The Third Circuit’s June 4, 2026 opinion in No. 26-1772 is now available, but practitioners should note an immediate limitation: the publicly provided case details here identify the court, docket number, filing date, and a link to the opinion, but do not include the opinion text itself. That means any substantive assessment of the panel’s holdings, doctrinal reasoning, or precedential effect depends on reviewing the slip opinion directly.

Even so, this filing is worth flagging for lawyers who track Third Circuit developments.

One of the most closely watched AI-adjacent copyright disputes in legal tech is moving deeper into the appellate phase. Thomson Reuters and Ross Intelligence are now before the Third Circuit in Thomson Reuters Enterprise Centre GmbH, et al v. Ross Intelligence Inc, a case that has become a bellwether for how courts may treat the use of proprietary legal content in building competing research tools.

The dispute stems from allegations that Ross used Thomson Reuters’ Westlaw headnotes and related editorial material to train or develop its legal research platform without authorization.