The Ruling
The U.S. Second Circuit Court of Appeals issued a precedent-setting ruling requiring all attorneys practicing in federal courts within the circuit to disclose when AI tools were used in preparing legal briefs, motions, and other filings. The ruling came after a series of cases where AI-hallucinated citations went undetected.
Key Requirements
- Mandatory disclosure statement when AI tools are used in legal research or drafting
- Independent verification of every case citation, statute, and regulatory reference
- Attorneys remain personally liable for accuracy regardless of AI assistance
- Sanctions including fines and potential suspension for submitting AI-hallucinated citations
Context
The ruling follows at least 15 documented cases in 2025-2026 where attorneys submitted AI-generated briefs containing fabricated case citations. The most notable involved a personal injury attorney who filed a motion citing six non-existent cases generated by ChatGPT, resulting in a $10,000 fine and mandatory CLE on AI ethics.
Bar Association Response
The ABA issued updated Model Rules commentary endorsing the ruling's framework. State bars in California, New York, and Texas announced they would adopt similar requirements. Legal malpractice insurers began requiring AI usage policies as a condition of coverage.