Gregory M. McMahon - Maron Marvel

Gregory M. McMahon


Greg McMahon is an experienced civil litigator with a practice focused on products liability, premises liability, environmental and mass tort matters pending in both state and federal courts.

Greg serves as regional trial counsel for a number of companies in high stakes cases involving catastrophic injuries and multi-million dollar disputes. He is lead counsel on many of the firm’s complex matters representing defendants ranging from Fortune 500 companies to small businesses. Greg’s clients include manufacturers, suppliers, premises owners and contractors operating in a wide spectrum of industries including aviation, energy, automotive, trucking, construction, medical device and consumer products.

Court admissions

United States District Court for the Northern District of Illinois

Organizations/Committee Memberships

Chicago Bar Association

Professional Recognition

He was named to the 2011 Illinois Rising Stars® list as seen in the Illinois Super Lawyers magazine.

Bar admissions



DePaul University College of Law (J.D., 2002)

University of Southern California (B.A. in Finance, 1996)