The Supreme Court Ruled Against Roundup Warning Claims — Your Case Is Not Over
You are a farmer. You have sprayed Roundup across your corn and soybean acres for years — maybe decades. You know the smell of it, the way the mist drifted on the days the wind turned, the feel of the sprayer handle in your hand through a full planting season. And now you have cancer. Non-Hodgkin lymphoma, maybe — the diagnosis that turned a routine doctor’s visit into a word you were not prepared to hear.
You turned on the news on June 25, 2026, and the headline said the Supreme Court ruled for Bayer. Seven justices to two. Roundup users can no longer sue over missing cancer warnings. Your first thought was simple and cold: that is it. My case is over.
It is not. And that is the single most important thing you need to hear right now.
What the Supreme Court closed was one road — the failure-to-warn road, the argument that Bayer should have put a cancer warning on the label beyond what the EPA approved. What remains open are other roads: that the product itself was defectively designed, that Monsanto knew of the cancer risk and buried the evidence, that the company failed to investigate the health concerns its own research was signaling. Those roads are harder. They require more expert testimony, deeper discovery, and a more sophisticated legal theory. But they are live, and they are where the next Roundup verdicts will come from.
We are Attorney911 — The Manginello Law Firm, PLLC. We handle toxic tort and product liability cases for people whose exposures turned into diagnoses. This page is for the farmer in Cedar Rapids, in Linn County, in any of the Iowa counties where glyphosate has been sprayed across millions of acres for decades — and for anyone anywhere in the country who used Roundup and now has cancer and is wondering whether the Supreme Court just took their case away. It did not. Here is what changed, what survived, and what to do about it.
The Ruling in Plain English: What the Supreme Court Did on June 25, 2026
The United States Supreme Court ruled 7-2 in favor of Bayer, holding that the Federal Insecticide, Fungicide, and Rodenticide Act — the federal pesticide law known as FIFRA — preempts state-law failure-to-warn claims in Roundup cancer lawsuits. What that means in practice: you can no longer go into court and argue that Bayer or Monsanto should have added a cancer warning to the Roundup label beyond the warning language the Environmental Protection Agency approved.
The reasoning is federal preemption. Under FIFRA, the EPA has authority over pesticide registration and labeling. When the EPA reviews and approves a pesticide label, that label becomes the federal standard. The Supreme Court held that state tort law cannot impose a different or additional labeling requirement — which is exactly what a failure-to-warn claim does when it argues the label should have carried a cancer warning the EPA did not require.
The ruling does not end Roundup lawsuits entirely. Instead of arguing Bayer failed to warn users, attorneys will now have to prove the product itself was unsafe through claims such as negligent design.
That distinction — between “they should have warned you” and “the product itself was unsafe” — is the entire legal landscape now. The first theory is preempted. The second is not.
Two things the ruling explicitly does not do. First, it does not determine whether Roundup causes cancer. The Supreme Court decided a preemption question — a legal question about which level of government controls pesticide labels — not a scientific question about whether glyphosate is carcinogenic. Second, it does not end the Roundup litigation. Thousands of cases remain pending. The legal theory has shifted, but the courthouse doors are open.
What FIFRA Preemption Means and Why It Closed the Failure-to-Warn Door
FIFRA is the federal law that governs how pesticides are registered, labeled, and sold in the United States. Under FIFRA, no pesticide can be sold or distributed in this country unless the EPA has approved it and accepted its label. The EPA reviews the proposed labeling — including warnings, precautions, and use instructions — and decides what the label must say. Once the EPA approves that label, it becomes the federal standard.
The preemption clause in FIFRA prohibits states from imposing labeling or packaging requirements that are “in addition to or different from” what FIFRA requires. For decades, the question was whether a state-law tort claim — a lawsuit arguing that a pesticide manufacturer should have warned about a risk the EPA-approved label did not mention — counts as a state “requirement” that is “in addition to” the federal label. The Supreme Court’s 7-2 ruling answers that question: yes, it does. A state-law failure-to-warn claim that would require a cancer warning beyond what the EPA approved is preempted by FIFRA.
Here is why this mattered so much to plaintiffs. Failure-to-warn was the most straightforward theory in Roundup litigation. The argument was simple: Monsanto knew or should have known that glyphosate was associated with cancer, and it failed to put an adequate warning on the label. Under failure-to-warn, the plaintiff did not have to prove that Roundup was defectively designed or that no safe alternative existed — only that the warning was inadequate. That is a lower burden of proof, and it was the theory that produced the early plaintiff verdicts in Roundup cases.
With that theory now preempted, every plaintiff faces a harder path. But the path exists. And the evidence that made failure-to-warn cases powerful — internal Monsanto documents about what the company knew and when — becomes even more critical under the theories that survived.
What Remains Viable: Three Theories That Still Work
The Supreme Court’s ruling closed the failure-to-warn door. It did not close the doors that run alongside it. Three theories remain viable for Roundup cancer plaintiffs, and each one is where the post-ruling litigation is heading.
