Recurso de Suplicación 0005472/2025
T.S.X. Galicia · Jul 7, 2026
What happened in this matter?
The T.S.X. Galicia sanctioned a lawyer with a 1,800 EUR fine and a referral to the Bar Association for submitting a brief containing 24 fabricated citations generated by an unverified AI tool. The court held that the lawyer failed in their duty of human oversight and professional diligence required by Spanish procedural and deontological standards.
- Why the court cared
- The court reasoned that the lawyer breached the duty of procedural good faith and professional diligence by failing to verify AI-generated citations. It determined the fine amount by benchmarking it against the annual cost of professional legal AI tools, concluding that such tools would have prevented the hallucinations. The court also considered the lawyer's admission of fault and lack of prior disciplinary history as mitigating factors in setting the fine at the lower end of the statutory range.
- Why it matters now
- This case establishes a clear precedent for judicial sanctioning of AI-driven 'hallucinations' in Spain. It highlights that courts may use the cost of professional AI tools as a benchmark for fines, emphasizing that the failure to verify AI output constitutes a breach of professional duty.
Why this matter is tracked
Fabricated: Case Law | Court found quoted material attributed to SSTC 60/2008 was fabricated and not present in that ruling. Outcome: Bar Referral. Earlier decision noticing the issues here.In an innovative approach, the court set the fine amount by reference to the annual cost of a verified legal AI tool (citing products such as Sof-IA by Tirant lo Blanch, GenIA-L by Lefebvre, Harvey AI, and others), reasoning that the use of such a tool would have eliminated or drastically reduced the risk of hallucination
This case establishes a clear precedent for judicial sanctioning of AI-driven 'hallucinations' in Spain. It highlights that courts may use the cost of professional AI tools as a benchmark for fines, emphasizing that the failure to verify AI output constitutes a breach of professional duty.
Record details
What the record establishes about AI use
The court identified the use of generative AI for drafting the brief.
The court issued an 'Auto' (order) in a separate piece of litigation (pieza separada) following the discovery of fabricated citations in a Recurso de Suplicación.
Correction behavior is not separately verified in the current record.
Tracked discrepancy record
6 citation, quotation, or authority issues are recorded in the source dataset.
- Fabricated: Case Law | Court found quoted material attributed to SSTC 60/2008 was fabricated and not present in that ruling.
- Fabricated: Case Law | Passages attributed to STS 459/2022 were identified as invented and do not correspond to any paragraph of that decision.
- Fabricated: Case Law | Citation STS 23/03/21 R. 2341/19 was found not to exist (apocryphal resource number) though quoted in the brief.
- Fabricated: Case Law | Court identified the quoted excerpt attributed to STS 12/04/19 R. 4123/17 as a false quotation (does not match the ATS referenced).
- Fabricated: Case Law | The brief attributed a passage to the STJUE C-127/2019 that does not appear in that preliminary‑reference file; court found the quotation invented.
- Fabricated: Case Law | Court determined quoted passages attributed to SSTC 142/2015 were invented and do not appear in that decision.
Questions this record answers
- What happened in Recurso de Suplicación 0005472/2025?
- The T.S.X. Galicia sanctioned a lawyer with a 1,800 EUR fine and a referral to the Bar Association for submitting a brief containing 24 fabricated citations generated by an unverified AI tool. The court held that the lawyer failed in their duty of human oversight and professional diligence required by Spanish procedural and deontological standards.
- Why does Recurso de Suplicación 0005472/2025 matter for legal AI risk?
- This case establishes a clear precedent for judicial sanctioning of AI-driven 'hallucinations' in Spain. It highlights that courts may use the cost of professional AI tools as a benchmark for fines, emphasizing that the failure to verify AI output constitutes a breach of professional duty.
- What does the public record establish about Recurso de Suplicación 0005472/2025?
- 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 Recurso de Suplicación 0005472/2025 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
Related by court, jurisdiction, tool, or classified failure pattern. Similarity does not imply the same facts or outcome.