コードの所有者は誰か？

01own_the_output.ts123doYouOwnTheOutput// verdict: noCode written entirely by an AI tool has no human author, so under U.S. copyright law it cannot be copyrighted, and you cannot own it.02vibe_coding.ts123vibeCodingRealExposure// the AI did the expressive workWhen you let the AI make the creative decisions, the code is not human-authored, and code that is not human-authored is not a protectable asset.03mixed_codebase.ts123mixedCodebases// you own only what you authorIn a codebase that mixes human and AI work, you own the parts a person meaningfully wrote. The AI-generated parts stay unprotected until a human reworks them.04open_source.ts123openSourceIsNotNoCopyright// a license needs an owner to grant itOpen source is not the same as no copyright. A license only holds if someone owns the code, so an open-source license placed on pure AI output has nothing to enforce.*|commit b7e1f04 Author: Supreme Court of the United States Date: Mar 2026Supreme Court denied cert in Thaler; human-authorship rule standsThe Court declined to review the D.C. Circuit's ruling, leaving the human authorship requirement as settled U.S. copyright law unless Congress acts.+ human authorship: settled law- purely AI-generated code: still not eligible*|commit a1f0b7c Author: Thaler v. Perlmutter Date: Mar 2025Works created entirely by AI are not eligible for copyrightThe court confirmed that only humans can hold copyright protection; a work generated wholly by a machine has no author the law will recognize.- machine-authored work: protected+ machine-authored work: not eligible*|commit 6d24e9a Author: Thomson Reuters v. Ross Date: Feb 2025First decision to reject a fair-use defense for AI trainingThe first ruling to reject a fair-use defense for using copyrighted material to train an AI, narrowing a shield many teams assumed they had.- training on copyrighted data: fair use+ training on copyrighted data: defense rejected* commit 0c3ab55 Author: U.S. Copyright Office report Date: Jan 2025Only meaningful human creative input is eligible for protectionThe Office stated that only portions of a work carrying meaningful human creative input are eligible for protection. The AI-generated remainder is not.+ human-authored portions: protected- AI-generated portions: unprotected