Thornton Law Firm
Massachusetts-based plaintiff-side law firm focused on mesothelioma, asbestos, toxic tort, and personal injury litigation.
Last updated September 15, 2026
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Overview
Thornton Law Firm is a Massachusetts complex litigation and personal injury law firm founded in 1978 by Michael Thornton, doing groundbreaking work for victims of mesothelioma and other asbestos-related diseases. It describes itself as a leading injury law firm in Massachusetts and one of the largest plaintiff-side law firms in New England, with 17 attorneys representing thousands of clients. Its practice areas include mesothelioma and asbestos litigation, PFAS chemical exposure lawsuits, birth defect litigation, and whistleblower representation.
History
Thornton Law Firm was founded in 1978 by Michael Thornton doing groundbreaking work for victims of mesothelioma and other asbestos-related diseases. Over four decades of complex litigation experience, the firm has been involved in cases of local and national importance. Its work on behalf of the injured has included representing the Commonwealth of Massachusetts in its lawsuit against the tobacco industry, which settled for $8 billion in 1998, and more than 20,000 victims of mesothelioma and other asbestos-related diseases, including serving as plaintiffs' asbestos liaison counsel in Massachusetts. The firm has also represented children suffering from severe birth defects related to the use of chemicals in the workplace, and victims of catastrophic injuries. It is now described as a leading injury law firm in Massachusetts and one of the largest plaintiff-side law firms in New England, with 17 attorneys representing thousands of clients.
Products and positioning
People Focused. Results Driven. A nationwide leader in cutting-edge toxic tort litigation and a recognized leader in personal injury litigation.
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