Your Lawyer's Brief Was Written by a Chatbot: What Happens to Your Appeal When AI Invents the Record

A state supreme court just removed a criminal defense lawyer from a murder appeal because the brief he filed cited witnesses who never existed and described testimony that was never given. He had been practicing more than forty years. He fed his client's trial transcripts into a chatbot, asked for a summary, and filed what came back. The court held him in contempt, ordered him to pay five thousand dollars to a client protection fund within thirty days, and referred him to the disciplinary board. His client was reassigned to a public defender and starts over.

The lawyer will survive this. The client lost a year. That asymmetry is the part nobody writes about.

A fabricated citation in an appellate brief is struck along with everything else in the filing. The sanction lands on the lawyer. The lost year lands on the client.

Key Takeaways

• A fabricated citation in your brief is your problem before it is your lawyer's problem, because the court strikes the filing, not the excuse.
• Florida now requires every filer to certify that cited legal authorities exist and are accurately cited, effective July 15, 2026.
• Miami-Dade and Broward issued circuit administrative orders in 2026 requiring disclosure of generative AI use in filings.
• Federal remedies for a fabricated brief run through Strickland, 28 U.S.C. Section 2255, and Federal Rule of Civil Procedure 11 sanctions practice.
• Post-conviction clocks do not pause because your lawyer made a mistake you did not know about.

What Actually Happened

Counsel loaded trial transcripts and court documents into a general-purpose chatbot and asked for a summary of the record. He assumed the output would be, in his word, bulletproof. The brief referenced nonexistent witnesses and attributed fictional testimony to at least one witness who had actually testified. Nobody caught it before it reached the state's highest court.

At the hearing, a justice asked whether he reads the news, because lawyers relying on AI hallucinations has been a front-page story for two years running. The court gave him two options and rejected both: either he chose to stay uninformed, or he gambled. He acknowledged his own stupidity on the record, and told the court he had already completed continuing legal education on AI use. That last detail should worry every defendant reading this. The CLE did not stop it.

Verification is not a training problem. It is a workflow problem, and the difference shows up in the filing.

The brief referenced witnesses who never existed and put fictional testimony in the mouth of a witness who did. Nobody caught it before it reached the state's highest court.

Florida Already Moved on This, and Most Defendants Have No Idea

This is not a New Mexico story. Florida has been out in front of it, and the rules changed this summer.

On May 28, 2026, the Florida Supreme Court amended the Rules of General Practice and Judicial Administration to require that anyone signing a document filed in a Florida court represents that the legal authorities cited in it exist and are accurately cited. The amendments took effect July 15, 2026, and courts were given express authority to impose whatever sanctions they consider appropriate for a filing that falls short. That is a certification requirement with teeth, and it reaches every criminal filing in every Florida courtroom.

The trial courts moved earlier. The chief judge of the Eleventh Judicial Circuit in Miami-Dade issued Administrative Order 26-04 in January 2026, requiring disclosure of generative artificial intelligence use by attorneys and self-represented litigants, and the Seventeenth Judicial Circuit in Broward followed. If your case is in Miami or Fort Lauderdale, those obligations already attached. On the federal side, a Magistrate Judge in the Middle District of Florida asked the Judiciary Committee in May 2026 to add the same certification to Federal Rule of Civil Procedure 11.

The ethics side has been settled longer than most lawyers admit. Florida Bar Ethics Opinion 24-1, issued in January 2024, permits generative AI in law practice but requires the lawyer to verify the accuracy and sufficiency of all research it produces. Failure to verify implicates the duty of competence under Rule 4-1.1, the bar on frivolous contentions under Rule 4-3.1, and candor to the tribunal.

Between the Florida certification rule, two South Florida administrative orders, and a Bar ethics opinion from January 2024, the standard of care question is not close.

What It Actually Costs You, Not Your Lawyer

The court strikes the filing. Whatever argument was in it, good or bad, is gone. If it was your opening brief on direct appeal, you lose the advantage of framing the issues first, and if a deadline ran while the court sorted out the mess, you end up arguing about excusable delay instead of your conviction.

The court's confidence in the whole filing collapses. A brief that invented two witnesses gets no charitable reading on its remaining points. Credibility is the only currency an appellate advocate has, and it is spent for the entire case.

New counsel starts from the record, not from the work. A replacement lawyer reads the transcripts fresh, identifies the preserved issues fresh, and rebuilds the argument. Months disappear, and if you are serving a sentence during the appeal, you serve it during the rebuild.

The sanctions do not compensate you. The contempt fine went to a client protection fund and the disciplinary referral protects future clients. Neither shortens the sentence of the person whose appeal was wrecked. That is the structural gap in how the profession polices this.

