Section 78 of the Competition and Consumer Act 2010 (Cth) does not confer a broad immunity from criminal prosecution for conduct that happens to fall within Part IV. The immunity is confined to offences whose elements are, at least in substance, the same as the elements of a contravention or ancillary contravention of Part IV. Accordingly, persons whose conduct constitutes both a Part IV contravention and a separate criminal offence (such as blackmail, threats to kill, or using obscene language) may be prosecuted for the criminal offence. The question whether s 78 immunity applies where a Part IV contravention is relied upon as part of proving a criminal case was left open.
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