| 2026-04-28 | United States | Judgment against company | Opioid Manufacturer Purdue Pharma Sentenced for Fraud and Kickback Conspiracies U.S. Department of Justice + 2 more reports | $5 billion |
| 2024-12-13 | United States | Settlement | Justice Department Announces Resolution of Criminal and Civil Investigations into McKinsey & Company’s Work with Purdue Pharma L.P.; Former McKinsey Senior Partner Charged with Obstruction of Justice U.S. Department of Justice | — |
| 2024-06-27 | United States | Judgment for company / dismissed | Harrington v. Purdue Pharma L.P. Supreme Court of the United States | — |
| 2024-06-27 | United States | Other | Harrington v. Purdue Pharma L.P. Supreme Court of the United States | — |
| 2024-06-27 | United States | Other | Harrington v. Purdue Pharma L.P. Revisions: 6/27/24 Supreme Court of the United States + 1 more reports | — |
| 2023-05-30 | United States | Other | In Re: Purdue Pharma L.P. Court of Appeals for the Second Circuit | — |
| 2023 | United States | Settlement | In May 2023, the U.S. Second Circuit Court of Appeals in New York endorsed the $6 billion settlement, with the Sackler family giving up ownership of Purdue and all profits being sent to a fund to prev Wikipedia: Purdue Pharma（2022–2023 bankruptcy settlement） | — |
| 2023 | United States | Judgment against company | However, on August 10, 2023, the Supreme Court of the United States paused the bankruptcy settlement and agreed to hear an appeal made by the United States Department of Justice as to the legality of Wikipedia: Purdue Pharma（2022–2023 bankruptcy settlement） | — |
| 2022-07-18 | United States | Settlement | California Pain Specialist Agrees to Settle Alleged Receipt of Kickbacks from Pharmaceutical Companies Purdue Pharma and Depomed U.S. Department of Justice | — |
| 2022 | United States | Settlement | In March 2022, U.S. bankruptcy judge Robert Drain approved a settlement involving eight states plus the District of Columbia. Under the terms of the settlement agreement, the Sacklers would be require Wikipedia: Purdue Pharma（2022–2023 bankruptcy settlement） | — |
| 2021-12-16 | United States | Judgment against company | Statement from Attorney General Merrick B. Garland Regarding Purdue Pharma Bankruptcy U.S. Department of Justice | — |
| 2021-06-10 | United States | Other | State of Arkansas Ex Rel. Leslie Rutledge, Attorney General v. Purdue Pharma L.P. Supreme Court of Arkansas | — |
| 2021-04-29 | United States | Settlement | Law Firms Representing Purdue Pharma Agree to Relinquish $1 Million in Settlement with U.S. Trustee Program U.S. Department of Justice | — |
| 2020-11-24 | United States | Guilty plea / conviction | Purdue Pharma L.P. Pleads Guilty To Federal Felonies Relating To The Sale And Marketing Of Prescription Opioids U.S. Department of Justice + 2 more reports | — |
| 2020 | United States | Settlement | In October 2020, Purdue agreed to an $8 billion settlement that includes a $2 billion criminal forfeiture, a $3.54 billion criminal fine, and $2.8 billion in damages for its civil liability. It would Wikipedia: Purdue Pharma（2019 and 2020 lawsuits and negotiations） + 6 more reports | $8 billion / $2 billion / $3.54 billion |
| 2019-02-04 | United States | Filed / under investigation | State of Delaware, ex rel. Jennings v. Purdue Pharma L.P. Superior Court of Delaware | — |
| 2019 | United States | Filed / under investigation | By 2019, over 1,000 lawsuits have been initiated against Purdue by state and local governments. States across the USA have filed claims for more than $2 trillion in the Purdue Pharma bankruptcy case. Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） | — |
| 2019 | United States | Filed / under investigation | In 2019, Massachusetts attorney general Maura Healey filed a lawsuit against Purdue Pharma which also claimed eight members of the Sackler family were "personally responsible" for deceptive sales prac Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） | — |
| 2019 | United States | Settlement | In March 2019, Purdue Pharma reached a $270 million settlement in a lawsuit filed by Oklahoma, which claimed its opioids contributed to the deaths of thousands of people. Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） | $270 million |
