Controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2026
Monsanto secures defense verdict in Roundup trial
Ruling
In a Roundup-related trial, a Missouri jury returned a unanimous defense verdict in favor of Monsanto, the company associated with Bayer. The case involved claims of design defect, fraud and negligence. The verdict resolved the trial in Monsanto's favor on those claims. The event was reported as Monsanto's first Roundup trial win since a Supreme Court ruling referenced in the source headline.
Source excerpt
German life sciences company Bayer AG (BAYN.DE) announced on Friday that its Monsanto unit secured a unanimous defense verdict in the first Roundup-related trial, since the U.S. Supreme Court's ruling in the Durnell case.
The company said a Missouri jury found in Monsanto's favor in the case of Theresa Aretino et al. versus Monsanto on claims alleging design defect, fraud and negligence.
2026
Jury rules for Bayer in Roundup cancer trial
Ruling
A Missouri jury unanimously ruled in favor of Bayer in a trial concerning claims that Roundup caused cancer in three women. The women alleged that they developed non-Hodgkin lymphoma after regularly using the weedkiller. The jury's decision resolved the trial in Bayer's favor.
A Missouri jury unanimously sided with Bayer in a trial over claims that Roundup caused cancer in three women. The women had alleged that they developed non-Hodgkin lymphoma after regularly using the weedkiller.
Company response
Denial — Bayer
"We are pleased with the jury's favorable verdict for Monsanto validating our belief that there is no evidence to prove design defect, fraud or negligence claims in the Roundup litigation,"
Source excerpt
The three women had said they were diagnosed with non-Hodgkin lymphoma after regularly using the weedkiller.
The German pharmaceutical giant Bayer won a trial on Thursday over claims the Roundup weedkiller, manufactured by subsidiary Monsanto, caused cancer in three women. The Missouri jury sided unanimously with Bayer.
2022
Bayer and Janssen sue Micro Labs over Xarelto patents
Lawsuit filed
Bayer Pharma AG, Bayer AG, and Janssen Pharmaceuticals Inc. filed a patent-infringement case against Micro Labs LTD and Micro Labs USA Inc. concerning Xarelto. The plaintiffs seek declaratory and injunctive relief and expenses.
Source excerpt
On Friday a case was filed in the District of Delaware by Bayer Pharma AG, Bayer AG, and Janssen Pharmaceuticals Inc. against Micro Labs LTD and Micro Labs USA Inc. The case is regarding violation of the patent rights for Xarelto.
Plaintiffs are suing for patent infringement and seek declaratory judgment of violation of the patent, injunctive relief preventing the defendants from selling their generic version prior to the expiration of the patent, and expenses.
2022
Lawsuit alleges defects in Bayer's Essure device
Lawsuit filed
A plaintiff sued Bayer and related entities, alleging that defects in the Essure birth control device and its manufacturing could harm users. The allegations are described in the complaint; the article does not report a court determination.
Source excerpt
The plaintiff is suing for false advertising, negligent misrepresentation, negligence, design failure, duty to warn, strict product liability, manufacturing defect, breach of implied warranty, constructive fraud, intentional misrepresentation, unfair and deceptive trade practices, and unjust enrichment.
The plaintiff raised several adverse effects of the product, and the procedure used to insert it. They alleged that flaws in the stainless steel used in the device, toxicity in the nitinol alloy, trace amounts of lead, and other manufacturing defects could all harm users.
2022
Los Angeles files PCB contamination lawsuit against Monsanto
Lawsuit filed
The city of Los Angeles sued Monsanto and two other companies seeking compensation for past and future costs related to PCB contamination of waterways. The city alleges that PCBs continue to enter local waterways and soils. Bayer said it was reviewing the lawsuit and believed it was without merit, and denied that Monsanto manufactured, used, or disposed of PCBs in Los Angeles waters.
Stated objective. The lawsuit seeks compensation for past costs incurred by the city in cleaning up PCB contamination and an abatement fund for future costs.
Company response
Denial — Bayer AG
“Monsanto voluntarily ceased its lawful manufacturing of PCBs more than 40 years ago, and never manufactured, used, or disposed of PCBs into Los Angeles’ waters, and therefore should not be held liable for the contamination alleged by the city,” the statement said.
Source excerpt
[PCBs] continue to drain into many waters here in Los Angeles," he said in a press conference today, listing out L.A. Harbor, Dominguez Channel, Machado Lake, Echo Park Lake, Marina Del Rey, Ballona Creek and Santa Monica Bay as places where PCBs continue to leach into the water system.
