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Encyclopedia Britannica Sues OpenAI for Copyright & Trademark Infringement

11 de julio de 2026Pablo Navarro1 min

OpenAI faces another significant legal challenge, this time from Encyclopedia Britannica, which has initiated a lawsuit alleging extensive copyright and trademark infringement. Britannica claims that OpenAI unlawfully utilized its copyrighted content on a massive scale to train its artificial intelligence models. Furthermore, the venerable encyclopedia publisher asserts that ChatGPT's responses to user queries sometimes include complete or partial verbatim reproductions of its proprietary articles.

Beyond the claims of copyright violations, Britannica's legal complaint also highlights trademark infringement. The lawsuit details that ChatGPT has a tendency to generate "made-up content" or "hallucinations," which it then falsely attributes to Encyclopedia Britannica, potentially misleading users. While the precise amount of monetary damages sought is not disclosed, Britannica is also requesting a court injunction to prevent OpenAI from continuing these alleged practices.

In response to these allegations, an OpenAI spokesperson commented that their models are designed to enhance human creativity, advance scientific discovery and medical research, and improve daily lives for millions of people. They emphasized that their AI is trained on publicly available data and operates under the principles of fair use.

This is not Britannica's first foray into AI-related litigation; the company, which also owns Merriam-Webster, previously initiated similar legal action against Perplexity in September. Concurrently, OpenAI is still embroiled in a separate, ongoing legal dispute with The New York Times, which has also accused the AI company of copyright infringement.