Summary
Encyclopaedia Britannica, Inc. and Merriam-Webster, Inc. sued Perplexity AI, Inc. in the Southern District of New York, alleging Perplexity copied their copyrighted content from websites to train and operate its AI answer engine and falsely attributed AI-generated or hallucinated outputs to their brands.[1][2][3][4] The complaint asserts copyright infringement under 17 U.S.C. § 106 for scraping, input use, and substantially similar outputs in Perplexity's Retrieval Augmented Generation system, plus false designation of origin and trademark dilution under the Lanham Act, 15 U.S.C. § 1125; Perplexity moved to dismiss, arguing engineered prompts and unidentified works cannot support the claims.[3][4][7] Filed September 10, 2025, this is the 51st U.S. copyright lawsuit against an AI company an
Case details
- Court
- SDNY
- Docket number
- 1:25-cv-07546
- Filed
- Sep 10, 2025
- Status
- Active
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