Skip to content

Monsanto

Controversies

Controversies tied to this brand in public sources. A listing is not a finding of fault.

Back to profile21 entries · Page 1 of 2

  1. 2026

    Monsanto secures defense verdict in Roundup trial

    Ruling

    A Missouri jury returned a unanimous defense verdict in favor of Monsanto in a Roundup-related trial. The case involved claims of design defect, fraud and negligence. The verdict was reported as Monsanto's first Roundup trial win since the Supreme Court's Durnell ruling. The jury found for the defense on the claims presented.

    Company response

    • Denial — Bayer

      Bayer has denied ​the claims

    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.
    • Plaintiffs Theresa Aretino, Cynthia Fernandez and Betty Larkin sued Bayer unit Monsanto in 2020 in St. Louis, saying they used Roundup regularly and later developed non-Hodgkin lymphoma.
  2. 2026

    Missouri jury returns verdict for Monsanto in Roundup trial

    Ruling

    A Missouri circuit court jury returned a unanimous verdict for Monsanto in a case brought by three plaintiffs involving Roundup. The jury found for Monsanto on the design-defect, fraud and negligence claims pursued at trial.

    Source excerpt

    • A Missouri circuit court jury reached a unanimous verdict in favor of Monsanto Oct. 29 in the three-plaintiff case of Theresa Aretino, et al. v. Monsanto Company, the first Roundup trial since the U.S. Supreme Court’s ruling in Monsanto v. Durnell.
    • The jury found for Monsanto on the design defect, fraud and negligence claims that each of the three plaintiffs pursued at trial following the Supreme Court’s decision in Durnell, which preempted their failure-to-warn claims.
    • The trial began Sept. 30 and involved three women from Florida who alleged that exposure to Roundup caused their illnesses.
  3. 2022

    Los Angeles files lawsuit over alleged PCB contamination

    Lawsuit filed

    Los Angeles filed a lawsuit against Monsanto Company, Solutia Inc. and Pharmacia LLC, alleging that Monsanto polluted city waterways with PCBs and seeking repayment of cleanup-related costs and abatement of the alleged public nuisance. These are allegations in the lawsuit.

    Stated objective. Repay the city's cost to address PCB contamination and abate the alleged public nuisance until PCBs stop posing a threat to public health and the environment.

    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

    • The city's lawsuit is seeking repayment of the city's cost to address PCB contamination and to require Monsanto to abate the public nuisance until the PCBs stop posing a threat to public health and the environment.
    • The lawsuit alleges that Monsanto polluted the city's waterways with polychlorinated biphenyls (PCBs)
    • The lawsuit was filed Friday against three companies that Monsanto spun off into acquisitions and consolidations in the 1990s -- Monsanto Company, now owned by Bayer; Solutia Inc., now owned by Eastman Chemical Company; and Pharmacia LLC., now owned by Pfizer.
  4. 2021

    Delaware sues Monsanto over PCB contamination

    Lawsuit filed

    In 2021, Delaware Attorney General Kathy Jennings filed a lawsuit against Monsanto and two corporate spinoffs, seeking damages and cleanup costs for alleged long-lasting damage to Delaware's natural resources from PCBs. The lawsuit alleges that Monsanto knew of the chemicals' dangers and continued to manufacture and sell them.

    Source excerpt

    • The lawsuit seeks to recover damages and clean-up costs associated with polychlorinated biphenyls (PCBs), extremely toxic and persistent chemicals which Monsanto manufactured for decades, despite knowing the dangers they posed to the environment and public health.
    • The lawsuit alleges that Monsanto polluted the city's waterways with polychlorinated biphenyls (PCBs)
  5. 2021

    Maryland sues Monsanto over alleged harm to natural resources

    Lawsuit filed

    Maryland's attorney general filed a lawsuit against Monsanto and two spinoffs, alleging that chemicals Monsanto manufactured harmed the state's waters, fish and wildlife and seeking damages and clean-up costs. Bayer, Monsanto's parent company, said the lawsuit was without merit and denied that Monsanto manufactured, used or disposed of PCBs in Maryland.

    Maryland’s attorney general filed a lawsuit against Monsanto and two spinoffs, alleging that chemicals Monsanto manufactured harmed the state’s waters, fish and wildlife and seeking damages and clean-up costs. Bayer, Monsanto’s parent company, said the lawsuit was without merit and denied that Monsanto manufactured, used or disposed of PCBs in Maryland.

    Company response

    • Denial — Bayer

      Bayer, Monsanto's parent company, said in a statement that the lawsuit is without merit.

    Source excerpt

    • Bayer, Monsanto's parent company, said in a statement that the lawsuit is without merit.
    • Maryland’s attorney general filed a lawsuit Tuesday against chemical company Monsanto and two spinoffs, alleging that chemicals Monsanto manufactured harmed the state’s waters, fish and wildlife and seeking to recover damages and clean-up costs.
    • “Monsanto not only continued to manufacture and sell PCBs but increased production even when the harm to the environment was undeniable,” Frosh said in a statement.
  6. 2021

    French data protection agency fines Monsanto over watch lists

    Fine or penalty

    France's personal data protection agency, CNIL, fined Monsanto 400,000 euros over files compiled on public figures, journalists and activists. CNIL said Monsanto failed to inform people on the lists and deprived them of the right to refuse being listed.

