CNN has filed a lawsuit against Perplexity, marking another significant clash between traditional news organizations and the AI search company that has drawn sharp criticism from publishers. The complaint, filed in federal court, accuses Perplexity of systematically copying and summarizing CNN’s content without permission, effectively building its business on the back of journalistic work while offering minimal value or credit in return. This legal action follows a pattern established by other major media outlets. The New York Times, Dow Jones, and Forbes have already pursued similar claims against the startup, which raised more than $250 million in funding and reached a valuation exceeding $3 billion. CNN’s decision to join the fray underscores growing frustration across the industry with how AI companies handle copyrighted material.…