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Sanctions — Week of 2025-09-15

23 AI-hallucination sanctions decided between 2025-09-15 and 2025-09-21 (ISO week 2025-W38). Every ruling below is sourced from the public docket — case name, decided date, outcome, AI tool implicated (when named), and any monetary penalty language pulled verbatim from the ruling.

Week at a glance

Total rulings
23
With monetary penalty
4 of 23
Courts
21
ISO week
2025-W38

Outcomes this week

  • Warning10
  • Monetary Sanction2
  • Admonishment And Warning1
  • Appeal Dismissed For Lack Of Genuine Argument1
  • Costs Order; Disclosure Obligations1
  • Counsel's Work Not Counted For Fees; Referral To The Bar1
  • Disregarded All Fictitious/unfindable Sources, Admonished Counsel1
  • Monetary Sanction; Plaintiff's Reply Withdrawn And Stricken; Order To Self-report To Bar(s) And Serve Client With Order1
  • Order To Show Cause Discharged; Admonishment1
  • Plaintiff Awarded Attorney Fees And Costs For Spotting Hallucinated Authority1
  • Recurso De Apelación Declarado Desierto; Costas Al Apelante; Se Notificará Al Letrado Y Al Colegio De Abogados. No Se Impusieron Sanciones Profesionales.1
  • Upcoming Sanction1

AI tool implicated

  • Implied18
  • Unidentified3
  • ChatGPT1
  • Westlaw's Quick Check and AI Case Search Tool1

This week’s read-across

23 rulings landed on the docket between 2025-09-15 and 2025-09-21. The most common recorded outcome this week was Warning (10 of 23). Of the 23 rulings, 4 carried an explicit monetary penalty in the ruling text.

Implied was the most-implicated AI tool this week (courts rarely require the attorney to name the tool by product name on the record; “Implied” means the ruling described an AI-generated brief without a product name).

The pattern each week is remarkably stable: existence failures (Layer 1) dominate. Attorneys file briefs containing citations that do not exist in any primary source — usually because a general-purpose LLM fabricated the citation and no deterministic pre-filing check caught it. Every ruling below is a preventable filing. See /verify for the pre-filing tool.

All rulings, week of 2025-09-15

Gabriel v. Mareco

CA Buenos Aires · Decided 2025-09-15 · Recurso de apelación declarado desierto; costas al apelante; se notificará al letrado y al Colegio de Abogados. No se impusieron sanciones profesionales. · AI tool: Implied.

Read the full teardown →

Courts represented this week

Nearby weeks

← Prev: 2025-W37 (15)Next: 2025-W39 (24) →

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Informational only. Not legal advice. Data derived from public court records; corrections at /contact.