David J. McMorris

Mr. McMorris is a trial lawyer and directs Thornton Law Firm LLP health care subrogation and workplace injury practice. He is a member of the Massachusetts and New York bars and the American Association for Justice. Mr. McMorris’ trial experience has included several jury verdicts in excess of $1 million dollars in cases involving products liability, construction accidents, toxic exposures, lead paint poisoning, and asbestos exposure. Mr. McMorris was appointed by the federal district court to serve as plaintiff’s liaison counsel in asbestos litigation for the United States District Court for the District of Massachusetts and has served in that position since 1993; he was the plaintiff’s liaison counsel for the Massachusetts Superior Court’s Massachusetts Asbestos Cases Consolidated Docket from 1993 - 2017. He is a graduate of the State University of New York and of Suffolk University Law School. He has been a guest lecturer on latent occupational disease and complex litigation at Tufts University and Boston University Law School. Mr. McMorris has been named in Best Lawyers in America for many years, as well as a Massachusetts Super Lawyer for 15 years. He was named one of the Top 100 Trial Lawyers by the American Trial Lawyers Association, and one of the Top 100 Civil Trial Lawyers in Massachusetts by the National Trial Lawyers. The American Lawyer selected him as a 2019 Top Rated Lawyer in Mass Tort Law. He was selected as one of New England's 2020 Top Rated Lawyers by ALM Media and Martindale-Hubbell™. He is a member of Million Dollar Advocates Forum, has been awarded the highest 10 rating by the lawyer evaluation website avvo.com, and is rated “AV,” the highest available rating from Martindale-Hubbell, a highly respected independent legal rating publisher. Awards and Honors Super Lawyers® Selectees David J. McMorris included in a Super Lawyers® list Other Sources of Feedback About David J. McMorris Included on the 2026Massachusetts Super Lawyers list Past Lists 2025 Massachusetts Super Lawyers list 2024 Massachusetts Super Lawyers list 2023 Massachusetts Super Lawyers list 2022 Massachusetts Super Lawyers list 2021 Massachusetts Super Lawyers list 2020 Massachusetts Super Lawyers list 2019 Massachusetts Super Lawyers list 2018 Massachusetts Super Lawyers list 2017 Massachusetts Super Lawyers list 2016 Massachusetts Super Lawyers list 2015 Massachusetts Super Lawyers list 2014 Massachusetts Super Lawyers list 2013 Massachusetts Super Lawyers list 2012 Massachusetts Super Lawyers list 2011 Massachusetts Super Lawyers list 2010 Massachusetts Super Lawyers list 2009 Massachusetts Super Lawyers list 2008 Massachusetts Super Lawyers list 2007 Massachusetts Super Lawyers list 2005 Massachusetts Super Lawyers list 2004 Massachusetts Super Lawyers list

• Partner

• Massachusetts, 1983
• New York, 1984
• U.S. Court of Appeals 1st Circuit, 1984
• U.S. District Court District of Massachusetts, 1984
• U.S. Federal Courts, 1983
• U.S. Supreme Court, 1988

• New York State Bar Association (Member)
• Massachusetts Bar Association (Member)
• Association of Trial Lawyers of America (Member)