This database tracks legal decisions1
I.e., all documents where the use of AI, whether established or merely alleged, is addressed in more than a passing reference by the court or tribunal.
Notably, this does not cover mere allegations of hallucinations, but only cases where the court or tribunal has explicitly found (or implied) that a party relied on hallucinated content or material.
As an exception, the database also covers some judicial decisions where AI use was alleged but not confirmed. This is a judgment call on my part.
in cases where generative AI produced hallucinated content – typically fake citations, but also other types of AI-generated arguments. It does not track the (necessarily wider) universe of all fake citations or use of AI in court filings.
While seeking to be exhaustive (831 cases identified so far), it is a work in progress and will expand as new examples emerge. This database has been featured in news media, and indeed in several decisions dealing with hallucinated material.2
Examples of media coverage include:
- M. Hiltzik, AI 'hallucinations' are a growing problem for the legal profession (LA Times, 22 May 2025)
- E. Volokh, "AI Hallucination Cases," from Courts All Over the World (Volokh Conspiracy, 18 May 2025)
- J-.M. Manach, "Il génère des plaidoiries par IA, et en recense 160 ayant « halluciné » depuis 2023" (Next, 1 July 2025)
- J. Koebler & J. Roscoe, "18 Lawyers Caught Using AI Explain Why They Did It (404 Media, 30 September 2025)
Based on this database, I have developped an automated reference checker that also detects hallucinations: PelAIkan. Check the Reports
in the database for examples, and reach out to me for a demo !
For weekly takes on cases like these, and what they mean for legal practice, subscribe to Artificial Authority.
| Case | Court / Jurisdiction | Date ▼ | Party Using AI | AI Tool ⓘ | Nature of Hallucination | Outcome / Sanction | Monetary Penalty | Details | Report(s) |
|---|---|---|---|---|---|---|---|---|---|
| Ren v. Area 09 | BCPAAB (Canada) | 7 October 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(2)
Misrepresented
Doctrinal Work
(1)
|
Breach of Board's Code of Conduct | 910 CAD | — | |
|
(Monetary sanction decided in later determination, available here.) |
|||||||||
| In the Matter of Stephen C. | CBCA (USA) | 7 October 2025 | Pro Se Litigant | Unidentified |
Fabricated
Legal Norm
(1)
|
Claim denied; reimbursement of moving costs denied. | — | — | |
|
Claimant cited several inapplicable regulations to support reimbursement. When directed to supply the texts, claimant admitted he had used artificial intelligence to create his submission and withdrew reliance on the cited regulations except for JTR 053710. The Board denied the claim. |
|||||||||
|
Source: David Timm
|
|||||||||
| Delisle v. Canadian Association of Professional Employees | FPSLREB (Canada) | 3 October 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
Misrepresented
Case Law
(1)
|
— | — | ||
| NewRez LLC v. Morton | SC New York (USA) | 2 October 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
No sanction | — | — | |
| Backhaus v. Area 01 | BC Property Assessment Appeal Board (Canada) | 2 October 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(2)
|
Warning | — | — | |
|
The appellant cited two reported decisions which the Board could not locate and concluded likely do not exist and may have been generated with AI; the Board excluded those authorities from evidence and cautioned the appellant about nondisclosure of AI per the Board's Code of Conduct. |
|||||||||
| Specter Aviation Limited v. Laprade | CS Québec (Canada) | 1 October 2025 | Pro Se Litigant | Unidentified |
Fabricated
Case Law
(1)
|
Monetary sanction for procedural misconduct | 5000 CAD | — | |
|
Monsieur Laprade filed a contestation containing multiple citations to non-existent authorities generated with the assistance of artificial intelligence. The Court found these to be fabricated (so-called "hallucinated") citations, constituting a manquement important to the conduct of the proceeding under art. 342 C.p.c., and imposed a 5,000$ sanction. |
|||||||||
| Gavin B. Davis v. Chief Officer Gina Faubion, et al. | W.D. Texas (USA) | 1 October 2025 | Pro Se Litigant | Unidentified |
