By Mike Swift ( September 16, 2026, 20:56 GMT | Insight) -- A US appeals court found Microsoft, GitHub, and OpenAI did not violate the Digital Millennium Copyright Act by omitting copyright-management information in Copilot and Codex outputs because the tools create new works rather than remove or change attribution from existing ones. The decision by the US Court of Appeals for the Ninth Circuit may undermine similar AI-training lawsuits, and had immediate ramifications for other AI training cases, including one suit against Roblox, although the plaintiffs’ contract claims against Microsoft and OpenAI remain intact.Microsoft and OpenAI did not violate a key US copyright law by removing copyright management information from their code when developing AI software coding tools Copilot and Codex, a federal appeals court said Wednesday in a decision already reverberating through other US litigation over how tech companies train their AI....
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