Caratti v Commissioner of the Australian Federal Police & Anor

The case of *Caratti v Commissioner of the Australian Federal Police & Anor* was heard in the High Court of Australia. The plaintiff, represented by Mr. D.F. Jackson, QC, sought orders for certiorari, mandamus, and prohibition against the Commissioner of the Australian Federal Police and the Federal Court of Australia. A key aspect of the plaintiff's application involved seeking an enlargement of time for bringing the certiorari and mandamus applications, which was contested by the first defendant.

The central legal issues before the Court concerned the nature of appeals by way of rehearing in the Federal Court, specifically the standards to be applied when reviewing a primary judge's decision. The plaintiff argued that the Full Court of the Federal Court had not conducted a true rehearing but had instead deferred to the primary judge's findings, particularly regarding the validity of search warrants. This raised the question of whether the Full Court had applied the correct legal criterion, which the plaintiff contended should have demanded a unique outcome rather than tolerating a range of outcomes, as is typical in discretionary matters.

The plaintiff's submissions focused on the interpretation of the Federal Court of Australia Act and relevant High Court decisions, such as *Western Australia v Ward* and *Minister for Immigration and Border Protection v SZVFW*. These authorities establish that appeals by way of rehearing involve a real review of the trial and the judge's reasons, with different standards applying to discretionary and non-discretionary issues. The plaintiff contended that the issue of the search warrants' validity was a non-discretionary matter where the Full Court should have formed its own view, and that the Full Court's reasons indicated a failure to do so, instead deferring to the primary judge's "value judgment" and conclusions that were "fairly open" to him. The plaintiff argued that the underlying issue concerning the search warrants was important and merited consideration by the Full Court.