25 Sept 2025NetherlandsChatGPT (reported)
A master's student at the University of Groningen used an AI tool while preparing the reference list of his thesis. The examiner found many non-existent references, and on 25 September 2025 the Faculty of Economics and Business exam board declared all his work for the thesis course invalid for fraud, excluded him from the course for one year and told him he no longer qualified for a cum laude judgment. The university's examination appeals board upheld this on 31 March 2026. The student said he had only used an AI tool to categorise sources, giving it his existing reference list as input. On 12 August 2026 the Administrative Jurisdiction Division of the Council of State found that the references in the thesis text led to existing, relevant sources, that the AI had evidently garbled the student's own reference list, and that only carelessness, not fraud, had been shown. It annulled both decisions and ordered the thesis to be assessed again.
Core concern Medium reported severity
AI involvement supported · Causal attribution supported · 1 source · Added 02/11/2026
21 Oct 2025 to 3 Apr 2026United StatesCoCounsel
In a published opinion of 3 April 2026, the U.S. Court of Appeals for the Sixth Circuit addressed the briefs a lawyer appointed under the Criminal Justice Act had filed for an indigent defendant appealing a sentencing enhancement in a drug-trafficking case. The court noticed that the principal brief's file name was 'CoCounsel Skill Results' and found three quotations that appear in no legal authority and misstatements of two precedents. The lawyer admitted that a staff member had used Westlaw's CoCounsel to create the first draft, that he repeated the process for the reply, and that the false quotations came from artificial intelligence he did not verify. The court denied him compensation for the appeal, referred the opinion for possible disciplinary proceedings and to the Kentucky Bar Association, and by separate order removed him, locked his briefs and ordered replacement counsel to file new ones, which it said further delayed resolution of the defendant's appeal. The court acknowledged his candour and his 40 years without discipline.
Core + contextual relations Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 3 sources, 2 underlying accounts · Added 19/10/2026
21 Nov 2025United StatesUnidentified AI drafting tool
On 25 September 2026 a judge of the U.S. District Court for the District of Massachusetts granted a defence motion for sanctions under Federal Rule of Civil Procedure 11 against a California-barred lawyer admitted for one case (pro hac vice) to represent the plaintiff. The court found that an opposition the lawyer filed on 21 November 2025 was replete with inaccurate citations, including a quotation attributed to a case with a fictitious Westlaw citation, and that later oppositions cited a non-existent case. In response to the court's order to show cause, the lawyer admitted using AI to draft the first opposition and explained a belief that the enterprise-level AI software in use did not hallucinate cases. The court revoked the lawyer's pro hac vice admission and ordered the lawyer's firm to pay the defendants' reasonable fees and costs, capped at $10,000. The order does not name the AI product.
Core concern Medium reported severity Regulatory Action
AI involvement supported · Causal attribution supported · 1 source · Added 16/10/2026
31 Jan 2025 to 12 Dec 2025United StatesUnidentified AI drafting tool
On 12 December 2025 the U.S. District Court for the District of Oregon dismissed with prejudice the claims of plaintiffs in a family dispute over their late mother's estate and family property, as a sanction for what the court called their misuse of generative artificial intelligence, and found their continual violations of the court's Local Rules an additional basis for the dismissal. Three of the plaintiffs' summary-judgment briefs cited fifteen nonexistent cases and fabricated quotations attributed to eight real authorities. The plaintiffs had said the inaccurate citations came from reliance on an automated legal citation tool. The court found that the plaintiffs shared responsibility with their lead lawyer and that one plaintiff, a frequent self-represented litigant, was likely the person who used AI to draft the briefs. It struck the briefs, ordered the lead lawyer to pay $15,500 to the court and awarded the defendants their fees. In March 2026 it set those fees at $94,704.38, ordering the lead lawyer to pay 85% and local counsel 15%. In June 2026 it denied the plaintiffs' motion to reconsider a later ruling for the defendants on a counterclaim.
Core + contextual relations Medium reported severity Lawsuit Dismissed
AI involvement supported · Causal attribution established · 3 sources, 1 underlying account · Added 15/10/2026
7 May 2025 to 23 Jul 2025Event location unknownChatGPT
In an incarcerated man's lawsuit against Alabama prison officials in the US District Court for the Northern District of Alabama, two motions filed in May 2025 for the defence of a former Alabama corrections commissioner contained five citations that did not exist or did not support the propositions cited. Lawyers of the Butler Snow firm, which the state retains to defend its prisons, told the court that a partner had obtained the citations from ChatGPT and had not verified them. On 23 July 2025 Judge Anna M. Manasco publicly reprimanded three of the firm's lawyers, disqualified them from the case and referred the matter to the Alabama State Bar, and ordered them to give the order to clients, opposing counsel and judges in all their pending cases. She declined to suspend them and released the firm and two other lawyers without sanction.
Core concern Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 3 sources, 2 underlying accounts · Added 15/10/2026
25 Feb 2025 to 7 Jul 2025Event location unknownUnidentified AI drafting tool
In the defamation case Coomer v. Lindell in the US District Court for the District of Colorado, a brief that lawyers for Mike Lindell and MyPillow filed on 25 February 2025 contained nearly thirty defective citations, including citations of cases that do not exist. At a conference on 21 April 2025 lead counsel Christopher Kachouroff told Judge Nina Y. Wang that he had drafted the motion and then 'ran it through AI' and had not personally checked the citations. Counsel later said a wrong draft had been filed by mistake; the court was not persuaded. On 7 July 2025 the court found that he and co-counsel Jennifer DeMaster had violated Rule 11 and fined each $3,000 (Kachouroff jointly with his law firm). The court did not sanction Lindell or his companies.
