Senior Associate
Jim Brennan is a senior associate in the Litigation Practice Group. He is a member of the firm’s globally ranked data disputes practice. Jim represents clients in complex bet-the-company disputes, including in mass arbitrations before American Arbitration Association (AAA) and Judicial Arbitration and Mediation Services (JAMS), and putative class actions in state and federal courts across the US. Jim is Certified Information Privacy Professional (CIPP)/US-certified and advises clients on data privacy and cybersecurity matters involving a variety of federal and state privacy and security laws.
Jim has broad experience representing clients throughout all stages of litigation and arbitration.
As part of his data disputes practice, Jim has litigated cases involving every major theory of liability advanced by the plaintiffs’ bar to date, including but not limited to the Electronic Communications Privacy Act (ECPA), the California Invasion of Privacy Act (CIPA), the Illinois Biometric Privacy Act (BIPA) and the Video Privacy Protection Act (VPPA), among other laws.
Prior to joining the firm, Jim served as a law clerk for Chief Judge D. Brooks Smith of the US Court of Appeals for the Third Circuit. Before that, he practiced at an international law firm in New York, specializing in complex commercial litigation. While in law school, Jim served as an executive editor of New York University Law Review.
Speaking Engagements
Co-presenter, “Mass Arbitration Year in Review and Outlook for 2026: Key Decisions, New Procedural Rules, Bellwether Cases,” BARBRI, March 9, 2026.
Moderator, “Litigation Update on Mass Arbitrations and Class Actions in Data and Privacy Space”, ABA TIPS 2026 Cybersecurity Data Privacy Conference, March 5, 2026.
Keynote speaker, “Cyber Security & Legal Technology: Is This the Winning Formula?” Global Legal ConfEx, November 17, 2022.
Publications
Co-author, “United States of America (USA) – New York and Washington D.C.,” Delos Guide to Arbitration Places, July 2020.