A study using AI-text detectors found the share of court documents flagged as containing AI-generated writing soared from 1% in 2023 to 18% in 2026, according to MIT Technology Review. The soaring share of court documents flagged as containing AI-generated writing, from 1% in 2023 to 18% in 2026, signals a growing reliance on artificial intelligence within the legal sector, fundamentally changing how documents are prepared and submitted.
Yet, as AI content in legal documents surges, courts are tightening human authorship requirements and imposing sanctions for AI misuse. The Supreme Court released draft regulations in 2026, mandating disclosure of AI use in court filings, according to The Federal. The Florida Bar also amended rule 2.515(d)(2), empowering judges to sanction filings with fabricated or inaccurate AI-generated citations, according to floridabar.
This means courts will continue to prioritize human accountability and disclosure, guiding AI adoption in legal practice towards structured regulation rather than a free-for-all. This judicial commitment to human oversight is not new; the Copyright Office refused a copyright claim as early as August 12, 2019, citing a lack of necessary human authorship, according to constitutioncenter.
Courts Firmly Uphold Human Authorship Standard
The Supreme Court denied an appeal in Thaler v. Perlmutter on March 2, 2026, rejecting AI authorship claims, according to constitutioncenter. This confirmed AI cannot be recognized as a legal author. Similarly, the U.S. Court of Appeals for the District of Columbia upheld the Copyright Office's denial of a copyright claim for an AI-created picture, 'A Recent Entrance to Paradise', according to constitutioncenter.
The Supreme Court's denial of an appeal in Thaler v. Perlmutter and the U.S. Court of Appeals' upholding of the Copyright Office's denial for an AI-created picture underscore a fundamental legal principle: human intellect and creative contribution are essential for establishing authorship and securing legal rights in the age of AI. The consistent refusal of copyright for AI-only works since 2019, culminating in Supreme Court denials, established an early and firm legal precedent. This precedent asserts that AI lacks authorship, paving the way for broader judicial regulations on AI content in legal proceedings.
