Chen Zang

I'll research this attorney before writing the summary.

Let me dig into the specific tracked cases and IPR activity.

Professional Summary: Chen Zang, Ph.D.

Specialty / focus. Chen Zang is a patent litigator and prosecutor whose practice centers on electrical and mechanical arts, grounded in a doctorate in physics (research in optoelectronic devices, displays, laser systems, and semiconductor devices). His published practice description covers wireless communications (4G/LTE, 5G/NR), video coding standards, semiconductors and fabrication, memory controllers, displays (LCD/LED), digital signal processors, computer power systems, robotics, consumer electronics, optical communications, networking, file storage, image/video processing, streaming/multimedia, IoT, machine learning and computer vision, electric and autonomous vehicles, and—on the prosecution side—fintech, business methods, and ophthalmic lenses. The tracked cases fit this profile squarely: Wi-Fi 6 standard-essential patent disputes (Samsung v. Wilus; Samsung/Harbor Island Dynamic), semiconductor isolation-trench and memory-related IPRs, and consumer-electronics matters. The most recent patent-prosecution activity in USPTO records is concentrated in automotive/electronics portfolios (Toyota, Toshiba, Xiaomi, ASML, Mobileye, Alibaba).

Side preference — defense-side operating-company work. The 5 plaintiff / 4 defendant split is somewhat misleading: his "plaintiff"-side appearances are largely declaratory-judgment actions filed by Samsung Electronics (against Wilus Institute, Hannibal IP, and Harbor Island Dynamic) arising out of SEP/NPE assertions against Samsung, plus the mirror-image invalidity/defense side in the same disputes. In other words, he represents the operating company/accused infringer in both postures rather than prosecuting claims for NPEs/PAEs. His IPR and ITC work is likewise predominantly petitioner/respondent side for technology companies (Samsung, SharkNinja, NetApp, HPE, Micron, BMW, Innoscience), though he has also represented patent owners in IPRs (FaceTec).

Firm context and notable matters. Finnegan, Henderson, Farabow, Garrett & Dunner (Washington, DC) accounts for eight of nine tracked appearances. One tracked entry lists him as "Of Counsel" at Cole Schotz in Samsung Electronics Co. v. Hannibal IP LLC; I could not independently verify a Cole Schotz affiliation from firm or press sources, and his Finnegan bio does not list prior firm history, so that entry should be confirmed before relying on it. Prominent matters: representing Samsung as petitioner in IPRs against Harbor Island Dynamic (IPR2024-01402–01405, with parallel E.D. Tex. litigation stayed) and against Wilus patents (IPR2025-00933, -00988); petitioner-side work for NetApp/HPE in a thirteen-IPR series against KOM Software, including Federal Circuit appeals; SharkNinja in the iRobot robot-vacuum district court/IPR dispute, where all asserted iRobot claims were cancelled at the PTAB; BMW's successful ITC defense against Arigna (337-TA-1267); and a final-determination win for Innoscience against Infineon (337-TA-1414). The Samsung–Wilus E.D. Tex. litigation was resolved in July 2026 through Samsung's entry into the Sisvel Wi-Fi Multimode pool as both licensee and licensor.

PTAB/IPR experience and credentials. IPR work is a core part of the practice, not occasional: his firm bio states he has worked on more than 30 IPRs, district court cases, and ITC investigations, and he appears as counsel of record on numerous petitions and consolidated PTAB hearings. He is admitted to the USPTO (Reg. No. 81568), California, and the District of Columbia, and has been recognized in Best Lawyers: Ones to Watch (2024–2026) for patent law and patent litigation. Reported education: J.D., University of Texas (2014), plus a Ph.D. in physics (institution not specified in the sources reviewed); the J.D. date comes from a third-party directory rather than a firm source and should be treated as unconfirmed.