Lionel M. Lavenue focuses his practice on patent trial litigation and strategic patent portfolio management. With experience in over 220 patent cases, Lionel has served as lead counsel in more than 60 district court litigations, including extensive work in the Eastern District of Texas. He has handled nearly a dozen patent infringement matters under 28 U.S.C. § 1498(a) before the U.S. Court of Federal Claims, over a dozen Section 337 disputes before the U.S. International Trade Commission, and multiple arbitrations.
Lionel has argued dozens of Markman hearings and directed discovery in complex disputes, taking or defending more than 250 depositions. He has also briefed and argued numerous appeals before the U.S. Court of Appeals for the Federal Circuit.
In addition to litigation, Lionel has prepared nearly 2,500 patent applications and manages large domestic and international patent portfolios. His prosecution experience spans technologies in financial services, electrical systems, aerospace, automotive, and medical devices. He works closely with innovators in artificial intelligence (AI), advising on patent strategy for machine learning, data processing, and automated decision-making technologies.
Lionel’s practice includes opinion work and litigation involving business methods, software, and mechanical/electrical devices. He has directed nearly 100 defensive patent reexaminations and led the filing of almost 200 inter partes review (IPR) and covered business method (CBM) petitions, including some of the earliest IPR challenges.
With deep experience in government contract-related patent disputes, Lionel holds Public Trust clearance and previously held Top Secret and Code Word clearances. A Fulbright Scholar, he studied international IP law at the Max Planck Institute in Munich. Lionel frequently lectures on IP issues in aviation and aerospace, including UAV and rotorcraft technologies. He is recognized by several leading legal publications for his national and regional excellence in patent law.
Updated Oct 2025