Core concern Low reported severity Regulatory Action
AI involvement supported · Causal attribution supported · 3 sources, 1 underlying account · Added 14/10/2026
15 Dec 2025 to 1 Oct 2026CanadaUnidentified AI drafting tool
On 1 October 2026 the Quebec Court of Appeal ordered court costs against a self-represented appellant in a family-law contempt appeal as a sanction for appeal filings that, in the court's description, he had written with artificial intelligence and that contained two references to non-existent judgments and one inaccurate reference to a cited paragraph. The court held that AI may be used to draft appeal filings only if the litigant verifies the authorities, found that he had breached the Chief Justice's notice on AI use, and described his conduct as negligence rather than bad faith. It rejected the respondent's request for a separate $10,000 sanction and, for reasons unrelated to AI, reduced the contempt penalty imposed at first instance. The decision does not name the AI tool.
Core + contextual relations Low reported severity Regulatory Action
AI involvement supported · Causal attribution supported · 1 source · Added 12/10/2026
1 May 2025CanadaChatGPT
An Ontario lawyer relied, at a 1 May 2025 Superior Court hearing in an estate and family-law matter, on a factum citing cases that do not exist or do not support the propositions cited. The judge ordered her to show cause why she should not be cited for contempt, then withdrew the order on 20 May 2025 after she said her staff had used ChatGPT without her knowledge. On 30 September 2025 she told the court that she alone had prepared the factum with ChatGPT and that her earlier account was untrue; the court referred the matter to Ontario’s Attorney General for criminal contempt proceedings in December 2025. In July 2026 the Law Society Tribunal suspended her licence for six months, finding she relied on AI-generated non-existent case law and lied about it. The account comes from legal-press and law-firm reports of the decisions; the criminal contempt case was still ongoing at the last report read.
Core concern Medium reported severity Regulatory Action
AI involvement reported · Causal attribution supported · 7 sources, 2 underlying accounts · Added 12/10/2026
23 Dec 2025 to 28 Apr 2026United StatesUnidentified AI drafting tool
In December 2025 an Assistant U.S. Attorney in the Eastern District of North Carolina filed a response brief for the Department of Defense in a self-represented veteran's lawsuit over health-insurance coverage. The plaintiff identified fabricated quotations and misdescribed case holdings in it. The attorney first attributed the errors to an unfinalized draft filed by mistake. On 2 March 2026 Magistrate Judge Robert T. Numbers II ordered him to show cause why he should not be sanctioned. At the 10 March hearing the attorney, Rudy Renfer, said under oath that he had accidentally overwritten his draft, panicked and used artificial intelligence to draft the brief, and had not verified the cases it cited; he said he had resigned after 17 years in the office, and Courthouse News reported he was terminated the next day. On 28 April 2026 the court issued a public reprimand instead of a fine, writing that his reputation was in tatters and that his job loss already exceeded the usual fines.
Core concern Medium reported severity Regulatory Action
AI involvement supported · Causal attribution supported · 5 sources, 4 underlying accounts · Added 09/10/2026
22 Jan 2025 to 24 Feb 2025Event location unknownMX2.law
A Wyoming federal court fined three lawyers a total of $5,000 and removed the drafting lawyer from Wadsworth v. Walmart after a January 2025 filing cited eight nonexistent cases. The order identifies MX2.law as the drafting tool, records failure to verify its output and credits subsequent remedial steps.
Core concern Medium reported severity
AI involvement supported · Causal attribution supported · 1 source · Added 29/09/2026
5 Nov 2025 to 8 Jun 2026United StatesFirst Drafts and unidentified legal research tool
In a fee dispute between a Louisiana attorney and the City of Aberdeen, Mississippi, briefs filed for both sides in late 2025 cited six cases that do not exist. The attorneys admitted the citations came from unverified AI use: the plaintiff's out-of-state counsel, Kathleen M. Wilson, drafted her filing with an AI drafting program called 'First Drafts', and the City's out-of-state counsel, Kathryn Y. Williams, used an in-house AI legal research tool. Senior Judge Sharion Aycock stayed the case and cancelled the March 2026 trial, then on 8 June 2026 revoked both attorneys' pro hac vice admissions, barred them from the district for two years and fined them $2,500 and $3,500, and disqualified and fined the two local counsel who had signed the filings. Both litigants were left without counsel and given 60 days to find new representation.
Core concern Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 4 sources, 2 underlying accounts · Added 29/09/2026
1 Aug 2025 to 9 Sept 2026United StatesChatGPT
Santa Fe defense attorney Stephen Aarons used ChatGPT (OpenAI's o3) on a Rev.com transcript and the record to draft briefing in the murder appeal of Oscar Renee Sandoval; the brief contained fabricated witnesses and testimony (including police officers 'Michelle Amarillo' and 'Sanchez' and invented testimony attributed to real people) and misdescribed real precedents. After a 21 August 2026 show-cause hearing at which Aarons admitted he had not verified the output, the New Mexico Supreme Court's written order of 9 September 2026 held him in direct contempt, fined him $5,000 payable to the State Bar Client Protection Fund within 30 days, removed him from the case, barred him from appearing before the court pending a disciplinary-board referral, struck the filed briefs and reassigned the appeal to the public defender.
Core concern Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 3 sources · Added 15/09/2026