ArentFox Schiff

Intellectual Property

Partner

Ehsun is a trial lawyer specializing in complex intellectual property disputes, with a particular emphasis on patent litigation.

A nationally recognized litigator, Ehsun represents clients in high-stakes intellectual property disputes involving patents, copyrights, trademarks, trade secrets, false advertising, and unfair competition. He has successfully tried over 20 cases to verdict and has served as lead or co-lead counsel in some of the most complex technology cases venued across the country, including in US District Courts, the US International Trade Commission, and the USPTO’s Patent Trial and Appeal Board.

Ehsun’s experience ranges from representing Fortune 50 companies to early-stage startups in disputes related to smartphones, microprocessors, software, wireless communications, network management, telecommunications, medical devices, biotech and life science products, automotive, and consumer products. Among his victories, Ehsun helped a Los Angeles-based medical research foundation obtain a $268 million judgment after the district court doubled the jury’s damages award for willful patent infringement, making it one of the largest patent damages awards in California.

Ehsun frequently writes and speaks on developments in intellectual property law and is a sought-after commentator for publications such as Bloomberg Law, The Daily Journal, Managing IP, and Law360, among others.

Ehsun has been inducted into the Fellows of the American Bar Foundation, an honorary society with membership limited to 1% of the lawyers licensed to practice in a jurisdiction.

Santa Clara University School of Law, JD

University of California, Davis, BA

Ehsun sits on the Board of Directors for Get Vocal for Victims, a 501(c)(3) organization created by experienced prosecutors and victim advocates to provide no-fee legal representation to crime victims.