LLMHigh
Factum in Ko v. Li Allegedly Contains AI-Generated Case Law Citations
- Occurred
- Apr 25, 2025
- Published
- May 14, 2025
- Source
- AI Incident Database
Summary
In Ko v. Li, 2025 ONSC 2766, the Ontario Superior Court of Justice identified multiple inaccurate or nonexistent case citations in a factum submitted by counsel for the applicant. Justice FL Myers questioned whether generative AI was used in drafting the document, noting the cited cases were either irrelevant, misrepresented, or did not exist. The court ordered the lawyer to show cause why she should not be cited for contempt, citing duties of accuracy and technological competence.
Developers
- Large language model developers
Deployers
- Jisuh Lee
Harmed parties
- Hanna Ko
- Jisuh Lee
- Ontario Superior Court of Justice
- Judicial integrity
Tags
- large language model
- LLM
- hallucination
- hallucinated legal citation
- legal brief error
- legal drafting
- professional misconduct risk
- AI use in court proceedings
- Canadian legal system
- lawyer disciplinary action
- court integrity
- Canada
Classification
Category confidence: 95%
Severity confidence: 90%
Rationale: Generative AI hallucinated case law citations leading to contempt charges and court sanctions.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8