Charles McMahon

Charles M. McMahon is a first-chair litigator at Benesch Friedlander Coplan & Aronoff LLP, where his practice encompasses patent, trademark, copyright, trade secret, and unfair competition law. He has extensive experience in a broad array of technical areas, including wireless communications, solid-state electronics, encryption systems, vehicular transmission systems, digital imaging systems, electronic measurement devices, lithium batteries, software applications, and online business-to-business exchange systems.

McMahon represents domestic and multinational clients in federal district courts, before the Patent Trial and Appeal Board (PTAB), the International Trade Commission (ITC), the Court of Appeals for the Federal Circuit, and the Supreme Court. While the provided data tracks one plaintiff-side appearance, his practice profile and notable cases indicate significant experience defending clients. He has, for instance, secured a unanimous defense verdict in a patent infringement action involving automated heavy-duty truck transmission technology (a matter completed prior to joining Benesch) and achieved a finding of no infringement for a cellular communications device supplier in an ITC investigation. His firm also announced securing a "total surrender from VisionX Technologies" in a patent dispute.

His PTAB experience includes defending a favorable PTAB ruling affirmed by the Federal Circuit in Technology Properties Limited v. ZTE Corporation (2019), and he has been appointed counsel in recent inter partes review (IPR) proceedings. Prior to joining Benesch, he was formerly with Brinks Gilson & Lione.

McMahon is a registered patent attorney. He earned his J.D. from George Washington University Law School and holds a B.S. in Electrical Engineering from the University of Notre Dame. He is admitted to practice in Illinois, several U.S. District Courts, the U.S. Court of Appeals for the Federal Circuit, and the Supreme Court of the United States.