Aaron Stiefel

IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

Silver - Individuals: litigation

With a roster of vastly accomplished attorneys, whose great trial experience and varied expertise across a number of practice areas make them a smart choice for a plethora of clients, Arnold & Porter is a noteworthy name across the United States, Europe and Asia. Its New York outpost hosts a team of highly competent litigators, including Daniel Reisner, an attorney with specialties in telecommunications, biotechnology and various medical fields. His successes this year include a long-running precedential case representing Sanofi SA and Regeneron Pharmaceuticals against Amgen, which called into question the scope of antibody patents. Alongside him and also well placed to handle pharmaceutical matters are Daniel DiNapoli and senior counsel Aaron Stiefel, who continue to represent a long-term patron in maintaining the exclusivity of its product in the United States. 

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