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Vechtel et al. v. Gershoni

Court
Israel
Jurisdiction
Israel
Decided
2025-05-25
AI tool
Implied
Outcome
Motion denied
Monetary penalty
None reported

What was hallucinated

False Quotes: Case Law | The motion included a purported quote from a judgment authored by the presiding judge; the court states that quote does not appear in that judgment. || Misrepresented: Case Law | The motion attributed legal determinations about amendment of pleadings to that judgment; the court notes the judgment did not address amendment of pleadings at all.

Details

The judge pointed out that the plaintiffs' written request included what appeared to be a direct quote from one of her own previous judgments. However, upon examination, she found that not only did this quote not exist in the cited judgment, but the judgment itself did not even address the legal question at stake.

Sanction teardown · Israel, Israel · 2025-05-25

Vechtel et al. v. Gershoni

What happened

In Israel, Israel, 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:

  • False Quotes (Case Law)
    The motion included a purported quote from a judgment authored by the presiding judge; the court states that quote does not appear in that judgment.
  • Misrepresented (Case Law)
    The motion attributed legal determinations about amendment of pleadings to that judgment; the court notes the judgment did not address amendment of pleadings at all.

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

Motion denied

Additional detail

The judge pointed out that the plaintiffs' written request included what appeared to be a direct quote from one of her own previous judgments. However, upon examination, she found that not only did this quote not exist in the cited judgment, but the judgment itself did not even address the legal question at stake.

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/450/Vechtel_et_al._v._Gershoni_Israel_May_25_2025.pdf, via Damien Charlotin's public AI Hallucination Cases Database (CC0).

Source: https://www.damiencharlotin.com/documents/450/Vechtel_et_al._v._Gershoni_Israel_May_25_2025.pdf

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