Negligent Design Defect
The primary viable path post-ruling is negligent design defect. Under this theory, the plaintiff does not argue that the label was missing a warning — the plaintiff argues that the product itself was inherently unsafe in its formulation or design. To win on this theory, you must prove that Roundup’s formulation created an unreasonable risk of cancer that could have been eliminated or reduced by a feasible alternative design.
This is a harder theory than failure-to-warn because it requires more sophisticated expert testimony. You need an industrial chemist or formulation expert to testify that the specific composition of Roundup — the glyphosate salt, the surfactants, the adjuvants — created a cancer risk that a different formulation would not have. You need evidence of a reasonable alternative design — a formulation that would have been equally effective as an herbicide but carried a lower carcinogenic risk. And you need proof that the alternative was technologically feasible at the time the product was sold.
But here is what makes negligent design powerful post-ruling: it goes to the heart of the product, not the label. The EPA’s approval of a label does not immunize a manufacturer from liability for designing a product that is unreasonably dangerous. The Supreme Court’s ruling was about labeling requirements, not about product safety. A state tort law that says “this product was defectively designed” is not imposing a labeling requirement — it is imposing a product-safety requirement, which is a different legal animal.
The shift from failure-to-warn to negligent design does not reduce the damages ceiling — it increases the evidentiary burden to reach it. A Roundup cancer case with strong causation proof, a clear non-Hodgkin lymphoma diagnosis, and a well-documented exposure history can still reach multi-million-dollar verdict ranges. But getting there now requires expert testimony that a generalist lawyer unfamiliar with design-defect litigation would not know how to build.
Suppression of Scientific Evidence and Fraudulent Concealment
The second viable theory — and the one that may carry the most punitive-damages exposure — is suppression of scientific evidence, also framed as fraudulent concealment. Under this theory, the plaintiff argues that Monsanto knew of the cancer risks associated with glyphosate, suppressed unfavorable research, and failed to disclose its findings to regulators and the public.
This theory is distinct from failure-to-warn. It is not about what the label said or did not say. It is about what the company did behind closed doors — whether it buried studies, ghostwrote scientific literature, influenced regulatory assessments, or manipulated the scientific record to keep the cancer question unresolved. If the discovery process produces internal Monsanto emails, research protocols, or communications reflecting awareness of carcinogenic risk and a deliberate decision to suppress that information, the suppression theory supports both compensatory liability and punitive damages.
The reason this theory matters so much after the Supreme Court ruling is that it does not depend on the label at all. A company can be liable for fraudulent concealment regardless of what the EPA-approved label says, because the duty not to fraudulently conceal material safety information is independent of the duty to warn on a product label. The preemption ruling does not touch it.
Negligent Undertaking and Failure to Investigate
The third theory is negligent undertaking — the argument that Monsanto had a duty to adequately investigate the potential health concerns associated with long-term glyphosate exposure and breached that duty by conducting insufficient research, commissioning biased studies, ignoring warning signs in its own data, or failing to follow up on adverse findings.
This theory is about what the company should have done to study its own product — not what it should have said on the label. If Monsanto’s internal research raised red flags about carcinogenicity and the company chose not to investigate further, or commissioned studies designed to produce favorable results rather than honest ones, the negligent-undertaking theory holds the company answerable for that failure.
All three theories — negligent design, suppression, and failure to investigate — share one thing: they target what the company did or failed to do with the product itself and with the science behind it, not what the label said. That is what makes them survive the FIFRA preemption ruling.
Bayer AG and Monsanto: The Company Behind Roundup
The corporate defendant in every Roundup cancer case is not one company but two, layered together in a structure that matters for how the case is built and where the money sits.
Monsanto Company is the original developer, manufacturer, and marketer of Roundup. Monsanto developed glyphosate in the 1970s, brought Roundup to market, and built it into the most widely used agricultural herbicide in the world. For decades, Monsanto controlled the science, the regulatory submissions, and the marketing of Roundup. Every internal document about what was known and when — the emails, the research protocols, the communications with regulators — originated at Monsanto.
Bayer AG, the German pharmaceutical and chemical giant, acquired Monsanto in 2018. With the acquisition, Bayer assumed liability for the existing and future Roundup litigation. Bayer is the current corporate parent and the defendant of record in thousands of pending cancer lawsuits nationwide. When you sue over Roundup today, you are suing Bayer — but the conduct you are challenging is Monsanto’s.
This corporate structure matters for two reasons. First, the internal Monsanto documents — the ones that prove what the company knew about cancer risks and whether it suppressed that information — are now in Bayer’s possession. Bayer controls the discovery. Second, Bayer is a deep-pocket defendant with the resources to fight every case aggressively — but also with the resources to settle cases it considers too dangerous to try. The post-ruling landscape may actually incentivize Bayer to resolve cases with strong causation profiles and clear suppression evidence rather than face design-defect verdicts that could set damaging precedents.
