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Larry D. Thompson, Jr. is an intellectual property attorney and one of the three founding partners of Antonelli, Harrington & Thompson. Before founding the firm, he was a senior associate with Weil, Gotshal & Manges, where he worked in the firm’s Patent Litigation group and Technology and Intellectual Property Transactions group. He served as law clerk to the Hon. J. Michael Luttig, Circuit Judge, U.S. Court of Appeals for the Fourth Circuit, prior to joining Weil.

Mr. Thompson has substantial patent litigation and arbitration experience. He has conducted a variety of motion practice, discovery, and pre-trial activities, particularly relating to discovery motions, summary judgment motions, motions in limine, trial briefs, and jury instructions. He has worked on all phases of complex, multinational patent-license arbitration. He is skilled at analyzing difficult and novel legal problems under compressed timelines. A large part of his practice has involved negotiating and drafting patent litigation settlements and related agreements, as well as counseling clients on their rights under such agreements.

Mr. Thompson also has broad transactional experience, having represented clients in mergers and acquisitions, distressed sales, strategic alliances and other corporate deals. He has negotiated and drafted technology and intellectual property agreements such as patent and trademark license agreements, technology development agreements, and software license agreements, as well as IP representations, warranties and covenants in varying forms of corporate transactions. He is also experienced with IP due diligence issues.

While at Weil, Mr. Thompson spent four months working in-house on loan to General Electric Company at its corporate headquarters.

Before law school, Mr. Thompson worked as a patent agent and technical advisor. During that time, he specialized in preparing and prosecuting patent applications in the chemical and mechanical arts, and assisted in preparing patentability and validity opinions. He is a registered patent attorney.

Mr. Thompson has written on several IP issues. His publications include “Adrift on a Sea of Uncertainty: Preserving Uniformity in Patent Law Post-Vornado Through Deference to the Federal Circuit,” 92 Geo. L.J. 523-609 (2004), available at

In 2003, Mr. Thompson received his J.D. from New York University School of Law, graduating cum laude. He attended NYU on a Dean's Scholarship and won the Edward Weinfeld Prize for distinguished scholarship in Federal Courts, Civil Procedure, Evidence, and/or Trial Practice.

Mr. Thompson received his B.S. in Chemical Engineering from Rice University in 1998. In 1997, he won the Bob Quinn Award as the Rice Male Student Athlete of the Year and was named the TSPE Rice University Engineer of the Year.


  • State Bar of Texas
  • U.S. District Court for the Eastern District of Texas
  • U.S. District Court for the Southern District of Texas
  • U.S. Patent & Trademark Office
  • U.S. Court of Appeals for the Federal Circuit
  • Supreme Court of the United States


  • B.S., Chemical Engineering, Rice University, 1998
  • J.D., New York University, 2003


  • Author, “Adrift on a Sea of Uncertainty: Preserving Uniformity in Patent law Post-Vornado through Deference to the Federal Circuit,” 92 Geo. L.J. 523-609 (2004), available at
  • Co-Author, “Quanta: Supreme Court Expands the Scope of Exhaustion; Redefines Licensing Principles,” Patent Strategy Monthly, August 2008 (with Amber H. Rovner and Charan J. Sandhu)
  • Co-Author, “Notable Patent Remedies Cases (January 1, 2004 To Present),” 10th Annual Advanced Patent Law Institute, The University of Texas School of Law, October 2005 (with David J. Healey and Brett C. Govett)
  • Author, “Adrift on a Sea of Uncertainty,” The Magazine of the New York University School of Law, Autumn 2003