James Shrin Tsuei

I'll research this attorney before drafting.

Let me verify a few key outcomes and the defendant-side work.

Let me verify a few more details: the Target/Headwater case, the Corephotonics outcome, and his PTAB party roles.

James S. Tsuei — patent litigation practice summary

Focus areas. Mr. Tsuei is a Los Angeles-based partner at Russ August & Kabat whose practice centers on patent infringement litigation, with related work in trade secret and complex business disputes. The technology mix in his docket is heavily telecommunications and software: wireless/mobile data optimization, device-based service policies and messaging (the Headwater Research portfolio of Gregory Raleigh), mobile device provisioning and imaging/camera systems (Corephotonics), streaming and data compression (Realtime Adaptive Streaming), containerization and cloud software (VirtaMove), and OLED display technology (Solas OLED, IPR2019-01668). His firm bio describes experience spanning "smartphones and OLED displays to database management software and data compression."

Side preference. The tracked record is overwhelmingly plaintiff-side — six of seven appearances — and his patent-owner representation includes both operating companies (VirtaMove) and licensing/monetization entities (Headwater Research, Corephotonics). He is listed among the counsel of record (and at times argued at hearings) for Headwater in the E.D. Tex. campaigns against Samsung, Verizon/Cellco, T-Mobile/Sprint, Tencent and Amazon, and for VirtaMove and UnaliWear. His only non-plaintiff-side tracked entry is Target Corporation v. Headwater Research LLC, where Headwater is the defendant in a declaratory-judgment posture. On balance, he is a plaintiffs'-side patent-enforcement lawyer rather than a defense-side or defense-leaning generalist.

Firm context and notable matters. He joined Russ August & Kabat in 2018 and was previously at Durie Tangri LLP (2015–2018) and Quinn Emanuel Urquhart & Sullivan LLP (2012–2015). Notable matters include Headwater Research LLC v. Verizon Communications (E.D. Tex.), where he was named to the RAK trial team that won a $175 million jury verdict on July 24, 2025 (Reuters; RAK press release) — a result later undone at the post-trial stage: in an April 23, 2026 final judgment the court held Headwater could not enforce the asserted claims under implied waiver, entered judgment for Verizon as the prevailing party, and closed the case. He is also counsel of record in the parallel Headwater matters, including the E.D. Tex. campaign in which Headwater obtained a separate nine-figure verdict against Samsung in April 2025, and in VirtaMove Corp. v. Hewlett Packard Enterprise (E.D. Tex.), where he was lead counsel and the court sustained VirtaMove's marking/notice pleadings in part against HPE's Rule 12(b)(6) motion.

PTAB/IPR experience. He is a regular pro hac vice participant in PTAB proceedings, principally as backup counsel for patent owners. His admission declarations identify IPR appearances in the Realtime Adaptive Streaming matters against Adobe (IPR2019-00712), Google (IPR2019-01033, -01035) and ARRIS (IPR2019-01222), the Corephotonics matters against Apple (IPR2020-00860, -00905), and Samsung Display v. Solas OLED (IPR2019-01668).

Bar and education. Admitted to the California bar in 2012 (Cal. Bar No. 285530); J.D., University of Pennsylvania Law School, 2012 (cum laude); B.A., UCLA, 2009. No USPTO registration number appears in the sources reviewed, so his PTAB work should be characterized as pro hac vice rather than registered-patent-attorney practice.