Jose Villavicencio v. Judge Stephanie Mingo
S.D. Ohio · Oct 7, 2025
What happened in this matter?
The court issued a formal caution to the pro se plaintiff after finding that the plaintiff submitted patently false characterizations of Supreme Court precedent and cited non-existent state-law authorities. The court recommended dismissal of the action for lack of subject-matter jurisdiction.
- Why the court cared
- The court reasoned that it lacked subject-matter jurisdiction to issue a writ of mandamus against a state court judge, as federal courts lack general authority to compel state officers to perform state-law duties. Furthermore, the court identified that the plaintiff's reliance on Marsh v. Chambers was a misrepresentation of the holding, and that other cited authorities were non-existent, necessitating a formal caution against the submission of false legal research.
- Why it matters now
- This case illustrates the risks of pro se litigants using AI tools to generate legal research without verification. It highlights the court's role in identifying and addressing the submission of fabricated or misrepresented authorities during initial screening, serving as a reminder of the potential for formal judicial warnings.
Why this matter is tracked
In a pro se action, the plaintiff sought a writ of mandamus to compel a state court judge to perform duties under state law. The plaintiff cited Marsh v. Chambers and various state-law authorities to support federal jurisdiction. The Magistrate Judge found the plaintiff's characterization of Marsh v. Chambers to be patently false and noted that several cited state-law authorities were incorrect or non-existent. The court concluded it lacked subject-matter jurisdiction because federal courts generally cannot issue mandamus to compel state court officers. The court recommended dismissal of the complaint and issued a formal caution to the plaintiff regarding the submission of false and non-existent legal authority, noting that such conduct may warrant future sanctions.
This case illustrates the risks of pro se litigants using AI tools to generate legal research without verification. It highlights the court's role in identifying and addressing the submission of fabricated or misrepresented authorities during initial screening, serving as a reminder of the potential for formal judicial warnings.
Record details
What the record establishes about AI use
The source document is indexed in a database of AI hallucination cases.
Report and Recommendation for dismissal of a pro se complaint for lack of subject-matter jurisdiction.
Correction behavior is not separately verified in the current record.
Tracked discrepancy record
3 citation, quotation, or authority issues are recorded in the source dataset.
- Misrepresented: Case Law | Plaintiff cited Marsh v. Chambers for the proposition that federal district courts may issue mandamus to compel state court officers; the court held this characterization was "patently false."
- Fabricated: Case Law | Plaintiff relied on several state-law citations that the court found to be incorrect or non-existent.
- Misrepresented: Legal Norm | Plaintiff asserted authority from "28 U.S.C. § 1362" and "28 U.S.C. § 136(2)" as support for mandamus; the court noted those provisions do not provide such authority and construed the request under 28 U.S.C. § 1651.
Questions this record answers
- What happened in Jose Villavicencio v. Judge Stephanie Mingo?
- The court issued a formal caution to the pro se plaintiff after finding that the plaintiff submitted patently false characterizations of Supreme Court precedent and cited non-existent state-law authorities. The court recommended dismissal of the action for lack of subject-matter jurisdiction.
- Why does Jose Villavicencio v. Judge Stephanie Mingo matter for legal AI risk?
- This case illustrates the risks of pro se litigants using AI tools to generate legal research without verification. It highlights the court's role in identifying and addressing the submission of fabricated or misrepresented authorities during initial screening, serving as a reminder of the potential for formal judicial warnings.
- What does the public record establish about Jose Villavicencio v. Judge Stephanie Mingo?
- The record summarizes the outcome described in the linked public source. The recorded document is hosted in the upstream publisher archive. This page is not a substitute for the complete docket, subsequent history, or jurisdiction-specific advice.
- Which source supports this Jose Villavicencio v. Judge Stephanie Mingo summary?
- The recorded source is Damien Charlotin case archive. It is classified as publisher document archive; review the linked material and subsequent docket history before relying on this summary.
Related matters
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