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Fay v. Warren Hospitality Suites, Inc.

Court
E.D. Michigan
Jurisdiction
USA
Decided
2026-09-09
AI tool
Unidentified
Outcome
Monetary Sanction
Monetary penalty
10000 USD

What was hallucinated

Fabricated: Case Law | Plaintiff's filings attributed apparently fictitious quotations to judicial decisions; the court found that the quotations did not appear to exist. || Misrepresented: Case Law | Plaintiff's filings cited cases for propositions they did not support and used parentheticals that did not accurately reflect the cited decisions; counsel acknowledged at least eleven such instances.

Sanction teardown · E.D. Michigan, USA · 2026-09-09

Fay v. Warren Hospitality Suites, Inc.

What happened

In E.D. Michigan, USA, a filing relied on an unnamed/unconfirmed AI tool to help draft legal argument. The court identified the following problems with the citations in that filing:

  • Fabricated (Case Law)
    Plaintiff's filings attributed apparently fictitious quotations to judicial decisions; the court found that the quotations did not appear to exist.
  • Misrepresented (Case Law)
    Plaintiff's filings cited cases for propositions they did not support and used parentheticals that did not accurately reflect the cited decisions; counsel acknowledged at least eleven such instances.

Which AI tool

an unnamed/unconfirmed AI tool. Note: Charlotin's public database records tool attribution only where a court order, brief, or reporting on the matter states it explicitly; "unidentified" or "implied" means the record indicates AI use but does not name a specific product — we do not guess.

Outcome

Monetary Sanction (monetary penalty: 10000 USD.)

How Citation Safe would have caught this

Citation Safe runs three deterministic layers before a brief is filed: (1) does the citation exist against CourtListener's database of published opinions, (2) if quoted, does that exact language appear in the source, (3) does the cited case actually support the proposition it is cited for. Fabricated case citations fail Layer 1. Fabricated or misattributed quotations fail Layer 2 even when the underlying case is real. Misrepresented holdings — a real case cited for a proposition it does not support — are the target of Layer 3. None of these checks involve asking another language model whether the citation looks right; they are lookups and text-matches against the actual source, which is why a hallucinated citation has to survive a direct lookup against the authoritative source — not another model's opinion — to earn a VERIFIED stamp; our measured false-verify rate is published live at /quality.

Check a brief before you file it → · See our live false-verify rate

Source: https://www.damiencharlotin.com/documents/3113/Fay_et_al_v._Namou_et_al_USA_9_September_2026.pdf, via Damien Charlotin's public AI Hallucination Cases Database (CC0).

Source: https://www.damiencharlotin.com/documents/3113/Fay_et_al_v._Namou_et_al_USA_9_September_2026.pdf

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