David E. Sipiora

David E. Sipiora (Retired)
Kilpatrick Townsend & Stockton LLP

David E. Sipiora is a retired first-chair trial lawyer with a practice focused on high-stakes patent litigation. His experience encompasses a broad range of technologies, including electronics, telecommunications, microprocessors, computer memory, databases, wireless communications, and satellite technologies. During his career, he served as lead counsel in hundreds of patent cases across major patent venues in the United States. Sipiora retired from Kilpatrick Townsend & Stockton in April 2020 after over two decades as a partner with the firm and its predecessor, Townsend, Townsend & Crew.

Based on court records and biographical data, Sipiora represented both plaintiffs and defendants. The provided case list shows him as lead counsel for the plaintiff in Corel Software LLC v. United States Patent & Trademark Office. Court filings from other matters show him representing plaintiffs such as Avago Technologies and defendants including LSI Corporation. This indicates a balanced practice, serving a variety of clients rather than a fixed preference for plaintiff or defense work. From 2011 to 2016, he was Co-Chair of the Patent Litigation Group at Kilpatrick Townsend, overseeing a team of approximately 80 lawyers.

Sipiora has experience in post-grant proceedings before the Patent Trial and Appeal Board (PTAB). In 2017, for instance, he was admitted pro hac vice to represent a petitioner in an inter partes review (IPR), with the Board noting his extensive experience litigating the patent at issue in a related district court case. His litigation practice also involved significant cases such as representing a cell phone camera lens manufacturer in a defense against infringement claims exceeding $100 million and a manufacturer of mass transit technology, securing favorable outcomes in both.

Mr. Sipiora has been a member of the California bar since 1986, the New York and D.C. bars since 1990, and the Colorado bar since 1998. He served as a law clerk in the U.S. District Court for the Northern District of California and as an Assistant U.S. Attorney for the Southern District of New York.