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Corpus matter record

Ader v Ader

SC New York · Oct 1, 2025

NY / stateEditorial impact: mediumfake citationsfabricated quotesmisrepresented authoritytrialMonetaryBar Referral
Direct answer

What happened in this matter?

The court sanctioned defense counsel for submitting filings containing AI-hallucinated citations and false quotations. The court ordered the defendants and their counsel to pay the plaintiff's reasonable attorney's fees and costs incurred in addressing the frivolous conduct and referred the matter to the First Department Grievance Committee and the New Jersey Office of Attorney Ethics.

Why the court cared
The court reasoned that while AI use is not inherently improper, counsel has a non-delegable duty of candor to ensure the accuracy of all factual and legal representations. Counsel's failure to verify AI-generated content, coupled with initial denials of AI use, constituted frivolous conduct under 22 NYCRR § 130-1.1, necessitating monetary sanctions and referral to disciplinary authorities to maintain the integrity of the profession.
Why it matters now
Never defend AI misuse with more unvetted AI; supervising partners must personally verify every citation in sanctions responses.

Why this matter is tracked

Fabricated: Case Law | Non-existent case citation appeared in Defendants' summary judgment opposition; court found it to be an AI hallucination and counsel later conceded AI use. Outcome: Costs Order; Referral to Bar Authorities. "This case adds yet another unfortunate chapter to the story of artificial intelligence misuse in the legal profession. Here, Defendants' counsel not only included an AI-hallucinated citation and quotations in the summary judgment brief that led to the filing of this motion for sanctions, but also included multiple new AIhallucinated citations and quotations in Defendants' brief opposing this motion. In other words, counsel relied upon unvetted AI—in his telling, via inadequately supervised colleagues—to defend his use of unvetted AI."

Operational lesson

Never defend AI misuse with more unvetted AI; supervising partners must personally verify every citation in sanctions responses.

Record details

New YorkSingle-state evidence scope
Explore NYOpen its source-linked jurisdiction page and related matters.
CourtSC New York
Jurisdictionstate
Circuit2nd Circuit
DateOct 1, 2025
UN
AI toolUnidentified
Party typeLawyer
OutcomeThe court granted the plaintiff's motion for sanctions, ordering the defendants and their counsel to pay the plaintiff's reasonable attorney's fees and costs, and mandated a referral to the First Department Grievance Committee and the New Jersey Office of Attorney Ethics.
Known amount$1
Professional sanctionReferral to the Grievance Committee for the Appellate Division, First Department and the New Jersey Office of Attorney Ethics.
Attribution boundary

What the record establishes about AI use

admitted

Counsel admitted to using AI but did not specify the tool.

Procedural posture

The court granted the plaintiff's motion for sanctions following oral argument on September 24, 2025, finding that defense counsel engaged in frivolous conduct by submitting AI-hallucinated citations and quotations in summary judgment and sanctions-opposition briefing.

Correction behavior

Correction behavior is not separately verified in the current record.

Tracked discrepancy record

4 citation, quotation, or authority issues are recorded in the source dataset.

  1. Fabricated: Case Law | Non-existent case citation appeared in Defendants' summary judgment opposition; court found it to be an AI hallucination and counsel later conceded AI use.
  2. Fabricated: Case Law | Defendants' opposition to the sanctions motion contained four citations that do not exist (identified by Plaintiff and cited by the Court as AI-generated).
  3. False Quotes: Case Law | Seven quotations in Defendants' sanctions-opposition brief do not exist in the cited cases (Plaintiff identified them; Court treated them as AI-generated false quotations).
  4. Misrepresented: Case Law | Three quotations in Defendants' briefs were from real cases but do not support the propositions for which they were offered (misstated precedent identified by Plaintiff).

Questions this record answers

What happened in Ader v Ader?
The court sanctioned defense counsel for submitting filings containing AI-hallucinated citations and false quotations. The court ordered the defendants and their counsel to pay the plaintiff's reasonable attorney's fees and costs incurred in addressing the frivolous conduct and referred the matter to the First Department Grievance Committee and the New Jersey Office of Attorney Ethics.
Why does Ader v Ader matter for legal AI risk?
Never defend AI misuse with more unvetted AI; supervising partners must personally verify every citation in sanctions responses.
What does the public record establish about Ader v Ader?
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 Ader v Ader 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.

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