As of mid-2026, the federal Roundup multidistrict litigation — MDL-2741, consolidated before Judge Vince Chhabria in the Northern District of California — still had thousands of pending actions. Individual cases are also filed in state courts across the country, including in Iowa. Joining the MDL does not merge your case into one giant pot — you keep your own claim, your own facts, and your own right to a trial. The MDL centralizes pretrial work so that shared evidence, expert testimony, and legal arguments are developed once rather than in every individual courtroom.
The Science: Glyphosate, Cancer, and the Divide Between EPA and IARC
The scientific question at the center of every Roundup case — whether glyphosate causes cancer — was not answered by the Supreme Court ruling. The ruling was about preemption law, not about carcinogenicity. The scientific fight continues in every case that proceeds under negligent design or suppression theories.
The divide is real and it is stark. On one side is the International Agency for Research on Cancer, the World Health Organization’s cancer arm. In 2015, IARC classified glyphosate as “probably carcinogenic to humans” — its Group 2A category, reserved for substances where there is limited evidence of cancer in humans and sufficient evidence in animals, supported by strong mechanistic evidence. IARC’s assessment was based on a review of the available scientific literature, including studies showing associations between glyphosate exposure and non-Hodgkin lymphoma.
On the other side is the U.S. Environmental Protection Agency. The EPA has historically maintained that glyphosate is “not likely to be carcinogenic to humans.” The EPA’s position is based on its own review of studies — many of them submitted by Monsanto — and its registration review process under FIFRA. The EPA’s position is the one that controls the label, which is why the Supreme Court’s preemption ruling runs through FIFRA.
Here is the critical point for a Roundup plaintiff: the EPA’s position is not a judicial finding that glyphosate is safe. It is a regulatory classification made through a process that relies heavily on industry-submitted data — which is exactly why the suppression-of-evidence theory matters. If discovery reveals that Monsanto influenced the studies the EPA relied on, or that unfavorable data was withheld from the EPA, the integrity of the EPA’s classification itself becomes part of the case. The suppression theory does not just prove what Monsanto hid from the public — it can undermine the very regulatory finding that Bayer uses as its primary defense.
The Medicine: Non-Hodgkin Lymphoma and What It Does to a Family
Roundup cancer cases predominantly involve non-Hodgkin lymphoma — a cancer of the lymphatic system that begins in white blood cells called lymphocytes. NHL is not a single disease but a group of blood cancers that share an origin in the lymphatic system. The most common types in Roundup litigation are diffuse large B-cell lymphoma and follicular lymphoma, though other subtypes appear as well.
The mechanism by which glyphosate is alleged to cause NHL is through genotoxicity — damage to the DNA in blood-forming cells. Glyphosate and its formulations have been shown in some laboratory studies to cause chromosomal damage, oxidative stress, and disruption of cellular pathways that regulate cell death and proliferation. The IARC classification was based in part on this mechanistic evidence, together with epidemiological studies showing elevated NHL rates in heavily exposed agricultural workers.
The medical reality of non-Hodgkin lymphoma is what drives the damages in these cases. Treatment can involve chemotherapy regimens that span months — R-CHOP and similar protocols that combine multiple drugs administered in cycles. Some patients require radiation therapy. Some undergo immunotherapy. For aggressive cases or relapses, a stem cell transplant may be necessary — a process that involves harvesting the patient’s own stem cells, administering high-dose chemotherapy to destroy the bone marrow, and then reinfusing the stem cells to rebuild the immune system. A stem cell transplant can mean weeks in the hospital, a year or more of recovery, and a lifetime of compromised immunity.
The costs are enormous. Chemotherapy drugs, biologic agents like rituximab, imaging studies, bone marrow biopsies, hospital stays, and ongoing surveillance — the medical bills alone can run into hundreds of thousands of dollars. Add lost wages during treatment and recovery, diminished earning capacity if the patient cannot return to the same work, and the non-economic toll — the fear, the pain, the exhaustion, the months when the family’s life stops so the patient can survive — and the full measure of the loss comes into focus.
For families who lost someone to NHL, the damages include wrongful death and survival claims: the financial support the person would have provided, the companionship and guidance that were taken, the medical bills incurred before death, and the conscious pain and suffering the deceased experienced between diagnosis and death. If you have lost a family member to Roundup-related cancer, wrongful death claims carry their own legal framework and deadlines that run alongside — not after — the personal injury claims.
Documenting Your Exposure: What Farmers Must Preserve Now
If you used Roundup and have been diagnosed with non-Hodgkin lymphoma or another cancer potentially linked to glyphosate exposure, the single most important thing you can do — today, before you talk to anyone from the company, before you sign anything, before you post anything online — is document your exposure history. Here is what that means for a farmer.
Write down every year you used Roundup. Go back as far as you can — the 1980s, the 1990s, the 2000s, through to the present. For each period, estimate how many acres you treated, how frequently you applied it per season, what concentration or formulation you used, and what application method you employed — backpack sprayer, tractor-mounted sprayer, aerial application, hand-held sprayer for spot treatment. Note whether you mixed the concentrate yourself, which means you handled the undiluted product with your bare hands or gloved hands. Note whether you sprayed in windy conditions that caused drift back onto you. Note whether you wore protective equipment — and if not, why not. The label did not always require it, and that fact itself may be relevant.
