AI Legal Cases

Thomson Reuters Enterprise Centre GmbH v. Ross Intelligence Inc.

U.S. District Court, D. Delaware · Docket 1:20-cv-00613-SB

Decided

Court
U.S. District Court, D. Delaware
Docket
1:20-cv-00613-SB
Filed
May 6, 2020
Category
Copyright
Judge
Hon. Stephanos Bibas (sitting by designation)
Plaintiffs
Thomson Reuters; West Publishing Corp.
Defendants
Ross Intelligence Inc.
Current status
Decided February 2025: use of Westlaw headnotes to train a competing legal AI was not fair use; appellate proceedings followed
Docket and filings
View on CourtListener

Latest development · June 26, 2025

TRANSCRIPT REQUEST by ROSS Intelligence Inc. for proceedings held on 12/05/2024 before Judge Stephanos Bibas, (Moore, David) (Entered: 06/26/2025)

Executive summary

Thomson Reuters alleged Ross trained its legal research AI on Westlaw headnotes obtained through an intermediary after being refused a license. The court held the copying was not transformative and competed directly with Westlaw.

Why it matters

The landmark: first merits ruling on AI training, and its market-competition test is the analytical spine courts now apply across the docket.

Models, datasets, and materials at issue

Target models

  • Ross legal research AI

Disputed datasets

  • Westlaw headnotes (via LegalEase bulk memos)

Materials at issue

Editorial legal headnotes

Docket timeline

  • June 26, 2025

    TRANSCRIPT REQUEST by ROSS Intelligence Inc. for proceedings held on 12/05/2024 before Judge Stephanos Bibas, (Moore, David) (Entered: 06/26/2025) Docket #808 →

  • June 18, 2025

    USCA Appeal Fees received: $605, receipt number 4179 re 805 USCA Order. (cdd) (Entered: 06/18/2025) Docket #806 →

  • June 17, 2025

    NOTICE OF APPEAL to the Third Circuit of 770 Memorandum Opinion, 772 Order,. Appeal filed by ROSS Intelligence Inc.. Filing fee $605, receipt number 4179. (rlr) (Entered: 06/20/2025) Docket #807 →

  • June 17, 2025

    ORDER of USCA granting Petition for Leave of Appeal. (sb2, ) (Entered: 06/17/2025) Docket #805 →

  • May 23, 2025

    MEMORANDUM OPINION. Signed by Judge Stephanos Bibas on 05/23/2025. (jfm) (Entered: 05/23/2025) Docket #804 →

  • April 10, 2025

    Pro Hac Vice Attorney Anne M. Voigts, Ranjini Acharya, Kayvan M. Ghaffari for ROSS Intelligence Inc. added for electronic noticing. Pursuant to Local Rule 83.5 (d)., Delaware counsel shall be the registered users of CM/ECF and shall be required to file all papers. (cdd) Docket →

  • April 7, 2025

    SO ORDERED: re 800 MOTION for Pro Hac Vice Appearance of Attorney Kayvan M. Ghaffari, Anne M. Voigts and Ranjini Acharya of Pillsbury Winthrop Shaw Pittman LLP. Ordered by Judge Stephanos Bibas on 04/07/2025. (oam) (Entered: 04/07/2025) Docket #802 →

  • April 7, 2025

    ORAL ORDER: I dismiss as moot D.I. 798 . Ordered by Judge Stephanos Bibas on 04/07/2025. (oam) (Entered: 04/07/2025) Docket #803 →

  • April 4, 2025

    ORDER: I GRANT Ross's motion for interlocutory appeal and stay pending appeal. D.I. 786 . Though I remain confident in my February 2025 summary judgment opinion, I recognize that there are substantial grounds for difference of opinion on controlling legal issues in this case. These issues have the p Docket #799 →

  • April 4, 2025

    MOTION for Pro Hac Vice Appearance of Attorney Kayvan M. Ghaffari, Anne M. Voigts and Ranjini Acharya of Pillsbury Winthrop Shaw Pittman LLP - filed by ROSS Intelligence Inc.. (Moore, David) (Entered: 04/04/2025) Docket #800 →

  • April 4, 2025

    Pro Hac Vice Fee - Credit Card Payment received for Kayvan M. Ghaffari, Anne M. Voigts, and Ranjini Acharya. ( re 800 MOTION for Pro Hac Vice Appearance of Attorney Kayvan M. Ghaffari, Anne M. Voigts and Ranjini Acharya of Pillsbury Winthrop Shaw Pittman LLP )( Payment of $ 150, receipt number ADEDC Docket #801 →

  • February 11, 2025

    Revised summary judgment opinion: Judge Bibas holds Ross's copying of Westlaw headnotes was not fair use and grants partial summary judgment to Thomson Reuters; ruling certified for interlocutory appeal to the Third Circuit. Docket →

  • May 6, 2020

    Complaint filed by Thomson Reuters and West Publishing against Ross Intelligence in the District of Delaware. Docket #1 →

Docket entries sync nightly from CourtListener and the RECAP Archive. Full filings are one click away on the linked docket.

Facts on this page were last verified against the docket on July 30, 2026. See how we track these cases, or return to all tracked cases.

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