Misrepresented
Case Law
(1),
Doctrinal Work
(1),
Legal Norm
(1)
|
Court accepted the R&R, dismissed the action with prejudice under 28 U.S.C. § 1915(e), and denied leave to amend. | — | — | |
| Fernando Oliveira v Ryanair DAC | Workplace Relations Commission (Ireland) | 1 October 2025 | Pro Se Litigant | Unidentified |
Fabricated
Case Law
(2)
Misrepresented
Case Law
(7)
|
Conduct described as abuse of process | — | — | |
|
The Adjudication Officer found the complainant's submissions contained multiple inaccurate and non‑existent legal citations. The Respondent had flagged AI‑generated drafting and numerous phantom or misquoted determinations; the Officer concluded the complainant failed to establish a prima facie case and that the submissions contained egregious and misleading citations. |
|||||||||
| Jackson v. United States DHS | D. Nevada (USA) | 1 October 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
False Quotes
Case Law
(1)
Misrepresented
Case Law
(1)
|
Warning | — | — | |
| Hogan v. Treasury Board | Federal PSLREB (Canada) | 1 October 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(4),
Doctrinal Work
(1)
False Quotes
Legal Norm
(1)
Misrepresented
Case Law
(3)
Outdated Advice
Repealed Law
(1)
|
— | — | ||
| Tomlin v. State of New Mexico | D. New Mexico (USA) | 30 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
Warning | — | — | |
| In re the Marriage of D.X. and S.P. | CA California (USA) | 30 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(7)
|
Warning | — | — | |
|
The appellate opinion and editor's note identify numerous incorrect or non-existent case citations in the appellant's filings. The court treated those citations as unreliable, found several to be fictitious or unlocatable, and declined to credit them in resolving the appeals. |
|||||||||
| In re: Todd Elliott Koger | W.D. Pennsylvania (Bankruptcy) (USA) | 30 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
One-year filing bar. | — | — | |
|
The Court observed that several authorities cited in the Kogers' pro se filings do not exist and appeared to be fabricated (noting possible use of AI), warned of Rule 9011 implications, and treated the filings as part of an abusive litigation strategy warranting dismissal and a one-year filing bar. |
|||||||||
| Mitchell Taylor Button & Dusty Button v. Juliet Doherty et al. | S.D. New York (USA) | 30 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
False Quotes
Case Law
(2)
Misrepresented
Exhibits or Submissions
(1)
|
Certification requirement for future AI-assisted filings. | — | — | |
| Munoz v. Lopez | CA California (USA) | 29 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
Warning | — | — | |
| Chapter Kris Jackson v. BOK Financial Corporation, et al. (2) | N.D. Oklahoma (USA) | 29 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(5)
False Quotes
Case Law
(1)
|
Show Cause Order | — | — | |
| Jade Riley Burch v. HCA Healthcare | D. Nevada (USA) | 26 September 2025 | Pro Se Litigant | Unidentified |
Fabricated
Case Law
(1)
Misrepresented
Case Law
(1)
|
Warning | — | — | |
| Oready, LLC (2) | GAO (USA) | 25 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(4)
Misrepresented
Case Law
(1)
|
Protests dismissed for abuse | — | — | |
|
Actually the fourth order in that case that pertains to hallucinations; a first, June 5 Order is only mentioned in a second, June 18 order that does not call out what appears to be hallucinated references. |
|||||||||
|
Source: David Timm
|
|||||||||
| Evans, et al. v. Robertson et al. (2) | E.D. Michigan (USA) | 25 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(3)
False Quotes
Case Law
(3)
|
Warning to both parties | — | — | |
|
Source: Volokh
|
|||||||||
| Eric Andrew Perez v. Dr. Neil C. Evans, et al. | S.D. New York (USA) | 25 September 2025 | Pro Se Litigant | ChatGPT |
Fabricated
Case Law
(1)
Misrepresented
Case Law
(1)
|
Warning | — | — | |
|
Source: Jesse Schaefer
|
|||||||||
| BFG aka Byline Financial v. Pierce RE Holdings & Brewster | N.D. Illinois (USA) | 24 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
Warning | — | — | |
| Melinda L'Shay Johnson v. MINI of Las Vegas | D. Nevada (USA) | 24 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
Warning | — | — | |
