One AI Brief, One Fine, One Bar Referral

A California appeals court just ruled that lawyers who let a paralegal check AI-generated citations are breaking the law — and one attorney is now facing sanctions and a State Bar referral to prove it.

Story Snapshot

A California appeals court sanctioned attorney Carlton Floyd $1,500 and referred him to the State Bar for submitting briefs with fake AI-generated case quotes.
The court ruled that having a paralegal check citations is not enough — the lawyer who signs the brief must personally read every case cited.
The ruling is published, which means it now sets binding rules for every trial court in California.
Courts across the country have fined lawyers between $1,000 and $31,000 for AI citation errors, showing this is a growing national problem.

What the Court Actually Said

On July 10, 2026, California’s First Appellate District issued its ruling in Del Biaggio v. Bansen. The court found that attorney Carlton Floyd submitted legal briefs containing fabricated quotes — quotes that AI software invented and attached to real court cases. Floyd’s defense was that he had a plan: a paralegal would check the citations. The court rejected that argument directly, stating that his plan “did not satisfy his own duty to read the cases he cited” and was “inappropriate even if it had not gone awry.”

The court went further, stating plainly: “The lawyer who signs the brief reads the cases, not a delegate working from a checklist.” That single sentence shuts the door on any workflow where a paralegal handles citation review while the signing attorney skips reading the source material. Because the ruling was certified for publication, it now binds every California trial court statewide — not just the parties in this one case.

This Is Not an Isolated Case

Floyd’s case fits a pattern that has been building for two years. Courts nationwide have sanctioned lawyers for submitting AI-generated briefs filled with fake citations. Fines have ranged from $1,500 to $31,100. In California alone, one attorney was fined $10,000 for filing an appeal packed with fake quotes generated by ChatGPT. Another faced State Bar discipline after citing cases that simply do not exist. Judges are no longer treating these errors as honest mistakes — they are treating them as professional negligence.

Artificial intelligence tools can produce four types of citation errors: cases that never existed, real cases cited for the wrong reason, fake quotes from real cases, and mixed-up cases that blend multiple rulings into one. All four have shown up in court filings. The Del Biaggio ruling was published specifically “as a warning,” according to court documents — a signal that judges want lawyers to understand the stakes before they hit send.

What the Rules Now Require

The California State Bar’s guidance on AI use in law is clear. It states that “a lawyer must review all outputs produced using AI tools for accuracy, including but not limited to analysis and citations to authority before submission to the court.” That duty belongs to the lawyer — not the software, not the paralegal, not an internal checklist. A prior 2025 California appeals ruling, Noland v. Land of the Free, L.P., had already established that reading cited authorities is a “fundamental duty of attorneys.” Del Biaggio builds on that foundation and extends it directly to AI-generated content.

In Del Biaggio v. Bansen, a California appeals court found counsel's AI-verification plan inadequate: a paralegal citation check could not replace a lawyer's review of legal authority. For Tennessee lawyers, supervision must include personal verification before filing.

— Judicial AI Standard (@JudicialAiStd) July 14, 2026

There is a real-world cost to this standard. Large law firms that rely on paralegal teams to handle research and citation work now face higher compliance costs. Solo practitioners who already review everything themselves feel little change. Some legal technology tools do offer automated verification — flagging citations with color-coded alerts — but courts have not yet ruled that software checks alone satisfy a lawyer’s personal duty. Until they do, the message from California courts is simple: if your name is on the brief, you read the cases. No exceptions.