Gather purchase records. Agricultural chemical purchase receipts, farm-supply store records, cooperative receipts, credit card statements showing Roundup purchases — anything that documents how much you bought and when. These records can disappear. Farm-supply co-ops may purge old purchase records on routine business-retention schedules. Credit card statements may only be available for a limited period. Pull what you can now.
Document your medical history. The date of your cancer diagnosis, the pathology report confirming the specific type of lymphoma, your treatment records, your chemotherapy regimen, your hospital stays, your current medical status — all of it. If you had blood work or medical exams before your diagnosis that showed abnormalities, those records matter too. They can help establish a timeline connecting exposure to disease.
Write down the names of anyone who worked with you — family members, hired hands, neighbors who saw your spraying practices, anyone who can corroborate your exposure history. Memory fades. People move. The witness who can confirm you mixed Roundup every spring for twenty years may not be available five years from now.
The Evidence Clock: Corporate Records and How Fast They Disappear
In a Roundup cancer case post-ruling, the evidence that wins is not just your exposure history — it is what Monsanto knew and when. The corporate documents that prove knowledge, suppression, and failure to investigate are the spine of the negligent design and fraudulent concealment theories. Here is what exists, who holds it, and how fast it can legally disappear.
Internal Monsanto and Bayer corporate communications — emails, memos, research protocols, internal scientific assessments, and communications reflecting awareness of carcinogenic risk. These are the documents that prove what the company knew, when it knew it, and whether it suppressed unfavorable findings. Much of this material has already been produced in the existing multidistrict litigation, but newly identified communications and post-acquisition Bayer records may still be at risk. Corporate document-retention policies and litigation holds govern these records. A preservation letter — sent the moment a case is opened — is what freezes them before they can be destroyed.
EPA regulatory submissions and correspondence between Monsanto and the EPA — these records establish what safety information was provided to regulators versus what was withheld. They frame the scope of the preemption defense by showing what the EPA actually reviewed when it approved the Roundup label. If Monsanto provided selective data to the EPA — favorable studies without the unfavorable ones — the integrity of the EPA’s classification becomes part of the case. These federal agency records are generally preserved, but FOIA request processing times can delay acquisition by months or longer.
Internal and commissioned research studies on glyphosate health effects — studies Monsanto conducted or funded, including raw data, study designs, and the gap between what the studies found and what was published. These are central to both the suppression theory and the failure-to-investigate theory. Scientific studies are typically retained, but they may be embedded in broader corporate document productions. Identifying and extracting the key studies requires targeted discovery.
Plaintiff-specific exposure documentation and medical records — your purchase records, application logs, medical records, and witness statements. These are the records that prove specific causation — that your cancer is connected to your Roundup use. Agricultural chemical purchase receipts and application logs can be destroyed by routine business practices. Personal medical records should be preserved immediately by requesting complete copies from every treating provider.
The IARC monograph and independent scientific literature — published, peer-reviewed studies on glyphosate carcinogenicity. These support general causation — the scientific basis for linking glyphosate exposure to non-Hodgkin lymphoma. Published literature is permanently available, but the scientific landscape evolves. New studies may emerge in the post-ruling environment that strengthen or complicate the causation case.
The fastest-dying records are your personal exposure documents — the purchase receipts and application logs that prove how much Roundup you used and when. Those records can be purged on routine business schedules. The day you call a lawyer is the day the preservation letter goes out — to Bayer, to the farm-supply co-op, to every entity that holds a piece of your exposure history — ordering them to freeze those records before they are legally erased.
Iowa’s Legal Framework: Deadlines, Fault Rules, and Damages
This is a federal preemption ruling with nationwide effect, but individual Roundup cases filed in Iowa — whether in the U.S. District Court for the Northern District of Iowa or in Iowa state courts in Linn County and across the state — are governed by Iowa’s product liability and tort law. Here is what Iowa law means for your case.
The statute of limitations. Iowa’s personal injury statute of limitations generally gives you two years to file a lawsuit from the date the cause of action accrued. In a cancer-from-herbicide case, that clock does not start on the day you sprayed Roundup — it starts when you knew or reasonably should have known that your cancer was connected to your Roundup exposure. This is the discovery rule, and it is critical for toxic tort cases where the disease can take years or decades to develop after the exposure. The date of your cancer diagnosis is typically the starting point, but the exact accrual date can be litigated — which is why you should not gamble on having plenty of time. The deadline is real, it is running, and the Supreme Court ruling did not stop it or extend it.
Comparative fault. Iowa follows a modified comparative fault system. Your recovery is reduced by your share of fault, and if you are more at fault than the defendant, you are barred from recovering entirely. In a Roundup case, the defense may argue that you used the product improperly, that you failed to wear protective equipment, or that you ignored label instructions. Every percentage point of fault they pin on you is money out of your recovery — which is why documenting that you used the product as it was designed and labeled to be used is so important.
