Introduction
On September 16, 2026, the Ninth Circuit held in Doe v. GitHub, Inc. that outputs produced by a generative AI coding tool are newly generated works, not copies of existing works, and therefore fall outside the Digital Millennium Copyright Act’s (DMCA) prohibition on removing or altering copyright management information (CMI).1 The court limited that characterization to the § 1202(b) removal and alteration analysis, and declined to reach whether AI outputs that reproduce copyrighted material could constitute copyright infringement.2 The ruling turned on the generative architecture of the accused AI systems, distinguishing generative AI tools that generate outputs by predicting sequences from statistical patterns from retrieval-based systems that retrieve and disseminate existing copyrighted material, with the court suggesting the latter could face different legal treatment. The Ninth Circuit also declined to reach, on procedural grounds, the question of whether training on copyright-protected materials from which CMI has been stripped violates § 1202(b).
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