    Source excerpt

    • The CNIL agency fined Monsanto 400,000 euros ($473,000) in the case brought by seven plaintiffs.
    • By keeping the lists secret, Monsanto deprived them of this right, CNIL said.
  7. 2021

    Proposed Roundup false-labeling class-action settlement

    Settlement

    Plaintiffs in a class-action lawsuit against Monsanto asked the court for preliminary approval of a proposed $45 million settlement concerning allegations that Monsanto failed to warn Roundup users about claims linking the product to cancer. The settlement remained subject to approval; Monsanto denied the allegations and liability.

    Company response

    • Denial — Monsanto

      Reportedly, Monsanto denies the allegations in the plaintiffs’ complaint and further denies any liability.

    Source excerpt

    • The plaintiffs lawsuit alleged that Monsanto committed fraud by not alerting consumers on the product that it is linked to cancer.
    • Reportedly, Monsanto denies the allegations in the plaintiffs’ complaint and further denies any liability.
    • A group of Roundup users asked the Delaware District Court to give preliminary approval to a $45 million settlement and certify a nationwide class of consumers in a lawsuit against Monsanto Co., the company which produces Roundup.
  8. 2021

    Monsanto responds to allegations over settlement agreement

    Company response

    Monsanto asked the Eleventh Circuit to allow it to file its settlement agreement with John Carson under seal and argued that allegations about the agreement were incomplete, misleading, and in some respects inaccurate.

    Source excerpt

    • The defendant, however, said that the letter brief filed last week “includes hearsay descriptions of the settlement agreement that are incomplete, misleading, and in some respects inaccurate.”
    • Monsanto, however, argued that the appellate court should disregard the letter, saying the third-party plaintiffs and attorneys did not have grounds to appeal the settlement deal with John Carson.
    • These plaintiffs alleged that Bayer paid Carson to appeal the lawsuit because the Southern District of Georgia decided to dismiss some of the plaintiffs’ claims and Bayer wants that decision to apply to some of the other lawsuits against it, where it could save them even more money.
  9. 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 said 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.
  10. 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.
  11. 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.
  12. 2020

    California appeals court upholds Monsanto liability in Roundup cancer case

    Ruling

    A California appeals court denied Monsanto a new trial and affirmed its liability to Dewayne Johnson, while reducing the damages and conditioning the denial of a new trial on Johnson accepting the reduced amounts. The judges said Johnson presented substantial evidence that Roundup products caused his cancer.

    Source excerpt

    • In our view, Johnson presented abundant -- and certainly substantial -- evidence that glyphosate, together with the other ingredients in Roundup products, caused his cancer,
    • Bayer said in a statement that the ruling is a "step in the right direction."
    • Under Monday's ruling, the court denied Monsanto's motion for a new trial on condition that Johnson accept a settlement of $10.2 million in compensatory damages and the same amount in punitive damages.
  13. 2019

    Australian farmer sues Monsanto over Roundup

    Lawsuit filed

    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.
  14. 2019

    Monsanto fined $10.2 million over pesticide spraying in Hawaii

    Fine or penalty

    Modern Farmer reported that Monsanto was fined $10.2 million for spraying an illegal pesticide in Hawaii. The supplied article does not identify the authority imposing the fine or provide further details.

    Source excerpt

    • Monsanto Fined $10.2 Million For Spraying Illegal Pesticide in Hawaii
  15. 2019

    Monsanto agrees to plea deal and more than $10 million in fines

    Fine or penalty

    Monsanto agreed to plead guilty to unlawfully using a banned pesticide on research crops in Maui and to pay more than $10 million in fines and community-service payments. The U.S. Justice Department released the plea agreement on Thursday.

    Source excerpt

    • “The illegal conduct in this case posed a threat to the environment, surrounding communities and Monsanto workers,” said United States Attorney Nick Hanna.
    • Monsanto has agreed to plead guilty to using a banned pesticide on Maui research crops and pay more than $10 million in fines, according to a U.S. Justice Department plea agreement released Thursday.
  16. 2019

    Brazilian court rules in Monsanto seed-royalty dispute

    Ruling

    Brazil's appeals court ruled against Brazilian farmers' unions, holding that farmers cannot save seeds for replanting when the seeds are harvested from Monsanto's patented Roundup Ready soybeans. Monsanto said the decision would strengthen agricultural innovation in Brazil.

    Source excerpt

    • In a public statement, Monsanto – which was acquired by Bayer in 2018 – said the decision will strengthen “agricultural innovation in Brazil.”
    • The court’s nine justices unanimously ruled on Oct. 9 that farmers cannot save seeds for replanting if the seeds are harvested from Monsanto’s patented Roundup Ready soybeans
    • The Brazilian appeals court’s Oct. 9 decision reverses a past ruling establishing the rights of small farmers in Brazil.
  17. 2018

    Roundup cancer litigation

    Lawsuits alleged that exposure to Roundup caused non-Hodgkin lymphoma and that Monsanto failed to provide adequate warnings. Jury verdicts and continuing settlements created substantial legal and reputational challenges for Bayer after the acquisition.

  18. 2018

    Dicamba litigation and crop-damage disputes

    Monsanto’s dicamba-related products became associated with disputes over alleged off-target drift, crop damage, and regulatory approval. The controversy continued after Bayer acquired the company.

  19. 1977

    PCB contamination and liability

    Monsanto stopped producing PCBs in 1977, but contamination associated with earlier production and the later corporate separation of Solutia generated decades of environmental claims and litigation.

  20. 1970

    DDT environmental controversy

    Monsanto manufactured DDT before the insecticide was prohibited in the United States in 1972 because of environmental and ecological concerns.