Damage caps. Iowa does not impose a general cap on compensatory or punitive damages in product liability cases against non-governmental defendants. This is significant. It means that a jury in an Iowa Roundup case can award the full measure of compensatory damages — medical expenses, lost wages, earning capacity, pain and suffering, emotional distress — without a statutory ceiling cutting the number down. It also means punitive damages are not capped, which is where the suppression-of-evidence theory becomes a financial weapon.
Punitive damages. Iowa requires a showing of willful and wanton misconduct to recover punitive damages — a standard that aligns precisely with the suppression-of-evidence theory. If discovery produces internal Monsanto documents showing the company knew of cancer risks and deliberately suppressed that information, the willful-and-wanton threshold is met. Punitive damages in toxic tort cases against chemical manufacturers have historically reached significant multiples of compensatory awards, and Iowa’s lack of a general punitive cap means the exposure is real.
Venue considerations. For an Iowa farmer, the U.S. District Court for the Northern District of Iowa and Iowa state courts in Linn County are the natural venues. The jury pool in these agricultural counties is a double-edged sword. On one side, Iowa jurors understand farming. They know what Roundup is. They know what a sprayer looks like. They may have used the product themselves. That familiarity can make your exposure story concrete and credible in a way it never would be to an urban jury. On the other side, some rural Iowa jurors may have industry-friendly leanings — they may be reluctant to hold an agricultural chemical company liable for a product they themselves depend on. Voir dire — the jury selection process — has to be handled with care, exploring each juror’s relationship with Roundup, with farming, and with the chemical industry, so that the jury that decides your case is fair and open-minded.
What a Roundup Cancer Case Is Worth After the Ruling
Let us be honest about what the Supreme Court ruling did to case values. The loss of failure-to-warn as a liability theory narrows the path to recovery and increases expert costs. Cases with weaker causation profiles — limited exposure history, uncertain diagnosis, long gap between exposure and cancer — have lost value. The cost of proving a negligent design case, with its requirement for formulation experts and alternative-design evidence, is higher than the cost of proving a warning was missing.
But cases with strong facts have not lost their value. A farmer with decades of documented Roundup use, a clear diagnosis of non-Hodgkin lymphoma, and exposure evidence that connects the two still has a case worth pursuing — and potentially worth a significant amount.
Individual case values in Roundup litigation typically range from approximately $250,000 on the low end for cases with moderate exposure and treatment profiles, to $5,000,000 or more for catastrophic cases involving strong causation, extensive treatment, and clear evidence of corporate suppression. The wide range reflects the variability in exposure intensity, cancer type and severity, treatment costs, lost earning capacity, the strength of the suppression evidence, and the availability of punitive damages.
Cases involving death add wrongful death and survival damages — the lost financial support, the lost companionship, the conscious pain and suffering before death, the funeral expenses, the medical bills incurred in the final illness. A fatal Roundup cancer case with strong suppression evidence can carry value above the personal injury range, particularly where punitive damages are available.
The suppression-of-evidence theory is what separates a modest case from a significant one. Without suppression evidence, the case is about product design and causation — a hard fight with uncertain damages. With suppression evidence — internal Monsanto emails showing knowledge of cancer risk and a deliberate decision to bury it — the case becomes about corporate misconduct, and that is where punitive damages live. Iowa’s willful-and-wanton standard for punitives, combined with no general cap on punitive awards, means that a case with strong suppression evidence has a damages ceiling that is effectively uncapped.
Mass tort settlement values per plaintiff typically run lower than individual verdicts, but they aggregate into billions across the full docket. Bayer has already committed substantial sums to resolving Roundup claims, and the post-ruling landscape may actually incentivize the company to resolve cases with strong causation profiles rather than face design-defect verdicts that could establish unfavorable precedents.
Past results depend on the facts of each case and do not guarantee future outcomes. What we can tell you is what the legal framework permits and what the evidence in your specific case supports — and we can tell you honestly whether your case is strong enough to pursue under the new legal standard.
The Defense Playbook: How Bayer Fights These Cases
Bayer’s defense strategy has shifted with the ruling, but the core plays remain recognizable. Here are the moves you should expect — and the counter to each one.
Play 1: “The EPA said glyphosate is not likely to be carcinogenic.” Bayer will lean heavily on the EPA’s classification to argue that the product is safe and that your cancer came from something else. The counter: the EPA’s position is a regulatory classification, not a judicial finding of safety. IARC — the world’s leading cancer research agency — disagrees. And if discovery reveals that Monsanto influenced the studies the EPA relied on, the integrity of the EPA’s classification is itself in question. The suppression theory attacks the foundation of this defense.
