LLMMedium
Citation Errors in Concord Music v. Anthropic Attributed to Claude AI Use by Defense Counsel
- Occurred
- May 15, 2025
- Published
- May 14, 2025
- Source
- AI Incident Database
Summary
In a legal filing in Universal Music Group et al. v. Anthropic, lawyers for Anthropic acknowledged that expert witness testimony submitted in the case contained erroneous citations generated by the company's Claude AI system. The filing stated that the inaccuracies, which included incorrect article titles and author names, were not caught during manual review. Anthropic characterized the issue as an honest mistake and apologized in court.
Developers
- Anthropic
Deployers
- Anthropic
Harmed parties
- Anthropic
- Judicial integrity
- Ivana Dukanovic
- Brittany N. Lovejoy
- Joseph R. Wetzel
- Andrew M. Gass
- Allison L. Stillman
- Sarang V. Damle
- Sara E. Sampoli
- Rachel S. Horn
- Latham & Watkins LLP
Tags
- Hallucination
- Large language model
- LLM
- Legal testimony
- Citation inaccuracy
- Apology
- Legal declaration
- California
- Anthropic
- Court filing error
- Verification failure
Classification
Category confidence: 95%
Severity confidence: 90%
Rationale: LLM hallucination caused citation errors in legal filing, acknowledged by company as honest mistake.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8