Incident Tracker / United States (state)
Landberg v. City of New York
·Supreme Court of the State of New York, Appellate Division, Second Department·US-STATEFineprovisional
The New York Appellate Division, Second Department sanctions attorney Michael Sanders and Law Offices of Michael S. Lamonsoff, PLLC after an appellate brief used GenAI-assisted research. The court finds nonexistent cases, fictitious Court of Appeals quotations and misstatements, ordering $8,000 and $2,500 sanctions.
- Court
- Supreme Court of the State of New York, Appellate Division, Second Department
- Date
- 2026-06-23
- Who used the AI
- Lawyer
- AI tool
- Not identified in the record
- Conduct
- Attorney Michael Sanders submitted an appellate brief with three fabricated citations, fictitious Court of Appeals quotations, and misrepresentations of real cases after using an unspecified public AI-assisted research tool. The law firm was also sanctioned because its name appeared on the brief.
- Outcome
- Fine
- Penalty
- US$10,500
- Regulatory outcome
- No separate regulatory disposition recorded
- Status
- Provisional — written by the court-decisions pipeline, awaiting the editor
- Last checked
- 2026-09-07
Primary sources for this incident
Related regulation records for this incident
No related regulation record has been linked to this incident yet.
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Cite this record
SafeLegalAI Global Legal AI Incident Tracker, “Landberg v. City of New York”, safelegalai.com/tracker/landberg-v-city-of-new-york (accessed 2026-10-07). Data: CC BY 4.0.