Search 1,395 source-linked cases involving fabricated citations and other AI-generated legal errors.
837 judge-case associations across 551 judges and 164 courts.
Source: Damien Charlotin
Case screener
AI-related case
Fabricated: Case Law | Counsel cited a nonexistent federal case as authority; the error was identified by Turo and acknowledged by G.P., who replaced it with a California Court of Appeal decision. The court referred to the authority as apparently fabricated and did not impose sanctions.
Judges: Kymberly Kathryn Evanson
AI-related case
Fabricated: Exhibits & Submissions | Plaintiff's counsel (Jocelyn Stewart) used Claude or ChatGPT to generate citation data provided as an appendix/submission to the court and experts, resulting in numerous false citations in filings and expert exhibits. || Fabricated: Other | AI-generated formatted citation table appended to expert reports of James Kababick and Ronald Shippee contained numerous false/fabricated academic citations; plaintiff admitted providing the same AI-generated citation table to both experts. || Fabricated: Other | Dr. Gabriel Holguin's expert report contained multiple AI-generated fabricated citations to academic articles in portions later withdrawn; the Court found these hallucinated citations undermined his credibility and rendered his opinions unreliable.
Judges: Tiffany Mae Cartwright
AI-related case
Order to show cause is here; tools disclosed later (see here).
Judges: Tiffany Mae Cartwright
AI-related case
Fabricated: Case Law | Cited nonexistent cases and fabricated authorities; Amazon identified multiple authorities that do not exist. || False Quotes: Case Law | Paired real reporter citations with unrelated or nonexistent case names and attributed propositions to cases that do not support them. || Misrepresented: Legal Norm | Misstated statutory and regulatory authorities and attributed legal propositions to authorities that do not support them.
Judges: Robert S. Lasnik
AI-related case
Order to Show Cause is here.
Judges: Tiffany Mae Cartwright
AI-related case
Fabricated: Case Law | Plaintiff cited 'Gile v. Dolgen Cal., LLC, 2023 WL 2669812, at *3 (9th Cir. 2023) (unpublished)'; Court could not locate a case at that citation and found a different Gile decision (2022 WL 17248087) that did not support Plaintiff's waiver argument. || Fabricated: Case Law | Plaintiff cited 'Britton v. Co-op Banking Grp., 4 F.4th 742 (9th Cir. 2021)'; Court could not locate that citation, instead identifying older Britton decisions with different citations and holdings, concluding the cited authority was nonexistent or misrepresented.
Judges: Kymberly Kathryn Evanson
AI-related case
Fabricated: Case Law | Plaintiff cited a non-existent district-court decision as precedent; the court found the docket number cited corresponded to a different case and could not locate the cited authority on the district's docket, and ordered show-cause re sanctions.
Judges: Tana Lin
AI-related case
Misrepresented: Case Law | Court noted this existing case was cited but does not support the proposition for which plaintiff offered it (footnote 10). || Fabricated: Case Law | Court identified this citation as non-existent and listed it as an example of plaintiff's fabricated authority (footnote 9). || Misrepresented: Case Law | Court noted this existing case was cited but does not support the proposition for which plaintiff offered it (footnote 10). || Fabricated: Case Law | Court identified this citation as non-existent and listed it as an example of plaintiff's fabricated authority (footnote 9).
Judges: Benjamin Hale Settle
AI-related case
Fabricated: Legal Norm | Plaintiffs repeatedly cited '21 U.S.C. § 343(r)(6)(D)', but that subsection does not exist; Plaintiffs' counsel admitted the citation arose from insufficiently supervised LLM use and the court called the inclusion unacceptable.
Judges: John Hyungseung Chun
AI-related case
Fabricated: Case Law | Plaintiff cited Mazza v. Washoe Cnty.; the Court identified this as a non-existent case cited by the plaintiff. || Fabricated: Case Law | Plaintiff cited Shirley v. Precision Castparts Corp.; the Court identified this citation as non-existent. || Misrepresented: Case Law | Plaintiff cited Bounds v. Smith to support a proposition; the Court found the case did not support the proposition offered. || Fabricated: Legal Norm | Plaintiff relied on regulatory and plan citations that the Court noted do not exist as cited (plaintiff later characterized them as typographical errors). || Misrepresented: Case Law | Plaintiff cited Ecological Rights Foundation v. Pacific Lumber Co.; the Court found the case did not support the proposition for which it was offered.
Judges: Benjamin Hale Settle