massachusetts v. purdue is a lawsuit filed on august 14, 2018 suing the stamford, connecticut-based company purdue pharma lp, which created and manufactures oxycontin, "one of the most widely used and prescribed opioid drugs on the market", and purdue's owners, the sacklers accusing them of "widespread fraud and deception in the marketing of opioids, and contributing to the opioid crisis, the nationwide epidemic that has killed thousands." purdue denied the allegations.