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Jorgensen v JML Rose Pty Ltd (Security for Costs)

Court
Federal Court of Australia
Jurisdiction
Australia
Decided
2026-02-09
AI tool
Implied
Outcome
Order for security for costs
Monetary penalty
None reported

What was hallucinated

Fabricated: Case Law | Appellant relied on AI-generated references that included non-existent authorities; JML relied on Wheatley J's prior finding of such AI use to argue increased costs. || Misrepresented: Case Law | Appellant relied on authorities produced or cited that did not support the propositions for which they were cited; Court noted earlier discussion of this issue in JML Rose Pty Ltd v Jorgensen (No 3) [2025] FCA 976.

Sanction teardown · Federal Court of Australia, Australia · 2026-02-09

Jorgensen v JML Rose Pty Ltd (Security for Costs)

What happened

In Federal Court of Australia, Australia, 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)
    Appellant relied on AI-generated references that included non-existent authorities; JML relied on Wheatley J's prior finding of such AI use to argue increased costs.
  • Misrepresented (Case Law)
    Appellant relied on authorities produced or cited that did not support the propositions for which they were cited; Court noted earlier discussion of this issue in JML Rose Pty Ltd v Jorgensen (No 3) [2025] FCA 976.

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

Order for security for costs

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/1849/Jorgensen_v_JML_Rose_Pty_Ltd_Security_for_Costs_2026_FCA_64_9_February_2026.pdf, via Damien Charlotin's public AI Hallucination Cases Database (CC0).

Source: https://www.damiencharlotin.com/documents/1849/Jorgensen_v_JML_Rose_Pty_Ltd_Security_for_Costs_2026_FCA_64_9_February_2026.pdf

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