Terry Ahearn


  • Terry Ahearn
  • Phone: +1 650 847 4144

    Import to Address Book

  • Duane Morris LLP
    260 Homer Avenue, Suite 202
    Palo Alto, CA 94301-2777

Terry Ahearn is a trial lawyer and represents clients in intellectual property and other complex commercial litigation related to high technology. Terry also represents clients in data protection and cybersecurity. Terry has significant experience in complex high-technology litigations, including pre-litigation investigations, budgeting and staffing, conducting large-scale discovery, preparing expert testimony, and managing and participating in all phases of trial and appeal.

Terry’s trial experience includes multiple trials before the federal district courts, hearings before the United States International Trade Commission and arbitrations before the International Centre for Dispute Resolution, American Arbitration Association and JAMS. Terry has appeared before the U.S. Court of Appeals, Federal Circuit, and has participated in negotiations with the United States Attorney, Federal Bureau of Investigation and Securities and Exchange Commission.

Terry has been an adjunct lecturer and presenter at Santa Clara University School of Law on various intellectual property and commercial litigation topics. Terry is a certified CIPP/US by the International Association of Privacy Professionals.

Terry is a graduate of Santa Clara University School of Law, where he was articles editor of the Santa Clara Law Review, and a cum laude graduate of Fordham University.

Areas of Practice

  • Intellectual Property Law

  • Patent Litigation

  • Cybersecurity and Technology

  • Commercial Litigation

Representative Matters

  • ImageKeeper v. Wright Flood, District Court of Nevada, Defense of Trade Secret Misappropriation and Related Cause of Action.


  • U.S. District Court for the Northern District of California
  • U.S. District Court for the Eastern District of California
  • U.S. Court of Appeals for the Federal Circuit
  • California


  • Santa Clara University School of Law, J.D., 2001
    - Articles Editor, Santa Clara Law Review
  • Fordham University, B.A., cum laude, 1998


  • Duane Morris LLP
    - Partner, 2019-present

  • Lewis, Roca, Rothgerber, Christie LLP
    - Partner and Co-Managing Partner Silicon Valley, 2017-2019

  • McDermott Will & Emery LLP
    - Partner, 2008-2017
    - Associate, 2004-2007

  • Townsend and Townsend and Crew LLP
    - Associate, 2002-2004

  • Howrey, Simon, Arnold & White
    - Associate, 2001-2002

Professional Activities

  • Santa Clara University School of Law
    -Former Member, High Tech Law Institute Advisory Committee

  • International Association of Privacy Professionals (IAPP) with CIPP/US Data Privacy and Cybersecurity Certification

Honors and Awards

  • Named an IP Star by Managing IP Magazine, 2013, 2014, 2015, 2018, 2020-2023

Selected Publications

  • Author, "U.S. Supreme Court Finds Room for Compensation of Foreign Lost Profits," International Comparative Legal Guide, Patents 2019

  • Co-Author, "Supreme Court Case Could Have Huge Impact On Challenging Patents," Intellectual Property Blog, November 2017

  • Co-Author, "Supreme Court Case Could Have Huge Impact On Challenging Patents," Intellectual Property Blog, November 2017

  • "Oil States Energy Services LLC v. Greene’s Energy Group, LLC," Intellectual Property Blog, June 2017

  • Author, "U.S. Supreme Court Agrees Upon Restricted Venue for Patent Cases," International Comparative Legal Guides, Patents 2018

  • Author, "eDiscovery: Cooperation and Proportionality: The Past, Present and Future," The Complex Discovery Weekly E-Discovery Digest, May 2017

  • Author, "eDiscovery: Pre-Emptive Measures to Keep Costs Down," McDermott Will & Emery, International News, Focus on Compliance, Issue No. 3, 2014

  • "Dilution By Blurring Under the Federal Trademark Dilution Act of 1995: What Is It and How Is It Shown?" 41 Santa Clara L. Rev. 893, 2001

Selected Speaking Engagements

  • Presenter, "Preparing for the CCPA: Reviewing and Updating Privacy Policies and Agreements for Compliance," The California Consumer Privacy Act of 2018 Webinar Series, Duane Morris LLP, June 20, 2019