Play 2: “FIFRA preemption bars your claim.” Bayer will argue that the Supreme Court’s ruling extends beyond failure-to-warn to bar all Roundup claims. The counter: the ruling was about labeling requirements, not product design. Negligent design, suppression, and failure to investigate are not labeling claims — they are product-safety and corporate-conduct claims. The courts that have considered these theories post-ruling recognize the distinction. Bayer will push the preemption defense as far as it can, but the ruling’s actual scope is narrower than Bayer would like a jury to believe.
Play 3: “Your cancer came from something else.” Bayer will argue that non-Hodgkin lymphoma has many causes — age, genetics, other chemical exposures, immunosuppression — and that you cannot prove your cancer came from Roundup specifically. The counter: dose reconstruction. Your documented exposure history — the years, the acres, the frequency, the mixing and spraying practices — is combined with epidemiological evidence showing elevated NHL rates in heavily exposed workers and with toxicological evidence of glyphosate’s genotoxic mechanisms. A board-certified oncologist and a toxicologist working together can build specific-causation testimony that ties your exposure to your disease. This is harder than it was under failure-to-warn, but it is doable with the right experts and the right exposure documentation.
Play 4: “The quick settlement offer.” Bayer may offer a settlement that looks like real money but is a fraction of what your case is worth — hoping you take it before you understand the full value of your claim, especially the punitive exposure from suppression evidence. The counter: know what your case is worth before you respond to any offer. A settlement that looks generous in the first month can look like a fraction of justice in the third year. Every offer has to be evaluated against the full measure of compensatory and punitive damages, the strength of your causation proof, and the quality of the suppression evidence in the broader litigation.
Play 5: “Delay until the statute of limitations runs.” Bayer knows that every day that passes is a day closer to your deadline. The defense may use procedural motions, discovery disputes, and scheduling delays to push your case toward the limitations cliff. The counter: file early. The discovery rule may protect you, but it is not a guarantee — and some states impose outer deadlines (statutes of repose) that can cut off a claim even before discovery. Do not gamble your case on a court’s willingness to extend the deadline. Talk to a lawyer while the clock is still working for you, not against you.
Play 6: “You assumed the risk.” Bayer may argue that you knew the risks of using a chemical herbicide and chose to use it anyway. The counter: you used the product as it was designed and labeled to be used. If the label did not warn of cancer — because Monsanto successfully kept the cancer warning off the label — you cannot have assumed a risk you were never told about. And if Monsanto suppressed the evidence that would have led to a warning, the company cannot now blame you for not knowing what it deliberately hid.
How a Case Is Built Under the New Legal Framework
Here is how a Roundup cancer case is actually built in the post-ruling landscape — the chronological walk from the day you call to the day a number is on the table.
Week one: the preservation letter goes out. The day you call, letters go to Bayer and to every entity that holds evidence of your exposure — farm-supply co-ops, agricultural retailers, medical providers — ordering them to preserve records. This freezes the corporate documents and the purchase records before they can be destroyed. The letter is the first shot, and it is the one that prevents the evidence from disappearing.
Weeks two through four: intake and exposure reconstruction. We build your exposure history from the ground up — every year of Roundup use, every acre treated, every application method, every piece of corroborating evidence. We pull your medical records — the pathology report, the treatment history, the timeline from exposure to diagnosis. We identify witnesses — coworkers, family members, neighbors who can confirm your spraying practices.
Months one through three: expert recruitment. Under the negligent design framework, we recruit the experts who will prove your case. An epidemiologist to testify about the association between glyphosate exposure and non-Hodgkin lymphoma. A toxicologist to explain the biological mechanism — how glyphosate damages DNA in blood-forming cells. An oncologist to tie your specific diagnosis to your specific exposure. An industrial chemist or formulation expert to testify about the product’s design and the feasibility of safer alternatives. These experts are the difference between a case that survives summary judgment and one that does not.
Months three through twelve: discovery. This is where the corporate documents come out. We serve targeted discovery on Bayer — seeking internal Monsanto emails about glyphosate and cancer, research protocols, ghostwriting of scientific literature, communications with EPA, and any documents reflecting awareness of carcinogenic risk. The discovery process is adversarial. Bayer will resist, object, and produce selectively. The fight over what comes out is often the fight that determines the case.
Months twelve through twenty-four: depositions and motions. Once the documents are produced, we take depositions — of the Monsanto scientists who designed the studies, of the regulatory affairs personnel who managed the EPA relationship, of the corporate executives who oversaw the safety assessments. We also defend your deposition, where Bayer’s lawyers will ask you about your exposure history, your medical history, and your use of Roundup. Pre-trial motions — including Bayer’s motion for summary judgment arguing that your claims are preempted or that your causation evidence is insufficient — are filed and argued during this period.
Year two and beyond: trial or settlement. If the case survives summary judgment, it moves toward trial or settlement. Cases with strong causation profiles and clear suppression evidence are the ones Bayer is most likely to resolve — because taking those cases to a jury risks a verdict that includes punitive damages and sets a precedent for every other case on the docket. Cases that proceed to trial are tried to a jury — in Iowa, potentially a jury of your neighbors, people who know what farming looks like, who may have used Roundup themselves, and who will decide whether the product caused your cancer and what your loss is worth.
