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Lionel Lavenue



Lionel Lavenue is a partner at Finnegan who is located in the Reston, VA office. His practice focuses on patent trial litigation, including 19 bench or jury trials, and on creating and managing large patent portfolios. With experience in almost 200 patent cases, he has managed or served as first chair in numerous district court litigations, including more than 60 cases in the E.D. Texas, almost a dozen patent infringement cases and/or matters under Section 1498(a) in the U.S. Court of Federal Claims, more than a dozen disputes under Section 337 before the U.S. International Trade Commission (ITC), and multiple arbitrations.

Lionel has argued dozens of Markman hearings. He has directed the discovery for numerous complex cases and disputes, and he has taken or defended over 200 depositions. He also has briefed and argued numerous patent/IP appeals at the U.S. Court of Appeals for the Federal Circuit.

With experience in the preparation of over 1,850 patent applications, Lionel also oversees the creation and management of large corporate patent portfolios. He has organized and managed numerous large domestic and foreign patent portfolios. His prosecution experience covers an array of technologies, including those related to the financial services, electrical, aerospace, and automotive industries.

Lionel’s practice includes litigation, patent applications, and opinion work related to business methods, computers, software, and electrical and mechanical devices (including medical devices, especially medical device software applications). He has also directed numerous ex parte and inter partes patent reexamination proceedings, including almost 100 “defensive reexaminations” used during litigations. As one of the first to challenge a patent via the inter partes review (IPR) procedure, he has led the filing of more than 115 IPR petitions and covered business method (CBM) petitions.

Recent Articles by Lionel Lavenue

Induced Infringement: The Knowledge Requirement and When it is Established

To succeed on a claim of induced infringement, a patent owner must show that the accused infringer (1) actively encouraged infringement, (2) knew that the acts they induced constituted patent infringement, and (3) actuated direct patent infringement by those encouraging acts. In many courts, the knowledge requirement can be satisfied by service of a complaint for patent infringement itself. So, the accused infringer can start to incur liability at the onset of litigation. In the minority of courts, only pre-suit knowledge can satisfy the knowledge requirement. In those jurisdictions, the plaintiff must show the accused infringer knew about the alleged infringement before the onset of litigation. The amount of evidence required to show pre-suit knowledge at the pleading phase is an open question.