Brian J. McMahon - Gibbons  P.C.

Brian J. McMahon

Listed in Best Lawyers since 2005

Brian J. McMahon chairs the firm's Business & Commercial Litigation Department and is a member of the firm's Executive Committee. Mr. McMahon's litigation practice encompasses a wide range of complex corporate and commercial disputes, including securities litigation, merger and acquisition disputes, partnership disputes, intra-corporate and shareholder derivative disputes, and complex contract disputes. Mr. McMahon has litigated and tried jury and non-jury cases in the state and federal courts throughout the regional metropolitan area. He has played the leading role in numerous large class actions, enforcement proceedings with federal and state regulatory agencies, and complex adversary proceedings in the United States Bankruptcy Courts. Mr. McMahon has been the primary architect of numerous complex and multifaceted settlements involving parallel and related proceedings pending in several different courts and regulatory agencies. 

Additional Information

Other Court Admissions
  • United States District Court for the District of New Jersey
  • United States Court of Appeals for the Third Circuit
  • United States Court of Appeals for the Seventh Circuit
  • United States Court of Appeals for the Ninth Circuit
  • Supreme Court of the United States
  • Colgate UniversityBA 1974Seton Hall Law SchoolJ.D. 1977
    Litigation Counsel of America Lifland Inn of Court American Bar AssociationAmerican Judicature Society

    Client Comments

    "Brian McMahon of Gibbons is a pleasure to work with when faced with litigation. He and his extremely competent team of attorneys are timely, succinct in communication, and have a great reputation in the legal community in New Jersey. Brian has a great manner about him and is always easy to work with, even during stressful litigation. The work product produced by Brian and his department is always top quality."

    -Mary Majewski, Esq.
    Advance Realty Group

    "Brian McMahon is our quarterback at the Gibbons law firm. Mr. McMahon has a keen understanding of our business and is able to combine both the business issues with legal solutions that work. We consider Mr. McMahon as a valuable resource and a business partner."

    -Charles P. Lee, Jr.
    The Muralo Company

    Office Location

    One Gateway Center
    Newark, NJ 07102-5310
    United States

    Lawyer of the Year Awards

    2015 Lawyer of the Year in Litigation - Securities of the Newark Metro Area2013 Lawyer of the Year in Litigation - Antitrust of the Newark Metro Area
    Brian J. McMahon has earned a Lawyer of the Year award for 2015!Brian J. McMahon has earned a Lawyer of the Year award for 2013!

    Practice Areas

    Commercial Litigation (Antitrust, Complex Litigation, Securities, Stockholders' Suits)
    Litigation - Antitrust
    Litigation - Bankruptcy
    Litigation - Securities