A California Court of Appeal sanctioned an attorney $1,500 and forwarded its opinion to the State Bar after his brief quoted cases that do not exist, quotations generated by AI and never verified. The lawyer had an AI policy requiring human review. The court held the policy itself was not enough, because it never put a competent person on the …
Generative AI Wrote the Brief, and the Lawyers Who Signed It Paid the Price
If your business relies on generative AI to produce work that gets filed, sent, or signed under your name, a California appellate court just answered the question that matters: when the output is wrong, who pays? Not the software. Not the contractor who ran it. You. That’s the lesson of Quinteros v. Harbor Distributing, LLC (Cal. Ct. App., 1st Dist., …
AI Hallucinations in California Courts:
The Rules Now Apply to Everyone Horst Legal Counsel | March 2026 If you have been following California’s growing body of appellate authority on AI-generated legal citations, you have watched the courts build a wall, one published opinion at a time. First came the warnings to attorneys. Then came the sanctions. Then, in Torres Campos v. Munoz, the consequences reached …
Lessons from Torres Campos v. Munoz:
Court of Appeal Affirms Pet Custody Order, Despite Trial Judge’s Reliance on AI-Hallucinated Case Citations Horst Legal Counsel | March 2026 Reviewing a judicial order that analyzed parties’ respective rights under AI-hallucinated case law cited and “interpreted” extensively by the parties, the Court of Appeal in Torres Campos v. Munoz felt compelled to publish its opinion in order to send …



