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US writers must disclose to OpenAI evidence of market harm, magistrate judge says

By Amy Miller ( August 15, 2025, 23:28 GMT | Insight) -- US writers accusing OpenAI of copyright infringement will have to disclose what information supports allegations that ChatGPT harms competition in the market for books, a US magistrate judge in New York said. OpenAI argued it's entitled to the information because writers have repeatedly argued that ChatGPT’s outputs dilute the market for their works by regurgitating or substituting them, and they need to demonstrate if they have concrete evidence to support their argument.US writers accusing OpenAI of copyright infringement will have to disclose what information supports allegations that ChatGPT harms competition in the market for books, a US magistrate judge in New York said today....

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