Monsanto has "never manufactured, used or disposed of PCBs into Los Angeles’ waters," and so shouldn't be held liable for the PCB that's been detected in local waters
The city of L.A. will be the latest to sue, City Attorney Mike Feuer announced today.
2021
Jury awards $62 million in PCB exposure case
Ruling
A King County jury awarded $62 million in damages to eight people harmed by exposure to PCBs at Sky Valley Education Center. The jury decided Bayer had done too little to warn the public about PCBs. Bayer Pharmaceuticals said it disagreed with the verdict and planned to appeal.
Company response
Denial — Bayer Pharmaceuticals
Bayer Pharmaceuticals said in a statement that it disagrees with the jury verdicts in both cases.
Source excerpt
A jury in King County Superior Court this week awarded $62 million in damages to eight people in King and Snohomish counties harmed by exposure to a toxic chemical at Sky Valley Education Center
Moments after the latest verdict was delivered on November 11, Bayer released a statement saying the PCB levels were very low at Sky Valley and blaming the school district by alleging it ignored warnings to remove outdated equipment containing PCBs.
The jury decided that Bayer, the German company that in 2018 bought Monsanto, the only maker of PCBs, did too little to warn the public about the PCBs.
2021
LHC Group files complaint against Bayer over Essure
Lawsuit filed
LHC Group filed a complaint against Bayer and others concerning the allegedly defective Essure birth-control device. The plaintiff alleged that Bayer negligently monitored and reported complications and continued marketing the product as safe and effective; these are allegations in the complaint, not a court determination.
Source excerpt
This failure to report, coupled with continued advertising and marketing which presented the product as safe and effective, caused the plaintiff further harm
The plaintiffs accused Bayer and its subsidiaries of negligence in the monitoring and reporting of complications regarding the insertion and retention of the device.
On Monday, a complaint was filed by LHC Group, Inc. against Bayer Corp. et al.
2020
Jury orders Bayer and BASF to pay damages over dicamba herbicide damage
Ruling
A U.S. jury found Bayer and BASF liable in a farmer's case alleging that dicamba herbicide produced by the companies drifted onto and severely damaged his peach orchard. The jury awarded $15 million in actual damages and $250 million in punitive damages. Bayer said it would appeal. The event was reported in February 2020.
Source excerpt
陪审团要求向农民Bill Bader赔偿1500万美元实际损失,以及惩罚赔偿2.5亿美元。
该农场主指控拜耳与巴斯夫生产的麦无畏除草剂(dicamba herbicide)伤害其果树。
德国化工巨擘拜耳(BAYRY.US)表示,就美国法院陪审团裁定拜耳和巴斯夫(BASFY.US)须向美国一农场主赔偿2.65亿美元的判决,拜耳将提出上诉。
2020
Bayer agrees to draft settlement terms in Roundup cases
Settlement
A report stated that Bayer agreed to draft settlement terms with law firms representing tens of thousands of people who allege that its Roundup weedkiller causes cancer. The source characterized the terms as a draft rather than a completed settlement. The report did not describe a finalized agreement or any resolution of the underlying allegations.
A report said Bayer agreed to draft settlement terms with law firms representing tens of thousands of people alleging its Roundup weedkiller causes cancer. The source described the terms as a draft, not a completed settlement.
Source excerpt
The Wall Street Journal reported that Bayer has agreed to draft settlement terms with law firms representing tens of thousands of people alleging its popular weedkiller Roundup causes cancer.
agreed to pay more than $10 billion to settle thousands of lawsuits claiming that its Roundup weed killer causes cancer.
Bayer did not admit any wrongdoing or liability as part of the settlement.
2020
D.C. sues Monsanto over PCB pollution allegations
Lawsuit filed
The District of Columbia filed a lawsuit against Monsanto and affiliated companies, alleging that they knowingly manufactured, promoted and sold toxic chemicals that polluted local waterways. Bayer, which acquired Monsanto, denied that Monsanto used or dumped PCBs into the District's waterways and stated that it would respond to the complaint.
The District of Columbia sued Monsanto and affiliated companies, alleging that they knowingly manufactured, promoted and sold toxic chemicals that polluted local waterways. Bayer, which acquired Monsanto, denied that Monsanto used or dumped PCBs into the District’s waterways and said it would respond to the complaint.
Company response
Denial — Bayer AG
In its response, Bayer AG, which acquired Monsanto, denied the company ever used or dumped PCBs into the District’s waterways
Clarification — Bayer AG
“We are reviewing this lawsuit and will respond to the complaint at the appropriate time,” Bayer AG said in a written statement.
