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Thomson Reuters Enterprise Centre GmbH v ROSS Intelligence Inc

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Case Information
Case name Thomson Reuters Enterprise Centre GmbH v. ROSS Intelligence Inc.[1]
Court U.S. District Court for the District of Delaware; U.S. Court of Appeals for the Third Circuit[1][2]
Docket 1:20-cv-00613-SB (district court); 25-2153 (appeal)[1][2]
Filed May 6, 2020.[3]
Judge(s) Stephanos Bibas (sitting by designation in district court)[1]
Plaintiffs Thomson Reuters Enterprise Centre GmbH; West Publishing Corp.[1]
Defendants ROSS Intelligence Inc.[1]
Case type Civil copyright action involving legal-research training data[1]
Claims / issues Copyrightability of Westlaw headnotes; fair use of headnotes in material used to train a competing legal-research system[1]
Status Interlocutory appeal argued June 11, 2026; Third Circuit decision pending.[2]

Thomson Reuters Enterprise Centre GmbH v. ROSS Intelligence Inc. concerns use of Westlaw headnotes in material used to train a competing legal-research system. The case addresses copyrightability and fair use in machine-learning development.[1]

District-court ruling and appeal

In 2025, Judge Stephanos Bibas ruled that selected Westlaw headnotes were copyrightable and that ROSS’s copying was not fair use. The court certified controlling questions for interlocutory appeal, including whether short quotations or paraphrases of judicial holdings are copyrightable and whether the internal training use was fair.[1]

The Third Circuit heard argument in appeal No. 25-2153 on June 11, 2026. No appellate opinion was listed when this page was prepared.[2]

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 D. Del., memorandum opinion, ECF 804, filed May 23, 2025
  2. ↑ 2.0 2.1 2.2 2.3 Third Circuit oral-argument index, No. 25-2153, June 11, 2026
  3. ↑ CourtListener docket, reviewed September 22, 2026
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