James S. Tsuei

Date: 2026-05-12

Subject: Professional Summary: James S. Tsuei

James S. Tsuei is a partner at the litigation boutique Russ August & Kabat, where he specializes in intellectual property disputes with a focus on patent litigation. His practice encompasses a range of technologies, including software, data management and compression, smartphones, and display technologies like OLED. Prior to joining Russ August & Kabat, he was an attorney at Durie Tangri LLP (2015-2018) and Quinn Emanuel Urquhart & Sullivan LLP (2012-2015).

Consistent with his firm's focus, Mr. Tsuei's practice is exclusively plaintiff-side, as reflected in his tracked appearances. He represents patent holders in enforcement campaigns against large technology companies. His notable matters include representing Athena Security against Google and Hewlett Packard Enterprise, as well as representing Datonics LLC in cases against The Trade Desk and Neustar.

Mr. Tsuei has experience in every stage of litigation in federal courts and also litigates before the Patent Trial and Appeal Board (PTAB).

He earned his J.D. (cum laude) from the University of Pennsylvania Law School and a B.A. from the University of California, Los Angeles. He is an active member of the State Bar of California.