Attorney Matthew T. Marin founded Marin & Murphy Law Firm in 2008 and has spent 17 years building one of Rhode Island's most recognized criminal defense practices — carrying 444 five-star Google reviews and a 5.0 rating across all firm locations. He successfully challenged Rhode Island's DUI Rights for Motorists form in State v. Zimmerman, forcing the Attorney General's Office to revise it statewide. In State v. Corcoran, his suppression argument at the Superior Court level became the foundation for a Rhode Island Supreme Court ruling that established statewide Miranda precedent for DUI investigations across Rhode Island. He has been recognized by Super Lawyers for 11 consecutive years and named to the National Trial Lawyers Top 100.
Attorney Matthew T. Marin founded this firm in 2008 with a single conviction: that effective criminal defense requires understanding how the prosecution thinks. Before entering private practice, he worked at the Rhode Island Department of Attorney General as a Rule 9 student attorney — representing the State in probation and bail violation hearings and prosecuting breathalyzer refusal cases at the Rhode Island Traffic Tribunal. He has been on both sides of the courtroom.
That prosecution background shaped everything that followed. Where other defense attorneys work backwards from a charge, Attorney Marin starts by asking how a prosecutor would build the case — then identifies where the constitutional vulnerabilities lie. That approach produced two of the most significant DUI legal victories in Rhode Island's recent history: the Zimmerman form challenge and the Corcoran Miranda precedent. It also earned him 11 consecutive Super Lawyers recognitions — peer acknowledgment sustained across an entire career, not a single year.
Over 17 years, Attorney Marin expanded the firm from a solo DUI defense practice to a five-office, multi-attorney operation handling the full spectrum of Rhode Island criminal defense — from first-offense DUI in District Court to felony and federal charges in Superior Court and U.S. District Court. The firm now carries 444 five-star Google reviews and is rated 5.0 across all locations.
Attorney Marin continues to lead the firm's strategic operations and oversees its most complex criminal matters. He has been selected as a speaker at the Mass Torts Made Perfect Conference in 2024 and 2025 and holds bar admission in four states and U.S. District Court — a range that reflects both the depth of his Rhode Island practice and the breadth of his litigation experience.
