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Kelley Mahoney concentrates her practice on general liability, products liability, toxic tort and premises liability cases. She has represented a broad range of clients in state and federal court, including manufacturers, distributors, contractors, premise owners and various businesses. She is involved in all aspects of litigation, including investigation, discovery and depositions, pleading preparation, trial preparation, trial, and settlement. She has drafted, opposed and successfully argued numerous motions, including motions for summary judgment and summary adjudication, motions to compel, and motions for protective orders, among other motions. She also has extensive trial experience in multi-million-dollar actions and has tried cases to verdict as second chair co-counsel.

Prior to joining MG+M, Kelley defended professionals and professional entities, including attorneys, accountants, law firms, accounting firms, corporate directors and officers, trustees, and fiduciaries in professional liability litigation.

Kelley also has experience in corporate and business law matters. She has advised various business entities on choice of entity issues, formation, dissolution, mergers and acquisitions, commercial contracts, and corporate governance.


  • Won a jury verdict on behalf of two well known Massachusetts construction companies accused of negligence following a jobsite accident.


  • Thomson Reuters, Rising Stars, 2022


  • University of the Pacific, McGeorge School of Law, JD
  • University of California, Berkeley, BA

Bar Admissions

  • California
  • Maine

Court Admissions

  • US Court of Appeals for the Ninth Circuit
  • US District Court, Northern District of California
  • US District Court, Central District of California
  • US District Court, Eastern District of California