Matthew serves as the Director of the Casualty Department, Chairman of the firm’s Board of Directors, and a member of Marshall Dennehey’s three-person Executive Committee. This governing body oversees the firm's daily operations and drives the implementation of strategic initiatives for the Am Law 200 firm. As Director of the Casualty Department, the largest of the firm’s four legal divisions, Matthew manages the administrative functions and provides strategic leadership for over 250 attorneys across 19 offices.
An experienced litigator with a broad legal background gained from working at specialized firms in New York and New Jersey, Matthew brings the perspective of having defended individuals, insurance companies, and major corporations in complex litigations within a variety of practice areas.
Matthew joined Marshall Dennehey as a shareholder and co-chair of the maritime litigation practice group in June of 2008. He and his litigation team routinely handle high-exposure cases in the fields of premises liability, product liability, restaurant/bar liability, marine, inland marine, construction accidents, automobile, insurance coverage, condominium/community association law, medical malpractice and subrogation.
Based upon his experience, skill, and effectiveness at trial, Matthew has been certified by the Supreme Court of New Jersey as a Civil Trial Attorney, an achievement attained by less than two percent of lawyers in New Jersey. He has 10 published opinions and has argued before the Supreme Court of New Jersey on multiple occasions. Matthew was also one of the first trial attorneys to participate in the pilot program that permitted jurors to question witnesses and was asked to lecture at the ATLA Boardwalk Seminar as the defense speaker on this topic.
In 1991, Matthew began his career at Donovan, Parry, Walsh & Repetto, a New York firm that pioneered maritime and insurance law, where he handled a variety of challenging matters involving Jones Act seaman claims, insurance coverage disputes, hull and cargo liability actions, consumer fraud, premises liability, subrogation, product liability, and various commercial cases. He also achieved the status as a Proctor in Admiralty. In 1996, Matthew joined the well-known medical malpractice defense firm of McDonough, Korn & Eichhorn, which went on to become McDonough, Korn, Eichhorn & Schorr subsequent to his ascension to partnership in 1999. During his 12 years with the firm, he managed and helped the firm develop maritime, insurance, community association law, and casualty practices. He also became a seasoned trial lawyer taking dozens of malpractice and casualty cases to trial with a success rate of approximately 95 percent.
Matthew graduated cum laude from the State University of New York at Albany in 1988 and received his juris doctor from Fordham Law School in 1991, where he was named a Leonard F. Manning Scholar. Matthew is admitted to the bars of New York and New Jersey.
Honors & awards
Litigation Management Institute, Graduate 2013 (CLMP)
New Jersey Super Lawyer
2011
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Year joined
2008
Certification/Specialties
Certified by the Supreme Court of New Jersey as a Civil Trial Attorney, 2005
Certified Proctor in Admiralty, 1996
Thought Leadership
Marshall Dennehey Promotes James Cole and Sunny Sparano to Lead The Firm’s Professional Liability Department and Announces New Board of Directors Appointments
January 5, 2026
Marshall Dennehey announced today that James H.
Marshall Dennehey Named a 2026 'Best Law Firm' In Multiple Practice Areas by Best Lawyers
November 10, 2025
Marshall Dennehey has been named a '2026 Best Law Firm' in multiple practice areas, both nationally and across numerous regions of the country, by Best Lawyers .
Liberty Mutual Insurance Names Marshall Dennehey External Law Firm Partner of the Year
October 24, 2025
Marshall Dennehey is honored to accept the External Law Firm Partner of the Year Award from Liberty Mutual Insurance.
Marshall Dennehey Again Named to BTI Consulting’s Client Service A-Team
August 6, 2025
Marshall Dennehey has once again been recognized as a leader in client service, earning a spot on BTI Consulting’s Client Service A-Team 2025, which honors law firms delivering the highest levels of service to corporate clients.
Marshall Dennehey Named an “Innovation Standout” In BTI Report
June 24, 2025
Marshall Dennehey has earned recognition as an “Innovation Standout” in the BTI Law Firm Innovation Icons 2025 report.
Classes/Seminars Taught
Autonomous Vehicles: The Rise of the Machines - Moderator, ILG Virtual Conference, March 25, 2021
Negligent Security: Foreseeable Crime - Believable Risk - Moderator, ILG Virtual Conference, March 22, 2021
Impact of Long Shore and New York Labor Law, the Jones Act and McBride Decision on Punitive Damages Under Maritime Law, Navigators Insurance Marine Department, April 2015
New Jersey Contractual Indemnity and Additional Insured Issues, Zurich Insurance, April 2015
Advanced Trial Strategies, National Business Institute, Newark, NJ, December 2014
Know Before You Go, CLM Claims College - Property School, Faculty, Philadelphia, PA, September 2014
Transportation Claims and Recovery, Travelers Insurance, April 2013
CLE Seminar: Settlements and Releases, June 5, 2009