The Mistakes Defendants and Families Make Early

Assuming the brief is fine because a lawyer signed it. Under the amended Florida rule, that signature carries an express representation about the existence and accuracy of every authority cited. Ask whether it was verified. A competent lawyer will not be offended.

Not reading your own filings. Clients routinely never see the brief filed on their behalf. Read it. You do not need a law degree to notice that a witness described in your brief was not at your trial. On the record itself, you are the best fact-checker available.

Confronting the lawyer before documenting. Get the filing and the docket entry and preserve them before you make the call. A phone call produces no record. A file-stamped copy does.

Waiting to see how it plays out. Under 28 U.S.C. Section 2255 the federal one-year clock runs. Under Florida Rule of Criminal Procedure 3.850 the two-year clock runs. Neither pauses because your lawyer made a mistake you did not know about.

Assuming an ineffective assistance claim is automatic. Strickland v. Washington requires deficient performance and prejudice. A fabricated brief is deficient performance on any reading. Prejudice is the fight, and it turns on whether the real issues in your record would have changed the outcome.

What to Do If You Think Your Filing Was Fabricated

Pull the docket and the filing itself, from the clerk's portal in Florida state court or PACER in federal court. You want the document as filed, with the file stamp, not a draft your lawyer emailed you.

Check every citation against a real source. Federal statutes are free on Cornell's Legal Information Institute and published federal opinions are free on CourtListener. If a case in your brief does not appear anywhere, that is your answer. This costs nothing and takes an afternoon.

Get independent review before you accuse anyone. There is a real difference between a hallucinated case, a miscited case, and a case cited for a proposition it does not quite support. Only the first is fabrication.

Move for substitution promptly if the review confirms fabrication, and preserve the ineffective assistance claim in the right vehicle. Direct appeal is usually the wrong place, because the record on counsel's conduct is not developed. Post-conviction under Rule 3.850 in Florida or Section 2255 federally is where you build that record. The same preservation questions that govern any Florida appeal decide which vehicle carries the claim.

Do not accept that this is too new to litigate. Between the national sanctions record, the Florida certification rule, the two South Florida administrative orders, and a Florida Bar ethics opinion from January 2024, the standard of care question is not close.

"A federal criminal defense attorney should be able to tell you without hesitation how every authority in your filings gets verified. Ask before you retain."— Aaron M. Cohen, AMC Defense Law

Why the Timing Matters Right Now

Two clocks are running. The first is yours, and post-conviction deadlines do not care why you missed them. If a fabricated brief burned six months of your appellate window, the remaining window is the one you have.

The second is the rule's. Florida's certification requirement took effect July 15, 2026, so every filing after that date carries an express representation about the authorities cited in it. Filings before that date run through Rule 4-1.1 competence instead. If your filing straddles that line, the file stamp changes the analysis.

Anyone under federal investigation should read this as a warning about counsel selection. Pre-indictment defense work is where federal cases are shaped. If a lawyer outsources research to a chatbot without verifying it, assume the same habits govern the target letter response, the proffer, and the sentencing memorandum. A federal criminal defense attorney should be able to tell you without hesitation how every authority in your filings gets verified. Ask before you retain. The skills that separate careful AI use from reckless AI use are the ones to ask about.

Common Questions

Concerned About a Filing in Your Federal or Florida Criminal Case?

If a brief or motion filed in your case cites authorities that do not exist, or if you are under federal investigation and evaluating who should handle your defense, AMC Defense Law offers a confidential consultation. The firm handles federal investigation defense, pre-indictment representation, trial work, sentencing, and post-conviction matters in South Florida and nationwide. Every case is reviewed on its own record.

Verification is a workflow, not a disclaimer. Pull the filing, check every authority against a real source, and preserve the claim in the vehicle that can develop the record.

If you or your loved ones have been arrested or believe a filing in your case cites authorities that do not exist, call Aaron M. Cohen for a confidential consultation, 24 hours a day to get help.

This article is provided for general informational purposes only and does not constitute legal advice. Reading it does not create an attorney-client relationship with AMC Defense Law or any of its attorneys. Legal outcomes depend on the specific facts and procedural posture of each case. Anyone facing criminal charges or a criminal investigation should consult qualified counsel about their own situation.

About the author: Aaron M. Cohen is the founder of AMC Defense Law, a federal and state criminal defense firm based in Boca Raton, Florida. The firm represents clients in federal investigations and prosecutions involving healthcare fraud, white collar crime, financial crimes, and drug and firearms offenses, in Florida and nationwide.