The number at the end is built from all of it — the exposure documentation, the expert testimony, the corporate documents, the deposition transcripts, and the willingness to take the case to a jury if Bayer will not offer what it is worth.
Your First Steps: A Practical Roadmap
If you used Roundup and have been diagnosed with cancer — especially non-Hodgkin lymphoma — here is what to do, in order, starting today.
First: get your medical treatment. Nothing in this page is more important than your health. Follow your oncologist’s treatment plan. Keep every appointment. Take every medication as prescribed. Your medical records are the proof of your injury, and the quality of your treatment is the quality of your evidence.
Second: document your exposure before the records disappear. Write down your Roundup use history — years, acres, frequency, methods, protective equipment. Pull purchase records from farm-supply co-ops, agricultural retailers, and credit card companies. Request complete copies of your medical records from every treating provider — pathology reports, chemotherapy records, imaging studies, hospital discharge summaries. Do not wait. These records have expiration dates.
Third: do not sign anything from Bayer or Monsanto or any entity representing them. If you receive a letter, a phone call, or a visit from anyone offering to resolve your claim, do not respond. Do not give a recorded statement. Do not accept a check. Anything you sign can be used against you, and anything you say can be quoted out of context. The company is not your friend in this process.
Fourth: do not post about your case on social media. Defense investigators monitor social media. A photograph of you doing something physical can be used to argue your injuries are not as severe as you claim. A post about your cancer treatment can be taken out of context. The safest approach is to say nothing publicly about your case until it is resolved.
Fifth: call a lawyer. Not next month. Not after the treatment is done. Not after you see how the legal landscape develops. Today. The statute of limitations is running. The evidence is aging. The preservation letter that freezes the corporate documents and the purchase records is the first thing a lawyer sends, and it cannot be sent until you make the call. The consultation is free. You pay nothing unless we win your case.
Why Attorney911
Ralph Manginello has spent 27-plus years in courtrooms, including federal court. He was a journalist before he was a lawyer — which means he learned early that the story is in the documents, not the press releases. He built this firm on the principle that the company’s own records, obtained through aggressive discovery and held up in front of a jury, are the most powerful evidence there is. That principle is exactly what the post-ruling Roundup landscape demands — because the suppression theory lives or dies on what the corporate documents show.
Lupe Peña spent years inside a national insurance-defense firm — the rooms where claims like yours are priced, devalued, and defended. He knows how the other side values a case, how they decide what to offer and what to fight, and how they use delay and procedural pressure to push plaintiffs toward settling for less. He now uses that knowledge for injured clients. He conducts full consultations in Spanish without an interpreter — because a family that prays in Spanish deserves to understand their legal rights in the same language.
We take cases on contingency. That means you pay nothing unless we win. Our fee is 33.33 percent before trial and 40 percent if the case goes to trial. We do not get paid unless you get paid. The consultation is free, and we have 24/7 live staff — not an answering service, but people who can take your call at 2 a.m. when the fear is loudest and the questions will not wait until morning.
We are based in Houston, Texas, and we take cases in Iowa and across the country, working with local counsel and appearing pro hac vice where the court requires it. We do not claim an office in Iowa or an Iowa bar admission. What we bring is the experience, the resources, and the willingness to fight Bayer in a courtroom — and the honesty to tell you whether your case is strong enough to pursue under the new legal standard before you spend a minute or a dollar on it.
We handle toxic tort and product liability cases because the corporate documents, the regulatory records, and the medical evidence are where justice lives — and because the company that put a product on the market and buried what it knew about the risk is the company that should answer for what happened to the people who used it.
If we are not the right fit for your case, we will tell you. If your case is not strong enough to pursue under the post-ruling standard, we will tell you that too — because honesty about your prospects is more valuable than false hope, and your trust is more important than a fee.
Call us at 1-888-ATTY-911. That is 1-888-288-9911. Or contact us online — the consultation is free, confidential, and you will speak with a person, not a form.
Hablamos Español.
Frequently Asked Questions
Can I still file a Roundup lawsuit after the Supreme Court ruling?
Yes. The Supreme Court’s 7-2 ruling on June 25, 2026, blocked one legal theory — failure-to-warn, the argument that Bayer should have added a cancer warning to the Roundup label beyond what the EPA approved. It did not block other theories, including negligent design, fraudulent concealment, and negligent failure to investigate. You can still file a lawsuit. The legal theory has changed; your right to sue has not.
What is FIFRA preemption and why did the Supreme Court rule for Bayer?
FIFRA is the Federal Insecticide, Fungicide, and Rodenticide Act, the federal law that governs pesticide registration and labeling in the United States. Under FIFRA, the EPA approves pesticide labels, and states cannot impose labeling requirements that are different from or in addition to the federal standard. The Supreme Court held that a state-law failure-to-warn claim — which would require a cancer warning the EPA did not mandate — amounts to a state labeling requirement that conflicts with FIFRA. That is preemption: federal law overrides state law where the two conflict.
