Sanctions — Week of 2026-04-27

47 AI-hallucination sanctions decided between 2026-04-27 and 2026-05-03 (ISO week 2026-W18). 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: 47
With monetary penalty: 6 of 47
Courts: 32
ISO week: 2026-W18

Week over week: 47 sanctions filed the week of 2026-04-27 vs 29 sanctions the prior week (2026-04-20) — up 18 from the prior week.

Outcomes this week

Warning13
Admonishment3
Order To Show Cause3
Admonishment & Warning1
Admonishment; Monetary Fine; 4 Hours Live Cle; Order Circulation1
Adverse Costs Order1
Appeal Dismissed And Costs Awarded1
Argument Ignored1
Brief Partly Struck1
Impugned Judgment Stayed And Going To Review1
Increased Costs Award1
Issues Deemed Waived For Failure To Provide Valid Supporting Authority1
Monetary Sanction1
Monetary Sanction; Bar Referral; Cle1
Monetary Sanction; Order To Notice Client1
Monetary Sanction; Reporting To Other Courts1
Motion Struck; Warning1
Order To Notify Client1
Ordered To Attend An Ethics Seminar And Produce Proof Of Attendance1
Page Limits And Warning1
Partial Refusal Of Trademark Application1
Show Cause Order1
Warning; Refiling Allowed1

AI tool implicated

Implied33
Unidentified9
ChatGPT1
CoCounsel1
Fastcase; Google AI1
LexisNexis1
LexisNexis+ (Protégé)1

This week’s read-across

47 rulings landed on the docket between 2026-04-27 and 2026-05-03. The most common recorded outcome this week was Warning (13 of 47). Of the 47 rulings, 6 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.

Nearby weeks

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