Litigation

The Cigna Group v. Celgene Corporation et al.

pending

1:25-cv-05237

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Court: S.D.N.Y.
Filed: 2025-06-24

Patents at issue (1)

Plaintiffs (1)

π The Cigna Group

Defendants (2)

Summary

Antitrust action in S.D.N.Y. naming the '939 formulation patent as part of an alleged monopolization scheme. Pending.

Case overview & background

Plain-language overview of the case: parties, accused product, patents at issue, and why the suit matters.

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Key legal developments & outcome

Major rulings, motions, claim construction, settlements, and the present posture or final disposition.

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Plaintiff representatives

Counsel of record for the plaintiff(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

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Defendant representatives

Counsel of record for the defendant(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

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Record id: 10555939-1-25-cv-05237 · edit in Admin

Further reading

Lumen View v. FindTheBest (2013-2016): when a defendant fought back, the troll paid
Same patent. Same plaintiff playbook. Different outcome — because the defendant had the resources and the will to fight. Most don't. That's the asymmetry this site is built to fix.
Finding prior art with free tools: Google Patents, Lens, Espacenet, and more
A serious paid prior-art search costs $5,000 to $20,000. The first 80% of what you'd find is sitting behind free tools — if you know how to drive them.
Patent term and expiration
Patents don't last forever. They don't even reliably last 20 years. The expiration date that actually matters depends on the earliest filing date, the maintenance schedule, and any USPTO or FDA delays the patent owner can claim back.
Patent law glossary
Sixty-plus patent-law terms, defined in one or two sentences each, with a link to the deeper article. The universal landing pad when an article uses a term you don't know.
Joint defense groups: economics, formation, and the privilege framework
An NPE sues twenty defendants on one patent. Solo, each faces $3-5M in defense costs. Pooled into a joint defense group, the per-defendant number drops to $200-500K. The economics only work if the privilege framework is set up correctly.

All resources →