Source excerpt
In its response, Bayer AG, which acquired Monsanto, denied the company ever used or dumped PCBs into the District’s waterways
The suit alleges the chemical giant made false claims to regulators over decades.
D.C. is suing Monsanto Co. and two affiliated companies, alleging they knowingly manufactured, promoted and sold toxic chemicals that polluted the Potomac River and its tributaries.
2020
Bayer announces settlements of Roundup, dicamba and PCB litigation
Settlement
Bayer announced agreements to settle Roundup cancer litigation, dicamba drift litigation and some PCB water litigation exposure in the United States. The article reports the settlement amounts and notes that some agreements remain subject to court approval.
Source excerpt
Bayer-Monsanto have announced that the company will make a total payment of $10.1 billion to $10.9 billion (€9.1 billion to €9.8 billion) to settle the non-Hodgkin’s Lymphoma Roundup litigation in the U.S..
Bayer also revealed Wednesday a series of agreements that resolve cases representing some of the company’s exposure to PCB water litigation.
One agreement establishes a class that includes all local governments with EPA permits involving water discharges impaired by PCBs.
2020
Bayer reaches settlements over Roundup, dicamba and PCB claims
Settlement
Bayer reached settlements resolving claims involving Roundup, dicamba-related crop damage and PCB pollution. The Roundup settlement addresses claims alleging the weed killer caused cancer; the source says the agreement includes no admission of liability. Bayer will pay farmers $400 million for dicamba crop-damage claims and roughly $650 million to resolve PCB waterway-pollution cases, with a separate $170 million agreement concerning PCB claims by three government plaintiffs.
Source excerpt
It also struck a separate deal with attorneys general in New Mexico, Washington state, and the District of Columbia to resolve PCB claims for $170 million.
Bayer will pay $400 million to farmers who claimed their crops were damaged from dicamba.
Bayer CEO Werner Baumann called the decision to settle the lawsuits the right one in order to end a long period of uncertainty.
2020
California appeals court upholds Monsanto liability and reduces award
Ruling
The California Court of Appeal in San Francisco upheld the liability verdict against Monsanto in Dewayne Johnson's Roundup case and reduced his award from $78.5 million to $20.5 million. Bayer said it continued to believe the verdict and awards were inconsistent with the trial evidence and law.
Company response
Denial — Bayer
In a statement Tuesday, Bayer said, "The appeal court's decision to reduce the compensatory and punitive damages is a step in the right direction, but we continue to believe that the jury's verdict and damage awards are inconsistent with the evidence at trial and the law.
Source excerpt
But the California Court of Appeal in San Francisco reduced the award to groundskeeper Dewayne Johnson, who suffers from non-Hodgkin's lymphoma, from $78.5 million to $20.5 million.
A former Vallejo groundskeeper with terminal cancer won an appeal Monday against Monsanto Co., which was seeking to overturn a trial court decision to award the man more than $75 million in damages.
In a statement Tuesday, Bayer said, "The appeal court's decision to reduce the compensatory and punitive damages is a step in the right direction, but we continue to believe that the jury's verdict and damage awards are inconsistent with the evidence at trial and the law.
2020
California appeals court upholds Roundup verdict and reduces damages
Ruling
A California appeals court rejected Bayer's bid to overturn a verdict for a school groundskeeper who claimed Roundup caused his cancer, while reducing the damages to US$20.5 million. The court said the plaintiff offered abundant evidence that glyphosate together with other ingredients in Roundup products caused his cancer.
A California appeals court rejected Bayer’s bid to overturn a verdict for a school groundskeeper who claimed Roundup caused his cancer, while reducing the damages to US$20.5 million. The court said the plaintiff offered abundant evidence that glyphosate together with other ingredients in Roundup products caused his cancer.
Company response
Clarification — Bayer
Bayer has long said regulators have deemed glyphosate safe. “We continue to stand strongly behind the safety and utility of Roundup,” the company said.
Source excerpt
Bayer has long said regulators have deemed glyphosate safe. “We continue to stand strongly behind the safety and utility of Roundup,” the company said.
The decision by the California Court of Appeal came after a San Francisco jury had in August 2018 awarded $289.2 million to the plaintiff Dewayne Johnson for his non-Hodgkin’s lymphoma, a sum later cut by the trial judge to $78.5 million (all figures US$).
In its 86-page decision, the appeals court said Johnson offered “abundant” evidence that glyphosate, together with other ingredients in Roundup products, caused his cancer.
