Payson J. LeMeilleur

Payson J. LeMeilleur is a patent litigation attorney with over 25 years of experience, focusing primarily on representing patent owners in complex infringement disputes. His practice areas encompass highly technical subject matter, including electronic devices, wireless protocols (such as Bluetooth standards), computer networking, and pharmaceuticals. His case history demonstrates a consistent focus on the plaintiff side, representing patent holders in actions against major technology companies.

Mr. LeMeilleur is currently a partner at MacArthur James LLP. Prior to co-founding MacArthur James, he was a partner at the national intellectual property law firm Knobbe Martens Olson & Bear, LLP, where he also chaired the firm's Recruiting and Mentor Committees.

A notable aspect of his practice includes his work for One-E-Way, Inc. He served as counsel in One-E-Way, Inc. v. Apple Inc., a case involving patents related to wireless audio technology, specifically AirPods and Beats products. Although a Central District of California summary judgment of noninfringement was affirmed by the Federal Circuit in August 2023, he continues to represent One-E-Way in ongoing patent infringement actions against companies like Anker Innovations, Dell, and Samsung concerning wireless headphones and speakers compliant with Bluetooth standards.

Mr. LeMeilleur also possesses significant experience in post-grant proceedings before the Patent Trial and Appeal Board (PTAB), including Inter Partes Review (IPR) proceedings. He has appeared in IPRs representing patent owners, such as in Sony Corporation v. One-E-Way, Inc. (IPR2016-1639).

He earned his Juris Doctor from the University of Virginia and holds a Bachelor of Science in Physics, magna cum laude, from the University of Southern California. He is admitted to practice in California and Texas.