Lee v. Law Society of Ontario, 2026 ONLSTH 136
·Law Society Tribunal (Ontario), Hearing Division·CASuspensionunverified
The Law Society Tribunal suspended Toronto lawyer Jisuh Lee's licence for six months and ordered CAD 10,000 in costs after she filed a factum containing AI-generated fictitious or irrelevant precedents in an estates case. It follows Mazaheri v. Law Society of Ontario (June 2026, CAD 31,150 costs) and is reported as Ontario's first licence suspension for AI misuse.
- Court
- Law Society Tribunal (Ontario), Hearing Division
- Date
- 2026-07-18
- Who used the AI
- Lawyer
- AI tool
- Not identified in the record
- Conduct
- Toronto lawyer Mary Hyun-Sook (Jisuh) Lee relied on a factum containing AI-generated nonexistent or irrelevant case law in a 2025 estates matter. The tribunal stressed her lack of understanding of the technology.
- Outcome
- Suspension
- Penalty
- CA$10,000
- Regulatory outcome
- Law Society of Ontario (Law Society Tribunal): Six-month licence suspension and CAD 10,000 costs for filing a factum containing AI-generated nonexistent or irrelevant case law. (2026-07-18)
- Status
- Unverified — pending primary-source confirmation
- Last checked
- 2026-09-03
Primary sources for this incident
Related regulation records for this incident
No related regulation record has been linked to this incident yet.
Cite this record
SafeLegalAI Global Legal AI Incident Tracker, “Lee v. Law Society of Ontario, 2026 ONLSTH 136”, safelegalai.com/tracker/lee-v-law-society-of-ontario (accessed 2026-09-04). Data: CC BY 4.0.