| T.M. v. M.M. | CA Indiana (USA) | 24 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(5)
False Quotes
Case Law
(1)
Misrepresented
Exhibits or Submissions
(1),
Legal Norm
(1)
|
Warning | — | — | |
|
The Court preserved the invalid citations in the opinion as they are part of the record, admonished that fabricated or incorrect citations frustrate review and may lead to reprimand or sanction. |
|||||||||
| Salem v. Deputy Head | Federal PSLREB (Canada) | 24 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(4)
Misrepresented
Case Law
(1)
|
— | — | ||
| Stile Carpentry Ltd. v. 2004424 Ontario | CA Ontario (Canada) | 23 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1),
Exhibits or Submissions
(1),
Legal Norm
(1)
False Quotes
Case Law
(1)
Misrepresented
Case Law
(1)
|
— | — | ||
| In re Molina | E.D. New York (Bankruptcy) (USA) | 22 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(4)
|
Order to sworn accuracy of citations | — | — | |
| Martin v. Redstone Federal Credit Union | N.D Alabama (USA) | 19 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(8)
|
Warning | — | — | |
| Ali v. IT People Corporation | E.D. Michigan (USA) | 19 September 2025 | Pro Se Litigant | Implied |
Fabricated
Legal Norm
(1)
False Quotes
Case Law
(1)
Misrepresented
Legal Norm
(1)
|
Monetary Sanction | 600 USD | — | |
| United States v. Malik | D. Maryland (USA) | 19 September 2025 | Pro Se Litigant | Implied |
Fabricated
Legal Norm
(1)
False Quotes
Doctrinal Work
(1)
|
Warning | — | — | |
|
Source: Jesse Schaefer
|
|||||||||
| Cingel v. Ferreri | CA Indiana (USA) | 19 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(2),
Legal Norm
(3)
Misrepresented
Case Law
(1),
Legal Norm
(2)
|
Warning | — | — | |
| Eric V. Mitchel II v. Stellantis Financial Services | E.D. Virginia (USA) | 18 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(3)
|
Warning | — | — | |
|
"The Court respectfully proposes that the time may be near for an exception to the Erickson liberal-construction rule, where a pro se individual relies on AI to draft pleadings and thus blurs the line between what is a good faith pro se assertion of an actionable claim and what is a computer-generated morass that only serves to waste court time and resources." |
|||||||||
|
Source: Jesse Schaefer
|
|||||||||
| Hugo v Affinity Education Group Pty Ltd | Family Court (Australia) | 18 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
Warning | — | — | |
| Tsupko v. Kinetic Advantage, LLC | S.D. Indiana (USA) | 17 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(2)
Misrepresented
other
(1)
|
Admonishment and Warning | — | — | |
|
Source: Robert Freund
|
|||||||||
| Jeramiah Brown v. Fat Dough Incorp., doing business as Dominos Pizza | N.D. New York (USA) | 17 September 2025 | Pro Se Litigant | ChatGPT |
Fabricated
Case Law
(1)
|
Warning | — | — | |
| Latasha Hill v. Auto Club Family Insurance Company | S.D. Mississippi (USA) | 17 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(3)
Misrepresented
Case Law
(2)
|
Warning | — | — | |
|
Source: Jesse Schaefer
|
|||||||||
| Santree v. Eveangel Hines | CA North Carolina (USA) | 17 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
Misrepresented
Case Law
(1)
|
Appeal dismissed for lack of genuine argument | — | — | |
|
Defendant's reply brief contained citations that did not support her arguments and included at least one non-existent case citation; the court concluded these errors suggest use of AI and treated the issues as abandonment under Rule 28(b)(6), dismissing the appeal. |
|||||||||
|
Source: Jesse Schaefer
|
|||||||||
| Howe v. NSW Department of Education | NSW Industrial Relations Commission (Australia) | 17 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
Misrepresented
Case Law
(2)
|
— | — | ||
| BKA Holdings v. Sam | CA Illinois (USA) | 16 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(4)
|
Plaintiff awarded attorney fees and costs for spotting hallucinated authority | 1 USD | — | |
| Fagan v. Barnhiser, Nanologix, et al. | D. New Jersey (USA) | 16 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(2)
|
Warning | — | — | |
| Ezenwa Ebem v. Bondi et al. | N.D. Texas (USA) | 15 September 2025 | Pro Se Litigant | Implied |
Fabricated
