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Sanctions watch

Every incident where a lawyer got caught filing AI-fabricated citations. The Hall of Shame.

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Incidents tracked
1
Incidents in 2026
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In fines, where reported
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The curve

Incidents per month

Last 18 months of published incidents, by the date of the court's order.

Apr 2025 Sep 2026

Blamed by name

ChatGPT 20 Copilot 5 AI-assisted legal software 2 ChatGPT-4o 1 Claude 1 CoCounsel 1 Legal Genius 1 Lexis+ AI 1 Strongsuit 1

Counts only incidents where the filing court or the reporting named the tool.

Hall of Shame

All Warned 1 Caught, not sanctioned 1

Showing 1–1 of 1 incident involving ChatGPT-4o. Clear filters

Warned ChatGPT-4o 2026-02-09
The court struck a Stanford professor's expert declaration in its entirety for fabricated citations, an order affirmed by the Eighth Circuit.
Kohls v. Ellison · Jeff Hancock · United States Court of Appeals for the Eighth Circuit · MN
“Rule 11 imposes a “personal, nondelegable responsibility” to ensure the accuracy of everything filed.”
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The file →
  • Kohls v. Ellison
  • A Stanford professor submitted an expert declaration containing fabricated citations
  • The expert declaration was struck in its entirety
  • U.S. Court of Appeals for the Eighth Circuit
  • Affirmed February 9, 2026; established that counsel has a personal duty to validate expert filings
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