| 2019 | United States | Settlement | In August 2019, Purdue Pharma and the Sackler family were in negotiations to settle the claims for a payment of $10-$12 billion. The settlement would include a Chapter 11 filing by Purdue Pharma, whic Wikipedia: Purdue Pharma（2019 and 2020 lawsuits and negotiations） | — |
| 2019 | United States | Filed / under investigation | However, many states refused the terms of the proposed settlement and vowed to pursue further litigation to recover additional money, much of it alleged to be hidden offshore. States are seeking to ho Wikipedia: Purdue Pharma（2019 and 2020 lawsuits and negotiations） | — |
| 2018-06-12 | United States | Filed / under investigation | New Mexico ex rel. Balderas v. Purdue Pharma L.P. District Court, D. New Mexico | — |
| 2018 | United States | Filed / under investigation | In May 2018, six states—Florida, Nevada, North Carolina, North Dakota, Tennessee, and Texas—filed lawsuits charging deceptive marketing practices, adding to 16 previously filed lawsuits by other U.S. Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） + 1 more reports | — |
| 2017 | United States | Filed / under investigation | In January 2017, the city of Everett, Washington sued Purdue based on increased costs for the city from the use of OxyContin as well as Purdue not intervening when they noted odd patterns of sale of t Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） | — |
| 2016-09-29 | United States | Judgment for company / dismissed | City of Chicago v. Purdue Pharma L.P. District Court, N.D. Illinois | — |
| 2016-01-29 | United States | Judgment for company / dismissed | United States ex rel. Steven May v. Purdue Pharma L.P. Court of Appeals for the Fourth Circuit | — |
| 2013-12-12 | United States | Other | United States Ex Rel. May v. Purdue Pharma L.P. Court of Appeals for the Fourth Circuit | — |
| 2013-08-05 | United States | Other | United States v. Purdue Frederick Co. District Court, W.D. Virginia | — |
| 2013-01-09 | United States | Filed / under investigation | Purdue Pharma L.P. v. Commonwealth of Kentucky Court of Appeals for the Second Circuit | — |
| 2011-09-26 | United States | Filed / under investigation | Kentucky ex rel. Conway v. Purdue Pharma, L.P. District Court, S.D. New York | — |
| 2010-03-24 | United States | Filed / under investigation | United States v. Purdue Pharma L.P. Court of Appeals for the Fourth Circuit | — |
| 2010-03-24 | United States | Other | US ex rel. Radcliffe v. Purdue Pharma L.P. Court of Appeals for the Fourth Circuit | — |
| 2008-10-14 | United States | Filed / under investigation | United States Ex Rel. Radcliffe v. Purdue Pharma L.P. District Court, W.D. Virginia | — |
| 2007-07-23 | United States | Filed / under investigation | United States v. Purdue Frederick Co., Inc. District Court, W.D. Virginia | — |
| 2007 | United States | Settlement | 2007 | Purdue Pharma | $601 million | Off-label promotion | Oxycontin | False Claims Act Wikipedia: List of largest pharmaceutical settlements | $601 million |
| 2007 | United States | Guilty plea / conviction | In May 2007, the company pleaded guilty to misleading the public about OxyContin's risk of addiction and agreed to pay $600 million (equivalent to approximately $932M in 2025) in one of the largest ph Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） | $600 million |
| 2007 | United States | Settlement | On October 4, 2007, Kentucky officials sued Purdue because of widespread OxyContin abuse in Appalachia. A lawsuit filed by Kentucky then-Attorney General Greg Stumbo and Pike County officials demanded Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） | $24 million |
| 2004-08-18 | United States | Filed / under investigation | McCauley v. Purdue Pharma L.P. District Court, W.D. Virginia | — |
| 2004 | United States | Settlement | In 2004, the West Virginia Attorney General sued Purdue for reimbursement of "excessive prescription costs" paid by the state. Saying that patients were taking more of the drug than they had been pres Wikipedia: Purdue Pharma（Oxycontin-related lawsuits） | US$10 million |
| 2002-09-20 | United States | Filed / under investigation | Little v. Purdue Pharma, L.P. District Court, S.D. Ohio | — |
| 2001-11-15 | United States | Filed / under investigation | McCaulley v. Purdue Pharma, L.P. District Court, W.D. Virginia | — |
| 2001-09-27 | United States | Filed / under investigation | McCallister v. Purdue Pharma L.P. District Court, S.D. West Virginia | — |