What is negligent design and how does it differ from failure to warn?
Failure to warn argues the label was inadequate — the company should have told you about a risk it did not disclose. Negligent design argues the product itself was defectively formulated — the specific composition of Roundup created an unreasonable cancer risk that a feasible alternative design would have eliminated or reduced. Negligent design requires more expert testimony and more sophisticated proof, but it is not preempted by FIFRA because it challenges the product’s safety, not its label.
How long do I have to file a Roundup cancer lawsuit in Iowa?
Iowa’s personal injury statute of limitations generally gives you two years from the date your cause of action accrued. In a cancer case involving latent exposure, the clock typically starts when you knew or reasonably should have known that your cancer was connected to your Roundup exposure — usually the date of diagnosis or the date a doctor told you the cancer might be related to glyphosate. But this is not a guarantee. Some states impose outer deadlines that can cut off a claim before discovery. Talk to a lawyer to confirm the deadline for your specific situation.
What kind of cancer is linked to Roundup?
The cancer most commonly associated with Roundup exposure in the litigation is non-Hodgkin lymphoma — a group of blood cancers that originate in the lymphatic system. Other hematologic malignancies, including certain leukemias and related blood disorders, have also been alleged in some cases. The scientific basis for the association is the IARC classification of glyphosate as “probably carcinogenic to humans” (Group 2A) in 2015, based on epidemiological evidence of elevated NHL rates in exposed workers and mechanistic evidence of DNA damage.
What evidence do I need to prove my Roundup case?
Two categories of evidence are essential. First, exposure documentation — how long you used Roundup, how much, how frequently, what concentration, what application method, and whether you mixed the concentrate yourself. This comes from your own recollection, purchase records, application logs, and witness testimony. Second, medical documentation — your cancer diagnosis, pathology reports, treatment records, and the opinion of a qualified oncologist that your cancer is consistent with glyphosate exposure. In addition, the case may rely on corporate documents from Monsanto showing what the company knew about cancer risks and whether it suppressed that information.
How much is a Roundup cancer case worth?
Case values vary widely based on exposure intensity, cancer type and severity, treatment costs, lost earning capacity, the strength of causation evidence, and the availability of punitive damages. Individual cases can range from approximately $250,000 for moderate-exposure cases to $5,000,000 or more for catastrophic cases with strong causation and clear evidence of corporate suppression. Cases involving death add wrongful death damages. The Supreme Court ruling has made cases harder to prove and more expensive to litigate, which has depressed values for weaker cases — but cases with strong facts and suppression evidence maintain significant value. Past results depend on the facts of each case and do not guarantee future outcomes.
Will the Supreme Court ruling affect my pending Roundup case?
If your pending case was built on a failure-to-warn theory, it will need to be re-evaluated under the new legal framework. The failure-to-warn claim is preempted. Your case can continue on alternative theories — negligent design, suppression, failure to investigate — but those theories require different evidence and expert testimony. If your case was already built on design-defect or suppression theories, the ruling may have less direct impact. Talk to your lawyer about how the ruling affects your specific pleadings and what amendments may be necessary.
What if I used Roundup for decades — does that help my case?
Yes. A longer, more intense exposure history strengthens the causation element of your case. The ability to document decades of regular Roundup use — especially if you mixed the concentrate, sprayed without full protective equipment, or experienced drift exposure — gives your experts a stronger foundation for testifying that your cancer is connected to your glyphosate exposure. Write down your exposure history in as much detail as you can recall, and gather purchase records to corroborate it.
Should I wait to see how the legal landscape develops before filing?
No. The statute of limitations is running regardless of the Supreme Court ruling. Evidence is aging — purchase records are being purged, witnesses are aging, and corporate documents may be subject to retention schedules that allow destruction. The legal landscape has already developed: the ruling is in, the surviving theories are known, and the path forward is clear. Waiting does not help your case. It only helps the defense. Call a lawyer now, while the evidence and the deadline are both still alive.
Can I still pursue punitive damages after the ruling?
Yes — if the suppression-of-evidence theory is supported by the facts of your case. The Supreme Court ruling preempted failure-to-warn claims. It did not preempt claims based on corporate misconduct — fraudulent concealment, suppression of scientific evidence, or deliberate failure to investigate known health risks. If discovery produces internal Monsanto documents showing the company knew of cancer risks and deliberately hid that information, the willful-and-wanton standard for punitive damages under Iowa law is met. And Iowa does not impose a general cap on punitive damages in product liability cases against non-governmental defendants. The punitive exposure is real, and it may be the single most powerful lever in post-ruling Roundup litigation.
If you used Roundup and you have cancer, the Supreme Court ruling is not the end of your story. It is a detour. The road is different now — harder, more technical, requiring lawyers who know how to build a negligent design case and mine corporate documents for evidence of suppression. But the road is open. Call us at 1-888-ATTY-911. The consultation is free. You pay nothing unless we win. Hablamos Español.