Contact Information:

MGaynor@cmjlaw.com
Main: (617) 737-3100
Direct: (617) 670-8518
Fax: (617) 737-1191

21 Custom House Street
Boston, MA 02110


Martin F. Gaynor III

Martin F. Gaynor III is a partner at Cooley Manion Jones LLP who specializes in trials and appeals before state and federal courts. Mr. Gaynor has represented a wide variety of clients in business litigation matters involving antitrust, trade regulation, insurance coverage, corporate governance, securities, legal malpractice, complex contracts, real estate, franchise disputes, construction, intellectual property and white collar criminal defense.

Representative matters:

  • Successfully defended industry leading retailer against federal antitrust claims by competitor alleging illegal conspiracy and attempts to monopolize market.
  • Obtained settlements in excess of $100,000,000 in insurance coverage litigation on behalf of client in case involving many legal issues of first impression.
  • Successfully defended pharmaceutical company against claims of fraud and violations of federal statutes related to its marketing practices.
  • Obtained multi-million dollar settlement on behalf of minority owner of power plant facility in complex corporate dispute concerning ownership and control of partnership.
  • Obtained multi-million dollar settlement on behalf of individuals alleging fraud and violations of securities laws.
  • Obtained multi-million dollar settlement on behalf of energy company in complex construction dispute.

Mr. Gaynor is admitted to practice in all Massachusetts Courts, the United States District Court for the District of Massachusetts and the United States Court of Appeals for the First Circuit. Mr. Gaynor graduated with honors from the University of Chicago in 1988 with a bachelor's degree in economics and from Boston College Law School in 1993.

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