Exhibits or Submissions
(1)
Misrepresented
Exhibits or Submissions
(1)
|
Warning | — | — | |
|
The court found the plaintiff's filings contained misrepresentations of the record—specifically, a purported 'Clerk's Entry of Default' that never existed and a claim that an Immigration Judge made a final binding APA finding. The court attributed these misrepresentations to likely AI generation, warned the plaintiff about consequences for false statements, and construed the misrepresentations as AI misapplication rather than deliberate deception. |
|||||||||
| Nga Huynh v. Joseph Desimone | CA California (USA) | 15 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(2)
|
Warning | — | — | |
|
The appellant (self-represented) cited two nonexistent cases in her appellate brief. The respondent flagged the fictitious citations and requested sanctions. The court found the citations fictitious, discussed sanction authority and AI-generated filings, but declined to impose sanctions because the request was procedurally inappropriate, the appellant corrected filings promptly, and the legal propositions were, in fact, supported by existing authority. |
|||||||||
| Nicholas George DiCristina v. The Department of Employment Security, et al. | CA Illinois (USA) | 12 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
— | — | ||
|
The appellate court observed that the pro se appellant's opening brief cited cases that do not exist and exhibited hallmarks of generation by a large language model (repetitive 'refined' drafts, internal suggestions, and the statement 'Generative AI is experimental'). The court identified the fabricated citations and noted the brief's deficiencies but proceeded to decide the jurisdictional timeliness issue on the merits, affirming dismissal. |
|||||||||
|
Source: Jesse Schaefer
|
|||||||||
| Helmold & Mariya (No 2) | Family Court (Australia) | 12 September 2025 | Pro Se Litigant | Unidentified |
Fabricated
Case Law
(1)
|
Warning | — | — | |
|
The appellant admitted using generative AI to prepare his Notice of Appeal and Summary of Argument. The Court found several cited authorities could not be located (concluding they were fictitious) and held that deploying unverified AI-generated research that cites non-existent cases breaches duties not to mislead the court and risks contravening Pt XIVB of the Family Law Act 1975 (Cth) (on confidentiality of proceedings). |
|||||||||
| Mid-America Apartment Communities, Inc. v. Dennis Michael Philipson | W.D. Tennessee (USA) | 11 September 2025 | Pro Se Litigant | Unidentified |
Fabricated
Case Law
(1)
|
Warning | — | — | |
| Calvin Bradley v. Matthew Eichhorn, et al. | S.D. Ohio (USA) | 11 September 2025 | Pro Se Litigant | Implied |
Misrepresented
Case Law
(2)
|
Warning | — | — | |
|
Source: Jesse Schaefer
|
|||||||||
| Régie du bâtiment du Québec c. 9308-2469 Québec inc. | Régie du bâtiment du Québec (Canada) | 11 September 2025 | Pro Se Litigant | ChatGPT |
Fabricated
Case Law
(1),
Legal Norm
(1)
|
Disregarded AI-generated arguments | — | — | |
| Shantell Robinson v. Oglala Sioux Tribe, et al. | W.D. Oklahoma (USA) | 9 September 2025 | Pro Se Litigant | Unidentified |
Fabricated
Case Law
(1)
Misrepresented
Case Law
(1)
|
Plaintiff's claims dismissed with prejudice | — | — | |
| Ariel Mendones, et al. v. Cushman and Wakefield et al | SC California (USA) | 9 September 2025 | Pro Se Litigant | Unidentified |
Fabricated
Exhibits or Submissions
(5)
|
Terminating sanction: second amended complaint struck; entire action dismissed with prejudice. | — | — | |
|
The court found multiple exhibits (videos, photographs, messaging screenshots, and metadata) to be fabricated or materially altered using generative AI. The court deemed Plaintiffs' explanations not credible, declined criminal referral, declined monetary sanctions, and imposed a terminating sanction under Cal. Civ. Proc. Code § 128.7(b). |
|||||||||
| Case No. 2024가단144734 | D. Incheon (South Korea) | 9 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(1)
|
— | — | ||
|
As recounted here. |
|||||||||
| Poole v. Walmart, Inc. | N.D. Illinois (USA) | 5 September 2025 | Pro Se Litigant | Implied |
Fabricated
Case Law
(4)
Outdated Advice
Repealed Law
(1)
|
Warning | — | — | |