Court

U.S. Court of Appeals for the Third Circuit

Cited as: 3d Cir.
Jurisdiction: U.S.
Level: Federal appellate
Orders: 2

All orders out of 3d Cir.

3D CIR.Litigation

ROSS says it will ask Supreme Court to review Third Circuit Westlaw copyright loss

3D CIR.Court order

Third Circuit affirms Thomson Reuters win over ROSS on Westlaw headnotes and AI training

The U.S. Court of Appeals for the Third Circuit on September 29, 2026, affirmed a Delaware federal judgment that ROSS Intelligence infringed Thomson Reuters Westlaw headnotes and could not claim fair use for using them to train a competing AI legal research tool, Bloomberg Law and Copyright Lately reported. The precedential opinion, filed under temporary seal on September 29, is now public on the court's website.

Order (Bloomberg Law) → · Copyright Lately, LawSites, U.S. Court of Appeals for the Third Circuit +1Sept. 30