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California judge sanctions law firms for using AI to generate fake legal citations
Two law firms submitted a supplemental brief containing fake legal citations generated by AI systems including Google Gemini and Westlaw's CoCounsel. Judge Michael Wilner imposed $31,000 in sanctions after discovering the citations were fabricated. The lawyers admitted using AI without proper review or disclosure.
- Date it happened
- 2025-05-06
- Organisation involved
- K&L Gates
- Product, system or model
- Google Gemini, Westlaw Precision with CoCounsel
Where this came from
Attribution
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