5 Feb 2026 to 9 Oct 2026United StatesvLex, Paxton AI and NotebookLM (reported)
In a federal trademark suit in the U.S. District Court for the Southern District of New York, the court on 5 February 2026 struck a company defendant's motion papers and entered default judgment against it as a sanction on its lawyer, after his filings repeatedly cited nonexistent cases and misattributed quotations. The lawyer said he had found and cite-checked cases with AI tools (vLex and Paxton AI) and used NotebookLM to review a later submission; the court rejected his explanations and found he acted in bad faith. On 9 October 2026 the court described the citations as produced by generative AI and ordered the lawyer to pay $38,877.59 in fees and costs to the firm of a co-defendant's former lawyer, who had reported the false citations to the court.
Core + contextual relations Medium reported severity
AI involvement supported · Causal attribution established · 2 sources, 1 underlying account · Added 16/10/2026
24 Apr 2026United StatesUnidentified AI research tool
On 24 April 2026 the Supreme Court of Alabama dismissed an appeal by two siblings in a family dispute over living trusts because their lawyer, W. Perry Hall, had filed briefs in which most of the legal authorities were misquoted or did not exist. The court said they appeared to be AI hallucinations, and at a show-cause hearing in February 2026 Hall admitted that many authorities did not exist and that he had improperly used AI to obtain them. The court ordered Hall to pay the opposing party's fees and costs of $17,200 and double appeal costs, barred him from filing in the court without a co-signing attorney and referred him to the Alabama State Bar. It said the dismissal was imposed as a sanction because of the particularly egregious facts. One justice, concurring in part and dissenting in part, objected to dismissing the appeal as a sanction for the lawyer's conduct but would have affirmed the judgment against the clients on the merits.
Core + contextual relations Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 1 source · Added 14/10/2026
3 Jun 2026United StatesUnidentified AI tool
On 3 June 2026 the US Court of Appeals for the Ninth Circuit fined immigration attorneys Mike Singh Sethi and William Rounds $2,500 each and suspended both from practice before the court for six months. Briefs filed in an asylum petition for review cited two cases that do not exist and attributed quotations to opinions that do not contain them. In a motion to correct, the attorneys called the errors typographical, and at oral argument Rounds twice said AI was not used. In their response to the court's order to show cause, they conceded that the errors were probably the product of unauthorised AI use by the firm's unlicensed brief writers and a failure to check citations. The court said the suspension was owed to their repeated failure of candour. The Board of Immigration Appeals then suspended Sethi from practice before the Board, the immigration courts and the Department of Homeland Security for six months, effective 13 June 2026, and designated that decision as a precedent on 1 October 2026.
Contextual tracker case Medium reported severity Regulatory Action
AI involvement supported · Causal attribution established · 2 sources · Added 14/10/2026
2 Sept 2026United StatesMeta AI
On 1 September 2026 Kalie Robins, a Utah travel creator, posted a short Instagram video of herself singing in the car with one of her daughters; it was also shown on Facebook. The next day she noticed Meta AI had placed suggested questions under the post, starting with 'Who's the child passenger?'. Clicking the prompts, she said, produced her two daughters' names, birth information, photos and videos drawn from her own and relatives' past posts, including a newborn photo from her mother's account and a picture she believed she had deleted years earlier, and a further prompt, 'Where does Kalie Robins live?', assembled older and newer posts into her likely location. Her 2 September reaction video drew more than 310,000 likes. Meta told reporters the prompts 'missed the mark', 'should never have been generated' and had been fixed, while saying the feature only surfaces information the user can already access; it disputed that a long-deleted photo was used, saying the photo had been deleted shortly before the video and remained briefly visible through a bug. Robins said Meta never contacted her and that the episode left her feeling she had 'failed' her children.
Contextual tracker case Low reported severity Involving minors Internal Action
AI involvement supported · Causal attribution supported · 4 sources · Added 18/09/2026
16 May 2026United StatesGemini (reported)
A Boca Raton, Florida father told WPBF, WPTV and ABC News that after his teenage daughters took a Lyft home from the beach (on Saturday 16 May 2026, according to ABC News), he was charged a $75 damage fee because the driver reported that the riders had left a mess. Lyft customer service told him the driver had sent pictures. One daughter pointed out a Gemini logo in the corner of the photo, which the family took as showing it was AI-generated. The father says Lyft then agreed, apologised and blocked the driver. Lyft's statements say it reviewed the rider's concerns, offered reimbursement and, per its later statements, permanently removed the driver; they do not say the photo was AI-generated.
Contextual tracker case Low reported severity Involving minors Internal Action
AI involvement reported · Causal attribution alleged · 3 sources · Added 17/09/2026