2020
Bayer asks California Supreme Court to review Roundup verdict
Lawsuit filed
Bayer asked the California Supreme Court to review a decision affirming a $20.5 million award to groundskeeper Dewayne Johnson, who claimed Roundup caused his cancer. Bayer argued the ruling conflicted with federal law and settled legal principles; the request was an appeal, not a new court determination.
Source excerpt
The Court of Appeal later reduced the damages to $20.5 million.
Bayer AG has asked California’s Supreme Court to review a decision awarding $20.5 million to a groundskeeper who claimed the company’s Roundup weedkiller caused his cancer, arguing the ruling was at odds with federal law and settled legal principles.
2019
Australian farmer sues Monsanto over Roundup
Lawsuit filed
In 2019, Ross Wild, a farmer from New South Wales, Australia, filed a lawsuit against Monsanto, alleging that long-term exposure to Roundup caused his non-Hodgkin's lymphoma and that the product's warnings were inadequate. Bayer Australia, the parent company of Monsanto, responded that the scientific evidence supported the conclusion that Roundup did not cause the disease. The case was reported by ABC News on 10 October 2019.
NSW farmer Ross Wild filed a lawsuit against Monsanto, alleging that long-term exposure to Roundup caused his non-Hodgkin's lymphoma and that product warnings were inadequate. Bayer Australia said the scientific evidence supported the conclusion that Roundup did not cause the disease.
Company response
Denial — Bayer Australia
In a statement, Bayer Australia said it had great sympathy for any individual with cancer, but the "extensive body of science" on glyphosate-based herbicides supported the conclusion that Roundup did not cause non-Hodgkin's lymphoma.
Source excerpt
Mr Wild's case was lodged with the Victorian Supreme Court earlier this week.
In a statement, Bayer Australia said it had great sympathy for any individual with cancer, but the "extensive body of science" on glyphosate-based herbicides supported the conclusion that Roundup did not cause non-Hodgkin's lymphoma.
Mr Carbone said the warnings on Roundup bottles were inadequate and his client's clothes and body had been "drenched" in the herbicide over a 40-year period of use.
2019
Bayer appeals Roundup cancer verdict
Lawsuit filed
Bayer said it had asked a US federal appeals court to reverse the $25 million judgment in Edwin Hardeman's case, which concerned his claim that Roundup caused his cancer.
Stated objective. Reverse the $25 million judgment.
Source excerpt
German chemical giant Bayer said on Monday it had asked a US federal appeals court to reverse a $25 million (€22.4 million) judgment ordering it to pay a California man who blamed the weedkiller Roundup for his cancer.
Bayer AG has asked California’s Supreme Court to review a decision awarding $20.5 million to a groundskeeper who claimed the company’s Roundup weedkiller caused his cancer, arguing the ruling was at odds with federal law and settled legal principles.
2019
Bayer fined over Supradyn Kids advertising
Fine or penalty
Hungary's acting Competition Council fined Bayer €20,000 and ordered it to terminate communications for Supradyn Kids supplement products. The Council found that a television ad promoting Supradyn Kids multivitamins involved unfair commercial practices against consumers.
Source excerpt
“The acting Competition Council finds that Bayer Hungária Kft has conducted unfair commercial practices against consumers in a television ad promoting the Supradyn Kids multivitamin published between November 14, 2016 and February 26, 2017,” the order stated.
In fining the firm €20,000 (HUF 7m) the acting Competition Council ordered Bayer to “terminate all means of communication of the Supradyn Kids multivitamin omega 3 and choline dietary supplement products”.
2018
Roundup litigation
After acquiring Monsanto, Bayer became the defendant in extensive litigation over whether glyphosate-based Roundup products cause non-Hodgkin lymphoma and other cancers. Bayer contests the claims while pursuing settlements and appeals.
2013
Bayer sues Glenmark over generic Finacea
Lawsuit filed
Bayer, alongside its subsidiaries Intendis and Intraserv, sued Glenmark after Glenmark filed a US application for a generic version of Finacea. Bayer alleges that Glenmark’s product infringes Finacea’s patent and seeks an order preventing commercialization before patent expiry.
Source excerpt
However, Bayer – alongside its subsidiaries Intendis and Intraserv – claims Glenmark’s product infringes on Finacea’s patent, and it wants a legal order preventing Glenmark from commercialising generic azeliac acid gel until this time.
Bayer has launched a lawsuit against Glenmark Generics after the India-based firm filed for US approval of a generic version of skin disorder treatment Finacea.