| 2026-05-20 | United States | Settlement | Antitrust Division Secures Seed Tying and Loyalty Program Commitments from Bayer U.S. Department of Justice | — |
| 2026 | United States | Judgment for company / dismissed | In June 2026, Bayer secured an important victory before the US Supreme Court , which ruled that Bayer could not be sued under state law, thereby depriving thousands of Roundup-related lawsuits of thei Wikipedia: Bayer（Litigation） | — |
| 2026 | United States | Filed / under investigation | In January 2026, Bayer's Monsanto filed patent infringement lawsuits against Pfizer , BioNTech and Moderna over technology used in the manufacture of their COVID-19 vaccines . The lawsuits, filed in f Wikipedia: Bayer（COVID-19 vaccine patent litigation） | — |
| 2023 | United States | Judgment for company / dismissed | On 4 April 2023, a Delaware judge dismissed a lawsuit by Merck & Co 's seeking to hold Bayer responsible for more talc -related liabilities, stemming from its $14.2 billion purchase of Merck's consume Wikipedia: Bayer（Litigation） | — |
| 2022-09-02 | United States | Settlement | Bayer to Pay $40 Million to Resolve the Alleged Use of Kickbacks and False Statements Relating to Three Drugs U.S. Department of Justice + 2 more reports | $40 Million |
| 2020 | United States | Settlement | In June 2020, the company agreed to pay $9.6 billion to settle more than 10,000 lawsuits claiming harm from Roundup, saying this action will result in the resolution of 75% of those claims. Bayer will Wikipedia: Bayer（Litigation） | $9.6 billion |
| 2020 | United States | Judgment against company | On 14 February 2020, Bayer and BASF were ordered to pay Missouri peach farmer Bill Bader $15 million in damages as a result of destruction of his peach trees which was caused by the usage of dicamba b Wikipedia: Bayer（Litigation） | $15 million / $250 million |
| 2020 | United States | Settlement | In June 2020, Bayer agreed to a settlement of up to $400 million for all 2015 to 2020 crop year dicamba claims, not including the $265 million judgement. On 25 November 2020, U.S. District Judge Steph Wikipedia: Bayer（Litigation） | $400 million |
| 2020 | United States | Settlement | In June 2020, Bayer agreed to pay $800 million to settle lawsuits in a variety of jurisdictions which claimed contamination of public waterways with PCBs by Monsanto before 1978. On 25 November 2020, Wikipedia: Bayer（Litigation） | $800 million |
| 2019 | United States | Settlement | In 2019, Bayer and Johnson & Johnson (who market Xarelto together) settled around 25,000 lawsuits on the blood thinning drug Xarelto (rivaroxaban) by agreeing to disburse $775 million (US) to federal Wikipedia: Bayer（Litigation） | $775 million |
| 2019 | United States | Judgment for company / dismissed | In 2019, a federal jury in San Francisco sided with Bayer in a $600 million (US) class action suit alleging that the company misinformed consumers by promoting its One A Day vitamins as supporting car Wikipedia: Bayer（Litigation） | — |
| 2018-05-29 | United States | Settlement | Justice Department Secures Largest Negotiated Merger Divestiture Ever to Preserve Competition Threatened by Bayer’s Acquisition of Monsanto U.S. Department of Justice | — |
| 2018 | United States | Judgment against company | In August 2018, two months after Bayer acquired Monsanto, a U.S. jury ordered Monsanto to pay $ 289 million to a school groundskeeper who claimed his non-Hodgkin's lymphoma was caused by regularly usi Wikipedia: Bayer（Litigation） | — |
| 2015-09-21 | United States | Settlement | Bayer CropScience to Enhance Safeguards at Chemical Facilities in Four States to Settle Violations at a West Virginia Plant U.S. Department of Justice | $5.6 million / $975,000 |
| 2014-09-12 | United States | Filed / under investigation | United States Seeks Civil Contempt Against Bayer Corporation for Failure to Substantiate Promotional Claims for Phillips’ Colon Health U.S. Department of Justice + 1 more reports | — |