Quinteros v. Harbor Distributing, LLC
CA California (1d) · Jun 11, 2026
- Jurisdiction
- state
- Court
- CA California (1d)
- Record ID
- quinteros-v-harbor-distributing-llc-2026-06-11
- Observed outcome
- The court affirmed the trial court's order imposing $6,000 in monetary sanctions, jointly and severally, against the law firm and its attorneys.
- Known monetary consequence
- $6,000
Why this matter warrants attention
The court imposed $6,000 in monetary sanctions ($5,000 to defendants and $1,000 to the court) against the law firm and its attorneys for submitting a brief containing fabricated case law and AI-generated hallucinations, finding the firm failed its non-delegable duty to verify the accuracy of its filings.
The court reasoned that attorneys have a non-delegable duty to personally read and verify every citation and quotation in their filings. It held that relying on generative AI or contract attorneys without independent verification constitutes an abuse of the adversary system and a violation of professional obligations under the Business and Professions Code and Rules of Professional Conduct.
This case reinforces that law firms cannot delegate the duty of citation verification to contract attorneys or AI tools. It establishes that firms are strictly liable for the accuracy of their filings, regardless of the source of the research or the drafting process.
Failure modes and consequences
- Fake Citations
- Fabricated Quotes
- Misrepresented Authority
- Bar Referral
- Employment
- Appellate
- AI attribution
- Implied
- Recorded tool
- Generative AI (unspecified)
- Known monetary consequence
- $6,000
- Procedural posture
- The trial court issued an Order to Show Cause (OSC) regarding sanctions, which resulted in a monetary sanction order. The law firm appealed the order to the California Court of Appeal, which affirmed the trial court's decision.
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
The court referenced the use of generative AI tools such as ChatGPT.
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.
- Confirm that each authority supports the stated proposition and has not been mischaracterized.
- Escalate unresolved verification failures before filing and preserve the responsible reviewer's signoff record.