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Courts on AI / monthly digest

What courts said about AI in September 2026

2 court-authored documents filed this month that substantively discuss generative AI. Fabricated or misquoted citations 1 · Self-represented litigants using AI 1.

compiled by the Cognesio LLP editorial teammethodas of 2026-09-07v0.1.1coding CC BY 4.0JSON Hugging Face GitHub

← August 2026

  1. Douglas v. Deutsche Bank National Trust Company

    · District of Columbia Court of Appeals · Fabricated or misquoted citations

    The District of Columbia Court of Appeals strikes Deutsche Bank’s appellee brief after counsel admits that four cited authorities generated through Google’s AI search did not exist. The court also refers the matter to disciplinary counsel and stresses that signed appellate briefs require verified authorities.

  2. In re the Marriage of Monson

    · Iowa Court of Appeals · Self-represented litigants using AI

    The Iowa Court of Appeals identifies likely AI misuse in a self-represented divorce appellant’s brief, including nonexistent and mischaracterized authorities. The court still considers discernible claims, affirms the decree, and warns that inaccurate AI-assisted filings waste resources.