Mark Weinstein

Mark Weinstein is a patent litigation attorney with extensive experience defending technology companies in complex disputes, primarily focusing on the defendant side. His practice encompasses a broad range of technologies, including computer software and hardware, Internet applications, electronic transactions, e-commerce, computer networking, entertainment software, semiconductors, and medical devices.

Currently a partner at Cooley LLP, Mr. Weinstein has represented major technology clients such as Meta Platforms, Inc. (formerly Facebook, Inc.) in numerous patent infringement actions. This includes significant involvement in matters related to EXPRESS MOBILE, INC. v. Facebook, Inc. and its associated inter partes review (IPR) proceedings. His prior affiliation includes serving as of counsel at Orrick, Herrington & Sutcliffe, where he was also involved in EXPRESS MOBILE, INC. v. Facebook, Inc., and previously as a managing partner at a large international law firm's Silicon Valley office.

Beyond the Express Mobile litigation, his notable representations include defending Facebook in over a dozen patent infringement cases, such as Yahoo! Inc. v. Facebook, Inc. and Leader Technologies, Inc. v. Facebook, Inc., and securing a trial win for Facebook in a case targeting the "Like" button. He also represented EMC Corporation against Hewlett-Packard Company in a patent suit that resulted in a substantial $325 million settlement for EMC.

Mr. Weinstein possesses considerable experience in Patent Trial and Appeal Board (PTAB) proceedings, including numerous IPRs, Post-Grant Reviews (PGRs), and Covered Business Method (CBM) reviews, often representing petitioners like Meta Platforms, Inc. He is admitted to the State Bar of California. He earned his J.D. from the University of San Diego School of Law in 1997 and a B.S. from the University of California, San Diego in 1992.