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Encyclopaedia Britannica v Perplexity AI Inc

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Case Information
Case name Encyclopaedia Britannica, Inc. v. Perplexity AI, Inc.[1]
Court U.S. District Court for the Southern District of New York[1]
Docket 1:25-cv-07546 (JLR) (SLC)[2]
Filed September 10, 2025[1]
Judge(s) Jennifer L. Rochon; Sarah L. Cave (discovery magistrate judge)[1][3]
Plaintiffs Encyclopaedia Britannica, Inc.; Merriam-Webster, Inc.[1]
Defendants Perplexity AI, Inc.[1]
Case type Civil copyright and trademark action[1]
Claims / issues Alleged infringement involving AI retrieval and generated responses[2]
Status September 2, 2026: additional discovery partly ordered; later conference outcome unverified.[2]

Encyclopaedia Britannica v. Perplexity AI is a copyright and trademark action filed by Britannica and Merriam-Webster in the Southern District of New York on September 10, 2025.[1]

September 2, 2026 discovery order

Magistrate Judge Sarah L. Cave partly granted the publishers’ request for additional retrieval-augmented generation (RAG) and user activity log (UAL) data. Perplexity must produce one additional RAG snapshot, with its date or period to be agreed through discussions, and host August 2025–January 2026 UAL data for inspection. The publishers must contribute $6,000 per month toward UAL hosting. The court balanced relevance against production burdens; this was a discovery ruling, not a determination of infringement.[2]

Conference and verification limits

An August 26 order scheduled a further discovery conference for September 8, 2026 at 4:30 p.m. Eastern. Its outcome has not been verified in the records reviewed.[3]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 S.D.N.Y., No. 1:25-cv-07546, docket entries reproduced by Justia, filing and assignment records
  2. ↑ 2.0 2.1 2.2 2.3 S.D.N.Y., ECF 114, discovery order (September 2, 2026), pp. 1, 6–13
  3. ↑ 3.0 3.1 S.D.N.Y., ECF 111, discovery order (August 26, 2026), pp. 1–4
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