Jeffrey Liang

Jeffrey Liang is a partner in the Intellectual Property Practice Group at Sheppard, Mullin, Richter & Hampton LLP, based in the firm's Silicon Valley office. He specializes in patent litigation, bringing an engineering background to complex intellectual property disputes. His practice encompasses diverse technologies, including video codecs, cryptography, artificial intelligence (AI), computer architecture, networking, wireless communications (e.g., IEEE 802.11, 802.3, Bluetooth), video games, streaming media, databases, and microcontrollers. He also has experience with key industry standards such as H.264, H.265, AES, TLS, and PCIe.

While the attorney's tracked appearances include two instances on the plaintiff side as back-up counsel, his broader practice and noted successes demonstrate a strong focus on defending operating companies. He represents clients across all phases of patent matters, from pre-suit investigation through trial.

Liang has extensive experience in Patent Trial and Appeal Board (PTAB) proceedings, including inter partes reviews (IPRs), where he is recognized as one of the most active attorneys representing petitioners. His notable PTAB work includes representing a leading streaming service provider in multiple challenges where over 85 claims were found unpatentable and a semiconductor manufacturer in IPRs concerning 802.11 and Bluetooth technology, resulting in all asserted claims being found invalid. In district court, he has secured favorable dismissals for clients, including a leading software provider in a Western District of Texas case and a ride-share provider in Central District of California and Delaware lawsuits. He is also listed as counsel for Marvell Semiconductor, Inc. as the petitioner in an IPR against Credo Technology Group Ltd. (IPR2025-01220), involving U.S. Patent No. 11,032,111.

Prior to his legal career, Mr. Liang worked as an engineer at Intel Corporation, providing him with a strong technical foundation for his practice. He is admitted to practice in California (SBN 281429), before the United States Patent and Trademark Office, the U.S. Court of Appeals for the Ninth Circuit, and the U.S. District Courts for the Northern, Central, and Western Districts of California, and the Western District of Texas.