Thomas P. McMahon

Mr. McMahon has successfully assisted clients with antitrust litigation and counseling and other complex litigation matters for over 35 years. Mr. McMahon has handled cases for plaintiffs and defendants in federal and state courts in Colorado and elsewhere. He has extensive experience representing clients at both the trial and appellate levels, including the U.S. Supreme Court and the (former) Civil Aeronautics Board, and has acted as lead and local counsel in national, regional and state class action type lawsuits. Mr. McMahon also has extensive experience advising and representing physicians, medical groups and other health care entities regarding antitrust, competition, discipline, licensing and privileging matters in internal, state and federal administrative and judicial proceedings. He served for a number of years as Chief of the Colorado Attorney General’s nationally-renowned Antitrust Unit, with responsibility for directing all antitrust affairs on behalf of the State of Colorado. While with the Colorado Antitrust Unit, Mr. McMahon served as a Vice-Chair of the National Association of Attorneys General Antitrust Multi-State Task Force. He is a member and past Chair of the Antitrust Subsection of the Colorado Bar Association, and a member of the American Bar Association's Antitrust Law Section., of which he is a past Vice-Chair of the State Antitrust Enforcement Committee. Mr. McMahon has written and lectured widely on antitrust matters. He has published numerous articles and contributed to several books relating to antitrust law; appeared on the PBS 'MacNeil-Lehrer Report' and the NBC 'Today Show' as a commentator on antitrust issues; taught sessions of the antitrust course at the University of Denver College of Law; and made presentations both as a faculty member on numerous national, regional and state Continuing Legal Education programs in antitrust and as a lecturer on antitrust matters before a variety of national, regional and local professional groups. In a prior life, Mr. McMahon was a member of the USAF JAG Corps, where he served as an Area and Circuit Defense Counsel with the USAF Trial Judiciary. A Michigan native, he obtained his B.A. “With High Honor” from Michigan State University, where he was a Merit Scholar and member of The Honors College. Mr McMahon earned his J.D. Cum Laude from the University of Michigan Law School, where he served as a Note and Comment Editor for the Michigan Law Review and graduated Order of the Coif. He has been a “virtual” Colorado native ever since.