Louis Tompros

Louis Tompros, an experienced first-chair trial and appellate litigator, is a Partner at WilmerHale. He makes the fast-moving and legally complicated field of intellectual property understandable for juries and judges. He has handled the most challenging patent, trademark and copyright matters at trial and on appeal, for high profile clients in technology, entertainment, and manufacturing, and he has been hailed as a "prizefighter" in the world of intellectual property litigation. He has successfully tried multiple intellectual property cases to verdict as lead trial counsel, has successfully argued multiple appeals before the Federal Circuit, and teaches patent trial advocacy at Harvard. Among Tompros’s first-chair trial successes in his representation of Bombardier Recreational Products, in which a federal jury returned a full defense verdict rejecting a $130 million trademark infringement claim brought by Jaguar Land Rover over its “Defender” trademark. Land Rover had previously won a similar case against BRP in the European Union, making this US jury trial win particularly significant, and earning Tompros the title of “Litigator of the Week” from The American Lawyer. In 2021, he secured a high-profile victory for recording artist Elizabeth Chan over singer Mariah Carey, in which the Trademark Trial and Appeal Board permanently rejected Carey’s attempt to register the trademark “Queen of Christmas.” The win resulted in widespread industry and media praise, including coverage in the New York Times, the Wall Street JournalVariety, and People. In addition, Tompros has handled complex and controversial trademark matters implicating questions of free speech in federal courts nationwide.