Generative AI, Fake Citations, and Attorney Sanctions: Quinteros v. Harbor Distributing
The Court of Appeal affirmed sanctions against a law firm for a filing containing nonexistent citations, fabricated quotations, and misstatements of controlling authority.
Need to Know
- California lawyers must personally verify that cited cases exist and that quotations and legal propositions are accurate before filing.
- Delegating drafting or cite-checking does not shift responsibility away from counsel of record.
- Challenges to the timing, safe harbor, or payee of sanctions can be forfeited if not raised in the trial court.
What Happened
Lipeles Law Group filed two substantially overlapping wage-and-hour class and PAGA actions against related defendants, first in Los Angeles County and later in San Francisco. When the defendants moved to stay the later-filed San Francisco action under exclusive concurrent jurisdiction, the firm opposed the stay.
The opposition brief caused the problem. The trial court found it contained non-existent citations, fabricated quotations, and serious misrepresentations of controlling authority. The court identified two case citations that did not exist and no fewer than eight fabricated quotations from cases cited by the firm.
The court issued an order to show cause and ultimately imposed $5,000 in sanctions payable to the defendants and $1,000 payable to the court. The firm and attorneys appealed.
What the Court Decided
The Court of Appeal affirmed. It rejected the firm's procedural arguments because the firm had not raised them below, including the arguments based on the safe harbor provision and the propriety of sanctions payable to the opposing party.
On the merits, the court held the sanctions were justified. The brief rested on a fake legal argument, inaccurate citations, fabricated quotations, and misstatements of authority. Apologies and lack of intent to mislead did not undo the problem.
The court emphasized that counsel of record is responsible for the accuracy and reliability of papers filed with the court. A lawyer cannot delegate that responsibility to a contract attorney, a citation checker, or a generative AI tool.
Why It Matters
Quinteros is not just an AI case. It is a court-filing responsibility case. The opinion makes clear that the basic duty to verify authority applies no matter how the draft was created.
For attorneys, the practical rule is simple: before filing, read the case, verify the citation, verify the quotation, and verify that the case actually supports the proposition. AI may speed up research or drafting, but it cannot be the lawyer of record.
ShortLegal Takeaway
Courts are treating fabricated AI-assisted legal authority as a serious professional failure. The safest practice is to treat every AI-provided citation as unverified until counsel personally confirms it against the actual source.
The Bottom Line
This decision is part of a fast-moving body of California employment law. The practical answer in any individual case will depend on the claims, documents, deadlines, procedural posture, and forum.
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