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Courts on AI / evidence

DunGud Pty Ltd v Peachbulk Pty Ltd

Australia Trade Marks Office · Australia · · [2026] ATMO 154

No weight givenAcknowledged AI output tenderedchat-outputoffered by applicantchallenge: weight

A party offered ChatGPT and Gemini responses on product classification and markets in a trademark opposition. The hearing officer rejected treating chatbot outputs like dictionary or encyclopaedic evidence because sources, relevance to Australia, currency, and accuracy could not be interrogated.

Rules cited: Trade Marks Act 1995 (Cth)

The court's finding, in its words

Responses to very particularly worded questions, produced by AI chatbots, are not in and of themselves evidence of a fact.

Short verbatim extract (≤25 words) for identification; the judgment is linked below and is the record.

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