The Roundup lawsuit continues to make headlines in 2025 as one of the most closely watched mass tort litigations in the United States. With the U.S. Supreme Court now reviewing key issues about whether federal law preempts state cancer failure-to-warn claims, the outcome could significantly impact thousands of current and future claimants.
If you or a loved one has been diagnosed with non-Hodgkin lymphoma after using Roundup weed killer, this update explains what’s happening in court, what the Supreme Court’s decision could mean, and how you can protect your rights.
Why the Roundup Lawsuit Is in the Supreme Court
Bayer, the maker of Roundup, is asking the Supreme Court to decide whether federal law—the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)—preempts state law claims that Roundup caused cancer due to inadequate warnings.
Lower courts have been split. Some appellate courts ruled in Bayer’s favor, saying that FIFRA bars state law claims. However, others disagreed, allowing claims to move forward. The Supreme Court granted certiorari in late 2024 and heard oral arguments on April 30, 2025.
A decision is expected by June 2025, and the ruling could determine whether thousands of cancer lawsuits can proceed in state courts or be dismissed.

What Claimants Need to Know
Here are the key updates for Roundup users and cancer patients:
- Supreme Court Decision Coming Soon: The Court’s decision could either strengthen or limit the ability to file Roundup cancer claims in state courts.
- Settlement Talks Continue: Even as the legal battle continues, Bayer has engaged in settlement discussions. However, no global settlement has been finalized.
- Individual Lawsuits Still Active: If you have a pending case, it may be affected by developments surrounding the Supreme Court’s ruling.
- New Diagnoses, New Claims: Individuals diagnosed with non-Hodgkin lymphoma after using Roundup may continue researching whether they have potential legal options.
- Evidence Matters: Medical records, proof of Roundup use, and expert testimony can be important when evaluating and building a case.
How the Supreme Court Decision Could Affect You
If the Supreme Court rules in favor of Bayer, it could make it more difficult for some Roundup claimants to move forward if particular state law claims are found to be blocked by FIFRA.
If the Court sides with claimants, it could preserve additional opportunities for individuals to pursue certain claims in state courts under applicable state laws.
Either way, developments involving federal preemption can significantly influence litigation strategies. Individuals considering a claim may want to understand both the federal regulatory framework and the laws that apply in their jurisdiction.
Compensation You May Be Entitled To
Depending on the circumstances and applicable law, damages sought in Roundup cancer lawsuits may include:
- Medical expenses, including past and future treatment costs
- Lost wages and reduced earning capacity
- Pain and suffering
- Emotional distress
- Loss of enjoyment of life
- Punitive damages when permitted by law and supported by the evidence
To learn more about potential compensation and how lawsuit values can vary, read our article on Roundup lawsuit settlement amounts and payouts.

What You Should Do Now
Changes in federal law and court decisions can influence the future of Roundup litigation. People researching a potential claim can take several practical steps to preserve useful information.
- Learn about the legal issues affecting Roundup cases.
- Preserve medical records and documentation showing Roundup use or exposure.
- Keep track of significant court decisions and regulatory developments.
You can also read our guide on who may qualify for a Roundup lawsuit to understand the factors commonly reviewed in potential claims.
Conclusion
The Roundup lawsuit remains an important area of product liability and mass tort litigation. Supreme Court decisions involving federal pesticide law and state claims can shape how current and future cases are handled.
For people following Roundup litigation, staying informed about court decisions, regulatory developments, scientific evidence, and filing requirements can make it easier to understand how the legal landscape is changing.