palo Alto Networks
Tesla
Invitae
NanoString
Guardant Health
Altria
Regeneron Pharmaceuticals
BeiGene
Synthego
Pacific Biosciences
Parse Biosciences
NeoGenomics
Daiichi Sankyo

Work highlights

Acted for Altria in a competitor infringement suit in the Middle District of North Carolina, delivering a plaintiff jury verdict and securing follow-on rulings.
Represented Synthego in a case before the PTAB which invalidated two Agilent patents, including all 63 claims in those patents, that were asserted against the client.
Acted for Regeneron in a case before the PTAB which protected the client’s biologic to treat macular degeneration and other serious eye diseases.