Courts across the United States are confronting a growing problem: AI-generated citations that simply do not exist.
Law firms face sanctions after AI‑produced errors
In a recent civil case in Mississippi, a federal judge imposed sanctions on four lawyers after discovering that both sides had relied on AI‑generated references that could not be verified. The judge cancelled the trial, levied monetary penalties and barred two of the lawyers from appearing before the U.S. District Court for the Northern District of Mississippi for two years. The filing contained fabricated case law, inaccurate quotations and non‑existent citations, illustrating how quickly a seemingly helpful tool can become a liability.
Examples of fabricated authority
One widely reported incident involved a brief that a firm submitted with “pervasive inaccurate, misleading, and fabricated…representations of legal authority.” In another matter, a lawyer was sanctioned after a filing included hallucinated material that the attorney had not checked. A third case saw an attorney admit he never verified the made‑up cases he cited. These situations point to a pattern of reliance on generative AI that can produce plausible‑looking but false legal references.
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Judicial response is tightening
Judges are treating AI hallucinations as a recurring issue, not a one‑off mistake. The message is clear: lawyers are accountable for everything they file, regardless of whether the content originated from a junior associate or an artificial‑intelligence program. Under Rule 3.3 of the Model Rules of Professional Conduct, attorneys must not present “a false statement of fact or law to a tribunal,” a duty that now collides with the ease of AI‑driven drafting.
Practical steps for attorneys
Practitioners are advised to follow three basic steps. First, check the individual judge’s rules regarding AI use. Second, independently verify every cited authority and quotation, even if an AI tool suggested it. Third, keep a record of that verification, especially if AI was involved in drafting or research. Maintaining such a log can help demonstrate compliance if a court later questions the authenticity of a citation.
When a filing contains hallucinated law, “Citation Not Found” becomes more than a technical glitch—it is a professional breach.
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Legal scholars note that the rise of AI in the courtroom mirrors earlier technological shifts, such as the adoption of electronic filing systems. A professor at Harvard Law School cautions that while AI can increase efficiency, the profession must adapt its ethical standards to address the new risk of fabricated authority, echoing the courts’ recent actions.
Guidance on the evolving role of lawyers can be found in the future of attorney discussion.
