Biogen Tecfidera Antitrust Class Action
Last verified October 7, 2026Source: courtlistener-litigationHow ClaimWatch verifies cases
Still being litigated: the claims below are allegations, not findings, and there is no settlement, claim form or payout yet.
Where this case stands
In litigation
The case has been filed and is being fought in court. There is no settlement, no claim form and no payout yet; many class actions are dismissed or never certified.
Pending in the District Court, N.D. Illinois (No. 1:24-cv-08700).
- September 20, 2024Case filed
What happened
A proposed class action against Biogen, Inc., apparently alleging violations of antitrust law concerning the multiple sclerosis drug Tecfidera. The case has been consolidated into In re: Tecfidera Antitrust Litigation, indicating that similar claims are being coordinated. These are allegations in a newly filed case and have not been proven.
Do you qualify?
No settlement exists yet, so there is nothing to file and no class definition to check. If the case settles, the settlement will define exactly who qualifies — watch this case and we'll let you know.
How to file
There is no claim to file yet. If this case reaches a settlement, a claim process will open — usually with an official settlement website and a filing deadline.
Common questions
- Can I file a claim in the Biogen Tecfidera Antitrust Class Action case?
- No. The case is still being litigated — there is no settlement, no claim form, and no payout. It was filed September 20, 2024 in the District Court, N.D. Illinois (No. 1:24-cv-08700).What a class action lawsuit is →
- Who are the attorneys in the Biogen Tecfidera Antitrust Class Action?
- For the plaintiffs: Carol V Gilden (Cohen, Milstein, Sellers & Toll, PLLC). From the public court docket.
Who's involved
Plaintiffs
- Mayor and City Council of Baltimore
Defendants
- Biogen, Inc.
Counsel for plaintiffs
- Carol V GildenCohen, Milstein, Sellers & Toll, PLLCRepresents Mayor and City Council of Baltimore9 tracked cases · $877.5M in disclosed settlementscgilden@cohenmilstein.com · (312) 357-0370
Other cases these firms appear in
- Tracleer Litigation Settlement · Cohen Milstein Sellers & Toll PLLC
- Doe v. Kupor Employment Class Action · Cohen Milstein Sellers & Toll PLLC
- Brown v. New York Life Insurance Company · Cohen Milstein Sellers & Toll PLLC
- Huddleston v. Caesars Entertainment Data Breach Class Action · Cohen Milstein Sellers & Toll PLLC
From the public court docket, contact details as filed; not an endorsement.
In the news
Headlines via NewsAPI.
Guides:What is a class action lawsuit?How class membership worksYour options as a class member
Summarised from public settlement documents; confirm terms on the official settlement website. ClaimWatch is not a law firm, and filing a claim is free.