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Anthropic CEO Dario Amodei. Photo: Ruhani Kaur/Bloomberg via Getty Images

Some of the world's largest music publishers filed a blockbuster lawsuit against Anthropic late Friday night, alleging "one of the largest and most blatant ongoing thefts of intellectual property in history."

Why it matters: The suit is the opening salvo in what is now likely to be a yearslong fight over music, AI, and how intellectual property is protected in a new era of technology.