A.M., F.A. c/ C.N.H y otros
CA Río Negro · Dec 12, 2025
- Jurisdiction
- international
- Court
- CA Río Negro
- Record ID
- am-fa-c-cnh-y-otros-2025-12-12
- Observed outcome
- The appeal was rejected, the lower court's judgment was confirmed, and the plaintiff was ordered to pay costs.
- Known monetary consequence
- Not recorded
Why this matter warrants attention
The court admonished counsel for citing nonexistent and misrepresented case law, identifying these as AI-generated hallucinations. The court found that the plaintiff failed to meet the burden of proof regarding the accident's mechanics, leading to the rejection of the appeal and the confirmation of the lower court's judgment against the plaintiff.
Fabricated: Case Law | Counsel cited this STJ Río Negro decision as supporting objective liability; court could not locate the precedent and determined it to be nonexistent. || Fabricated: Case Law | Counsel cited this STJ Río Negro decision; court was unable to find it and treated it as a non-existent AI-generated citation. || Fabricated: Case Law | Counsel cited this STJ Río Negro decision; court could not locate it and concluded it was a fabricated citation likely produced by generative AI. || Fabricated: Case Law | Counsel cited this STJ Río Negro decision; court's search found no trace of the precedent and characterized it as an AI 'hallucination'. || Fabricated: Case Law | Counsel cited a provincial/circuit civil appellate decision 'Mosca c/ Vilches' (CNCiv Sala B) as binding support; court could not locate that decision in official repositories and treated it as nonexistent. || Misrepresented: Case Law | Counsel cited CSJN Fallos 308:1109 as supporting the proposition; court found the cited CSJN decision (Honorio Juan Luján) exists but determined it was unrelated to the proposition invoked (misuse/misrepresentation of precedent).
Argentine appellate courts are admonishing counsel for AI hallucinations on the record; admonishments stay published and traceable.
Failure modes and consequences
- Fake Citations
- Misrepresented Authority
- Tort
- Appellate
- Warning
- AI attribution
- Reported
- Recorded tool
- AI (implied, unspecified)
- Known monetary consequence
- Not recorded
- Procedural posture
- Appellate review of a lower court judgment in a civil damages case, resulting in the confirmation of the dismissal of the plaintiff's claim.
Damien Charlotin case archive
Publisher document archive. The recorded document is hosted in the upstream publisher archive.
Open underlying sourceA recorded source link is not a substitute for checking the underlying order, filing, opinion, or disciplinary record.
What this record does—and does not—establish
The court attributed the fabricated citations to generative AI.
Retained unchanged after audit: the existing summary is source-specific, non-placeholder, and supported by the recorded source link. Read the underlying source before relying on it for legal advice or a filing.
Latest evidence review: Primary Document Verified (high confidence).
Controls suggested by the public record
- Verify each cited authority, quotation, and proposition against the underlying source before filing.
- Retain a matter-level record of source checks and corrections.