Contrary to popular belief, there is no set law about return policies in Massachusetts. Fill out the contact form or call us at 800.481.These questions and answers provide you with an introduction to Massachusetts product liability laws, but there is no substitute for proper legal advice. Fill out the contact form or call us at 800.262‎. 9200 to schedule your free consultation. We are experienced product liability attorneys. We are strong advocates who use science and the law to get compensation for our injured clients. How Do I Prove Liability in a Massachusetts Defective Product Case? Products that are bought and sold in Massachusetts must meet certain requirements. They must be fit for their intended and marketed uses.