John Morrissey
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Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.
About John Morrissey
John J. Morrissey is a Senior Trial Attorney at Sweeney Merrigan Personal Injury Lawyers in Boston with more than three decades of experience in personal injury law. His litigation experience covers complex tort claims including motor vehicle accidents, slips and falls, alcohol-related injuries, premises liability, workplace and construction safety claims (including crane failures), and commercial and real estate litigation.
Morrissey obtained a jury verdict with interest in excess of $5.8 million in a personal injury lawsuit. He volunteered as an attorney representing victims of the Boston Marathon bombing through the Marathon Bombing Victim's Legal Assistance Program.
Morrissey has served as President of the Massachusetts Bar Association, Chair of the Joint Bar Committee on Judicial Appointments, and Chair of the Massachusetts Board of Bar Overseers of the Supreme Judicial Court. He earned his Juris Doctor from Boston University School of Law in 1992 and was admitted to the Massachusetts Bar that year.
Proven verdicts and settlements at Sweeney Merrigan Personal Injury Lawyers
These results are credited to Sweeney Merrigan Personal Injury Lawyers. A result appears under an attorney's own name only when a published source names them as counsel on the case.
The family of Greg Sharrigan, killed when a gas leak ignited at his Maynard home in September 2021, sued Eversource for $450 million, alleging the utility detected the underground leak three years before the fatal explosion and never fixed it.
Peter Merrigan of Sweeney Merrigan Personal Injury Lawyers represented 125 Massachusetts cities and towns in claims against Johnson and Johnson and the three largest opioid distributors, recovering $84.1 million in aggregate from the national opioid settlements.
A Middlesex Superior Court jury awarded $56 million on July 22, 2026 to Malcolm Carnwath, a 78-year-old retired realtor from Newburyport, Massachusetts. An Amazon delivery driver fell asleep and crossed the center line in Portsmouth, New Hampshire, on Nov. 16, 2024, causing a head-on crash. Mr. Carnwath suffered a cardiac arrest, multiple strokes with permanent brain injury, and a below-knee amputation of his left leg. Amazon accepted liability days before the two-day damages trial.
A Franklin County Superior Court jury awarded $10 million in November 2021 to a young woman who testified that a stonemason employed by her father sexually abused her for three to four years, beginning when she was 8. The defendant had been acquitted of criminal charges in 2018. It was the largest verdict in the county's history, and with interest the Greenfield Recorder put it at about $12 million. The plaintiff sued under the pseudonym Jane Doe.
Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.
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Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.








