Paul Margulies concentrates his practice on intellectual property and patent litigation in district courts around the country, at the appellate level, and before the US Patent and Trademark Office. Mr. Margulies has represented both plaintiffs and defendants in cases involving a wide variety of technologies, from wireless networking and image sensors to biologics and medical devices, and has experience with every stage of litigation through and including trial and appeal. He also litigates cases involving claims of copyright and trade dress infringement, misappropriation of trade secrets, and unfair competition.

In addition to his litigation practice, Mr. Margulies advises companies on cybersecurity and privacy issues revolving around technology.


  • Sanofi and Regeneron in remand proceedings in the District of Delaware, defending against patent enforcement action brought by Amgen relating to anti-PCSK9 antibodies that are asserted against Sanofi and Regeneron's Praluent therapeutic antibody. Sanofi and Regeneron prevailed in invalidating Amgen’s asserted patent claims.
  • Google in patent litigation in the Eastern District of Texas involving various hardware, software, and web-based services.
  • Nintendo in the Southern District of New York in a case relating to a 3D image capture and display patent asserted against the Nintendo 3DS handheld gaming device. Nintendo prevailed on remand following the Federal Circuit’s reversal in Nintendo’s favor of the district court’s claim construction.
  • Time Warner Cable in the District of Kansas in a case brought by Sprint alleging infringement of VoIP patents.
  • Ateliers de la Haute Garrone in the District of Delaware against Brotje Automation, in which the jury returned a verdict in favor of Ateliers for all asserted claims, including patent and trade dress infringement and unfair competition claims relating to aviation riveting technology. The jury awarded compensatory and punitive damages.
  • CA (formerly Computer Associates), a major software company, in a trade secret and copyright infringement case in the Eastern District of New York where the client received a cash settlement of $50 million on the eve of a jury trial.
  • CA Technologies (formerly Computer Associates) in an action in the Eastern District of Texas brought by Information Protection and Authentication of Texas (IPAT), a patent holding company and an Acacia entity. The patents-in-suit related to personal firewall technology. The case settled very favorably for CA after uncovering anticipatory prior art.
  • Time Warner Cable in the Eastern District of Texas in a multi-patent case brought by a non-practicing entity relating to networking technology.
  • Rolls-Royce in the Eastern District of Virginia against UTC for infringement of a patent relating to jet engine fan blade design. The case settled as part of a global settlement between the parties.
  • Pfizer in a patent infringement case against Watson Pharmaceuticals based on Watson’s ANDA seeking FDA approval to sell a generic transplant rejection prevention drug, Rapamune®. Pfizer prevailed after a bench trial in the District of Delaware.


  • J.D., Benjamin N. Cardozo School of Law, 2007, cum laude, Notes & Comments Editor for the Journal of Comparative and International Law,
  • B.S., Computer Science, Columbia University, 2004
  • B.A., with Honors, Jewish Theological Seminary of America, 2004, magna cum laude
  • New York
  • District of Columbia
  • U.S. Patent and Trademark Office
  • U.S. District Court, Eastern District of New York
  • U.S. District Court, Southern District of New York
  • U.S. District Court, District of Columbia
  • U.S. District Court, Eastern District of Texas
  • U.S. Court of Appeals for the Federal Circuit
  • PTAB/TTAB CBM Subcommittee, Federal Circuit Bar Association (2016-2019)


Email Disclaimer