Dupixent Lawyer

Find Out If You Have a Case

Free, confidential review by Attorney Matthew T. Marin. Prefer to talk? Call (888) 348-2735.

If you or a family member were diagnosed with cutaneous T-cell lymphoma (CTCL) or another T-cell lymphoma after taking Dupixent, a Dupixent lawyer can tell you in one conversation whether your diagnosis fits the cases consolidated in MDL 3180 and what it would take to file. This page explains what a Dupixent lawsuit attorney actually does, how to choose one, what it costs, and what happens after you call.

As of September 15, 2026: at least 36 member actions identified in MDL 3180. See the member-case ledger on the MDL 3180 tracker.

What does a Dupixent lawyer do?

A Dupixent lawyer brings a product-liability claim against the drug’s makers, Sanofi and Regeneron — not against the dermatologist or allergist who prescribed it. The claim is that the companies failed to adequately warn patients and doctors about the risk of T-cell lymphoma. The work has four parts: confirming the diagnosis and its timing against your Dupixent prescription history, collecting the pathology and dermatology records that show whether skin symptoms were treated as eczema before the lymphoma was found, matching your case to the injuries alleged in the federal litigation, and filing within your state’s deadline. Federal cases are consolidated in MDL 3180; your lawyer files your individual case and it is transferred there for pretrial proceedings.

Do you need a lawyer to join the Dupixent lawsuit?

Yes. MDL 3180 is not a class action you sign up for; it is a collection of individual lawsuits, each filed by an attorney for one patient. Whether your case is accepted, how it is pleaded, and whether it survives the manufacturers’ early motions depends on your individual filing. Whether you qualify is a separate question with its own page; this page is about what representation looks like once you do.

What a Dupixent attorney looks for in your case

• The diagnosis. Cutaneous T-cell lymphoma (including mycosis fungoides and Sézary syndrome) or another T-cell lymphoma, confirmed by biopsy, with the pathology report and the date.
• The prescription history. When Dupixent started, for what condition (atopic dermatitis, asthma, or another indication), and for how long before the diagnosis.
• The eczema-to-lymphoma timeline. Many patients’ lymphoma symptoms were treated as worsening eczema first; those records matter. See misdiagnosed eczema.
• The clock. Each state’s statute of limitations and its discovery rule. Our state pages cover the deadline rules for every state.

How to choose the right Dupixent lawyer

Ask three questions. First, does the firm handle pharmaceutical mass torts, or is it a general injury practice that will refer you out? Second, will the firm tell you plainly if your case is weak — a diagnosis that pre-dates Dupixent, or a lymphoma type outside the filed cases, is a harder claim, and a good lawyer says so up front. Third, who actually files and works your case — the firm you called, or a firm you have never heard of? Ask, and get the answer in writing.

How much does a Dupixent lawyer cost?

These cases are handled on contingency: there is no fee unless there is a recovery, and there are no upfront costs for the case review or the records request. If there is no recovery, you owe no attorney’s fee. The percentage and the handling of case expenses are set out in writing before you sign anything, and you can ask for that document in the first call.

What happens after you contact a Dupixent lawsuit attorney

1. A short screening call (about ten minutes): diagnosis, when Dupixent started and stopped, what it was prescribed for, and your state.
2. Records. We request the pathology report and prescription records; you do not need to have them in hand to start.
3. Case evaluation. We match your facts to the injuries alleged in the filed cases and to your state’s deadline, and tell you where you stand.
4. Filing. If the case is accepted, it is filed and transferred into MDL 3180.

What compensation can a Dupixent lawyer pursue?

Damages in a failure-to-warn case are individual, not a fixed schedule. A Dupixent attorney documents the cost of lymphoma treatment and monitoring, lost income, the physical and emotional toll of a cancer diagnosis, and, where the patient died, the losses to the family. No verdict or settlement has yet set a benchmark in MDL 3180, and any lawyer who quotes you a number before reviewing your records is guessing; our settlement amounts page explains how these cases are likely to be valued and why.

How a Dupixent attorney evaluates your case

Three questions decide most of it. Is the diagnosis a T-cell lymphoma confirmed by biopsy? Did Dupixent use precede it, and for how long? And is the claim inside your state’s deadline, counted from diagnosis under most states’ discovery rules? Cases that answer yes to all three are filed; cases that answer yes to two are usually worth a records request before anyone says no. Patients whose lymphoma was first treated as eczema are not disqualified — that history is common in the filed cases, and the dermatology records are part of the evidence. See qualifying lymphoma types.

Timeline: what a Dupixent lawsuit looks like from the first call

• Week 1: screening call, signed authorization, records requests sent to the dermatologist, oncologist and pharmacy.
• Records gathering: pathology and prescription records arrive, and how long that takes depends on how quickly providers respond; timeline and deadline analysis completed; case accepted or you are told why not.
• Filing: complaint filed and transferred into MDL 3180.
• Pretrial: the MDL will handle discovery and any bellwether selection for all cases together once the court lifts the stay; discovery is currently stayed and no bellwether schedule has been set. Progress is tracked on our MDL 3180 tracker.
• Resolution: settlement, bellwether verdicts, or remand to your home court for trial.

Why patients choose Marin & Murphy Law Firm as their Dupixent lawyer

The firm handles pharmaceutical and defective-device mass torts, publishes the litigation record it works from — the docket tracker, the FDA FAERS reports and the published studies on this site are maintained by the same team that reviews cases — and tells patients plainly when a case is weak. Marin & Murphy Law Firm is licensed in Rhode Island, South Carolina, Connecticut and Massachusetts and works with lawyers licensed across the country.

If you are calling for someone else

Spouses and adult children can start the process. A patient who has died may have a claim that a family member can bring; see caregivers and family and wrongful death.

Frequently asked questions