This past month, the Supreme Court handed down one of the most consequential product liability decisions in decades, and most people have no idea it happened.
Monsanto Co. v. Durnell. 7 to 2. Federal preemption wins. Tens of thousands of cancer victims lose their day in court.
The Man Behind the Case
John Durnell is a Missouri gardener who spent years using Roundup, the world’s most popular weed killer. He developed non-Hodgkin lymphoma. A jury heard the evidence, believed him, and awarded him more than a million dollars. The Missouri Court of Appeals agreed. The case was straightforward: Monsanto knew about the cancer risks, said nothing, and people got sick. Monsanto, now owned by German pharmaceutical giant Bayer, took it to the Supreme Court anyway.
Monsanto’s Argument, and Why the Court Bought It
Monsanto’s argument was that federal law made them do it. The Federal Insecticide, Fungicide, and Rodenticide Act, known as FIFRA, gives the EPA authority over pesticide labels. The EPA has not required a cancer warning on Roundup. Therefore, Monsanto argued, no state jury can second-guess that determination, and no state failure-to-warn claim can stand. Writing for the majority, Justice Kavanaugh agreed. John Durnell’s million-dollar verdict is gone.
In plain terms: Federal preemption means a federal law can override a state law that conflicts with it. Here, the Court found that once the EPA approves a pesticide label, state juries cannot require a company to add warnings the EPA did not require, even in a lawsuit over someone’s cancer diagnosis.
The Dissent Gets It Right
The dissent by Justice Jackson, joined by Justice Gorsuch, gets it exactly right. Durnell’s claim was not asking Monsanto to do something different from what federal law requires. It was asking Monsanto to do what federal law already demands: do not misbrand your product, and do not sell people something dangerous while hiding the danger. The misbranding prohibition in FIFRA exists precisely to ensure adequate warnings. A state tort claim enforcing that same duty is not a conflict with federal law. It runs parallel to it.
The majority turned that logic on its head. By holding that EPA approval of a label creates a ceiling rather than a floor, the Court converted regulatory compliance into corporate immunity.
That is not how it is supposed to work.
The People Left Without a Remedy
An estimated 100,000 lawsuits have been filed against Bayer and Monsanto claiming Roundup caused cancer, with roughly 65,000 still unresolved at the time of this ruling. Many are farmworkers. Many are people who spent years in their backyards. None were warned. The International Agency for Research on Cancer, a World Health Organization body, classified glyphosate, Roundup’s key ingredient, as probably carcinogenic to humans back in 2015. That is not plaintiff lawyers manufacturing science.
State courts were the only place these people could go, because FIFRA does not create a private right of action. There is no separate federal remedy for someone injured by a toxic pesticide. The courthouse door is now effectively closed on failure-to-warn claims.
In plain terms: A failure-to-warn claim argues that a company knew about a danger in its product and did not tell consumers. Yesterday’s ruling means that if a federal agency has approved a product’s label, that approval can block this type of claim in state court, even when new science raises questions the agency has not addressed.
Bayer’s Stock Surged as Much as 24%
Read that again. Multiple outlets reported the jump landed in the 17 to 24 percent range that day, with one report calling it Bayer’s largest intraday gain since 2003.
The Path Forward Is Narrow
Bayer has a proposed nationwide class settlement structured as declining annual payments over up to 21 years, totaling as much as $7.25 billion. That deal was already being negotiated from a position of strength. After yesterday, Bayer has even more leverage to push terms that shortchange injured people.
Congress could still act. The House recently stripped a pesticide immunity provision from the Farm Bill, which suggests some appetite for a legislative response. But this same administration backed Monsanto before the Court while simultaneously signing an executive order to boost domestic glyphosate production. The politics are contradictory. The injured people are caught in the middle.
Why This Ruling Reaches Far Beyond Roundup
This decision is not just about one weed killer. The preemption framework the Court reinforced here will migrate. Any time a federal agency has approved a product label, manufacturers now have a roadmap to argue that state tort claims are preempted. That argument will show up in pesticide cases, chemical exposure cases, and anywhere regulatory approval can be reframed as a federal ceiling on liability rather than a floor. The accountability gap between what corporations know and what they are legally required to tell you just got wider.
John Durnell got cancer. He proved his case to a jury. He won. Yesterday, the Supreme Court took it away. That should bother everyone, regardless of where you sit politically.
If You or a Loved One Has Been Affected
Rulings like this one change the legal landscape, but they do not erase what happened to the people who were hurt. Our Personal Injury team continues to track how decisions like Durnell affect existing and future claims, including what options may still be available to people harmed by products they were never properly warned about. If you have questions about your rights, we are here to help.
Have questions about your rights after this ruling? Call HH Law Firm at 833-359-6116 or visit hhlawfirm.law to speak with our team.
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