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Generative AI is now embedded in legal research and drafting, but its rapid adoption has led to unintended and increasingly serious consequences for courts: a growing volume of hallucinated cases, quotations, and legal authorities appearing in filed pleadings. Sanctions, judicial warnings, and more than 300 AI-specific standing orders have failed to stop this trend.
To the contrary, the number of documented instances in which lawyers have submitted fabricated authorities has continued to climb, now exceeding 716 reported cases. That persistence signals a structural failure in existing deterrents and calls for a more systemic response. One such solution is straightforward and immediately implementable: courts should require all electronic filings to include hyperlinked citations to authoritative legal sources, ensuring that cited law exists and can be verified at the point of filing.
Hallucinated citations are not harmless mistakes. Each fabricated authority forces judges, clerks, and opposing counsel to expend time and resources determining their veracity and issuing orders. This diverts limited judicial resources away from meritorious disputes, delays proceedings, and undermines confidence in the legal profession.
Courts have addressed this issue primarily through standing orders requiring disclosure or certification of GenAI use. One of the earliest orders was issued by U.S. District Court Judge Brantley Starr of the Northern District of Texas, who required attorneys and litigants to certify either that no portion of a filing was drafted using GenAI or that any AI-generated content was independently verified using traditional legal research databases.
Since then, at least 300 judges have adopted similar standing orders or local rules, though with varying requirements. Some orders focus on transparency, requiring parties to disclose when GenAI is used for legal research or drafting and to identify the tools used. Others require disclosure of AI use coupled with a certification that every citation has been verified.
Despite the proliferation of these orders, the number of hallucination-filled filings has increased dramatically over the past two years. From a practical and doctrinal standpoint, this outcome is unsurprising.
AI-specific disclosure and certification orders are simply redundant of Rule 11 of the Federal Rules of Civil Procedure, which already obligates attorneys, by signing and filing a document, to certify that legal contentions are warranted by existing law and that factual assertions have evidentiary support after reasonable inquiry. Rule 11 applies to fake citations, irrespective of whether research is conducted by a human, AI, or some combination of both.
Some courts have explicitly recognized this redundancy. The Fifth Circuit Court of Appeals, for example, has declined to adopt AI-specific standing orders on the ground that invoking AI use does not excuse conduct that is otherwise sanctionable under existing appellate rules.
Indeed, AI certification requirements create a new formality without tangible, operational enforcement. They change paperwork, not practice. Although they require attorneys to attest after the fact, they do not impose an affirmative, front-end obligation to verify that cited authorities exist.
What is needed is a practical procedural safeguard that imposes an affirmative, front-end verification obligation on attorneys, rather than another layer of boilerplate certification.
That safeguard is the “Hyperlink Rule,” which should be a requirement that litigants hyperlink their legal citations and contentions to authoritative sources. Requiring hyperlinked citations to authoritative sources would directly address the most common error: citations to nonexistent law.
Under the Hyperlink Rule, every cited judicial opinion, statute, or regulation would be hyperlinked to a reputable legal database or official government repository, such as Westlaw, Lexis, Bloomberg Law, or an official court or agency website.
This approach offers several advantages. First, it forces verification at the point of citation. A hallucinated case cannot be hyperlinked because it does not exist in authoritative databases. The act of attempting to identify and add a hyperlink exposes the error to counsel before the document is filed.
Second, hyperlinking materially reduces the burden on judges and clerks reviewing filings. When citations are hyperlinked, courts can assess cited authorities by direct reference rather than by copying and independently searching questionable citations across numerous databases. This conserves judicial resources.
Third, hyperlinking deters careless reliance on AI output without prohibiting the use of AI altogether. Attorneys remain free to use GenAI tools for research and drafting, but the requirement ensures that any AI-assisted output is anchored in real, verifiable law. This stands in contrast to more restrictive approaches, including rules like those of U.S. District Court Judge Sharon Coleman of the Northern District of Illinois, which provide that parties may not use AI to draft memoranda or to support legal authority.
The Hyperlink Rule is self-executing, technologically neutral, and imposes minimal burden on counsel, while materially conserving judicial resources. It converts existing Rule 11 obligations from a back-end enforcement mechanism into a front-end control that prevents nonexistent authorities from reaching the docket.
A purported objection to this Hyperlink Rule is that it imposes an additional burden on litigants. But that concern is overstated. Verifying cited authorities is already a routine part of legal practice and a professional obligation. Hyperlinking does not create a new duty; it merely formalizes an existing one.
Nor is the requirement unprecedented. In 2020, well before the advent of widespread GenAI use, the New York Commercial Division adopted Administrative Order AO/133/20, which mandates hyperlinking to NYSCEF docket entries in electronically filed documents. That Order further authorizes courts to require hyperlinks to “court decisions, statutes, rules, regulations, treatises, and other legal authorities” hosted in legal research databases or official government websites.
And even when a court does not require it, “parties are nonetheless encouraged to hyperlink such citations unless otherwise directed by the Court.” The Order demonstrates that hyperlinking requirements are feasible and administrable.
Courts could adopt a Hyperlink Rule as follows:
Model Hyperlink Rule
(a) Hyperlink Requirement. Except as provided in subsection (d), all electronically filed pleadings, motions, memoranda of law, and briefs must include a functional hyperlink for each citation to a court decision, statute, rule, regulation, or other legal authority. Hyperlinks must direct the reader to either (i) an official government source or (ii) a widely used and reputable legal research database reasonably accessible to the Court. Counsel remain solely responsible for the accuracy, relevance, and fair characterization of all cited authorities.
(b) Form and Effect of Hyperlinks. For purposes of this Rule, a “hyperlink” means an electronic link embedded in a citation that allows direct access to the cited authority. The inclusion of a hyperlink does not incorporate the linked material into the record. All authorities must be cited in standard citation form regardless of whether a hyperlink is provided.
(c) Functionality at Time of Filing. Hyperlinks must be functional at the time of filing. A filing shall not be deemed noncompliant solely because a hyperlink later becomes inactive, inaccessible, or altered due to circumstances outside counsel’s control.
(d) Exceptions. This Rule does not apply where:
- The filing is submitted by a pro se litigant, unless otherwise ordered by the Court.
- A party certifies in good faith that a cited authority is not reasonably available in electronic form.
- A party certifies in good faith that technical limitations of the Court’s electronic filing system make compliance impracticable.
- A party certifies in good faith that compliance with this Rule would impose an undue burden due to limitations in the party’s office technology or other good cause.
Upon such certification, the Court may excuse the party from any otherwise applicable hyperlinking requirement. In circumstances covered by this subsection, the party shall cite the authority in standard citation form without hyperlinking.
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It is true that the Hyperlink Rule will not eliminate all forms of AI-related error. Lawyers may still mischaracterize valid authorities or selectively quote precedent, but that has always been a problem in court filings, even before the GenAI boom. Still, the Hyperlink Rule could eliminate the most common category of defect: citations to nonexistent law.
GenAI is now a permanent technology embedded in legal practice, but the rise of hallucinated citations mandates a new solution. Courts need a new mechanism that prevents errors before they reach the docket. The Hyperlink Rule is a modest, workable reform that reinforces existing ethical duties, conserves judicial resources, and allows the continued use of a generation-defining technology.
