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Haddadi et al. v. Soleimani et al., 2026 ONSC 3920

Court
DC Ontario
Jurisdiction
Canada
Decided
2026-07-17
AI tool
Implied
Outcome
No award of costs as sanctio
Monetary penalty
None reported

What was hallucinated

Fabricated: Legal Norm | Respondents cited a non-existent rule r.61.09(1)(d) of the Rules of Civil Procedure; court found no such provision and noted s.131(1) CJA governs costs. || Fabricated: Case Law | Respondents cited a non-existent case 'Cimpan v. Koliniotis, 2018 ONCA 95'; court searched CanLII/Westlaw/Lexis and found no such case and that 2018 ONCA 95 is actually Turtle Creek Landscape Inc. v. Summit Auto Brokers Inc.

Sanction teardown · DC Ontario, Canada · 2026-07-17

Haddadi et al. v. Soleimani et al., 2026 ONSC 3920

What happened

In DC Ontario, Canada, 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 (Legal Norm)
    Respondents cited a non-existent rule r.61.09(1)(d) of the Rules of Civil Procedure; court found no such provision and noted s.131(1) CJA governs costs.
  • Fabricated (Case Law)
    Respondents cited a non-existent case 'Cimpan v. Koliniotis, 2018 ONCA 95'; court searched CanLII/Westlaw/Lexis and found no such case and that 2018 ONCA 95 is actually Turtle Creek Landscape Inc. v. Summit Auto Brokers Inc.

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

No award of costs as sanctio

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/2696/Haddadi-et-al.-v.-Soleimani-et-al.-2026-ONSC-3920.pdf, via Damien Charlotin's public AI Hallucination Cases Database (CC0).

Source: https://www.damiencharlotin.com/documents/2696/Haddadi-et-al.-v.-Soleimani-et-al.-2026-ONSC-3920.pdf

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