LLMMedium
Attorney in Fletcher v. Experian Information Solutions, Inc. Reportedly Submitted Reply Brief with Purportedly AI-Generated Material Misrepresentations
- Occurred
- Dec 18, 2025
- Published
- Feb 18, 2026
- Source
- AI Incident Database
Summary
In Fletcher v. Experian Information Solutions, Inc., the Fifth Circuit found that attorney Heather Hersh had used generative AI to draft a substantial portion of a reply brief that contained fabricated legal support and factual representations. The court first issued a show-cause order and later imposed a $2,500 sanction, linking the filing errors to unverified AI-generated output.
Developers
- Large language model developers
Deployers
- Heather Hersh
Harmed parties
- United States Court of Appeals for the Fifth Circuit
- Judicial integrity
- James Fletcher
- Experian Information Solutions
- Epistemic integrity
Classification
Category confidence: 95%
Severity confidence: 90%
Rationale: Attorney sanctioned for using generative AI to fabricate legal citations and facts in court filings.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8