Lacey v. State Farm General Insurance
C.D. California · May 6, 2025
- Jurisdiction
- federal
- Court
- C.D. California
- Record ID
- lacey-v-state-farm-general-insurance-2025-05-06
- Observed outcome
- Striking of supplemental briefs, denial of discovery relief, and imposition of $31,100 in monetary sanctions against two law firms.
- Known monetary consequence
- $31,100
Why this matter warrants attention
The court sanctioned two law firms $31,100 for filing briefs containing AI-generated hallucinations. The Special Master struck the briefs and denied discovery relief, finding that the firms failed to verify the accuracy of AI-assisted research, which resulted in the submission of nonexistent cases and fabricated quotations to the court.
The submission and re-submission of AI-generated material without verification, especially after warning signs were raised, was deemed reckless and improper. The court emphasized that undisclosed AI use that results in fabricated law undermines judicial integrity. While individual attorneys were spared, the firms were sanctioned for systemic failure in verification and supervision. The Special Master underscored that the materials nearly made it into a judicial order, calling that prospect “scary” and demanding “strong deterrence.”
Paid tools like CoCounsel and Westlaw AI are not a defense; require a second-attorney verification pass before any AI-assisted brief is filed.
Failure modes and consequences
- Fake Citations
- Fabricated Quotes
- Contract
- Trial
- Monetary
- AI attribution
- Admitted
- Recorded tool
- CoCounsel, Westlaw Precision, Google Gemini
- Known monetary consequence
- $31,100
- Procedural posture
- Special Master Order to Show Cause regarding sanctions following the submission of supplemental briefs containing hallucinated legal authority.
Damien Charlotin case archive
Publisher document archive. The recorded document is hosted in the upstream publisher archive.
Open underlying sourceA recorded source link is not a substitute for checking the underlying order, filing, opinion, or disciplinary record.
What this record does—and does not—establish
Counsel admitted to using CoCounsel, Westlaw AI, and Google Gemini.
The record summarizes the outcome described in the linked public source. The recorded document is hosted in the upstream publisher archive. This page is not a substitute for the complete docket, subsequent history, or jurisdiction-specific advice.
Latest evidence review: Primary Document Verified (high confidence).
Controls suggested by the public record
- Verify the existence, citation, court, and precedential status of every authority before filing.
- Compare every quoted passage and pincite directly with the underlying opinion or filing.
- Escalate unresolved verification failures before filing and preserve the responsible reviewer's signoff record.
- Apply the same source-checking controls to CoCounsel, Westlaw Precision, Google Gemini output as to any other research input.