'[A] court which is endowed with a particular jurisdiction has powers which are necessary to enable it to act effectively within such jurisdiction…. A court must enjoy such powers in order to enforce its rules of practice and to suppress any abuses of its process and to defeat any attempted thwarting of its process.' "
At 519, their Honours said:
"If…a stay is sought to stop a prosecution which has been instituted and maintained for an improper purpose, it by no means follows that it is necessary, before granting a stay, for the court to satisfy itself in such a case that an unfair trial will ensue unless the prosecution is stopped. There are some policy considerations which support the view that the Court should so satisfy itself. It is of fundamental importance that, unless the interests of justice demand it, courts should exercise, rather than refrain from exercising, their jurisdiction, especially their jurisdiction to try persons charged with criminal offences, and that persons charged with such offences should not obtain an immunity from prosecution. It is equally important that freedom of access to the court should be preserved and that litigation of the principal proceeding, whether it be criminal or civil, should not become a vehicle for abuse of process issues on an application for a stay, unless once again the interests of justice demand it."
At 520, speaking of the fundamental policy considerations which must be taken into account, their Honours said:
"The first is that the public interest in the administration of justice requires that the court protect its ability to function as a court of law by ensuring that its processes are used fairly by State and citizen alike. The second is that, unless the court protects its ability so to function in that way, its failure will lead to an erosion of public confidence by reason of concern that the court's processes may lend themselves to oppression and injustice."
23 In this particular appeal, what Mrs Slater is seeking to achieve is relief which the Full Court of the Federal Court in 1997 held was not within the power of the Supreme Court to grant. It seems to me that these proceedings are being used for an improper purpose and that the Court ought not be party to, or condone in any way, the prosecution of these proceedings for that purpose.
24 There is a further basis upon which, in my opinion, these proceedings are an abuse of process, and that is simply that they are doomed to fail. In my opinion, therefore, this appeal should be dismissed as an abuse of process.
25 I accept that there are important questions involved in the reasons for judgment of Finn J. They include: are judges of the Supreme Court of the Australian Capital Territory officers of the Commonwealth? Even if they are officers of the Commonwealth for the purposes of s 39B of the Judiciary Act 1903, can the Federal Court direct mandamus to a court of co-ordinate jurisdiction? Thirdly, is the matter in which mandamus is sought a matter "arising under a law of the Commonwealth" so as to bring the matter within the jurisdiction of the Federal Court, pursuant to s 39 of the Judiciary Act?
26 These questions were addressed by Finn J. For my own part, on the present state of the law, I see no error in the answers which his Honour gave, but it is not necessary for this court to go that far for the purpose of dismissing the appeal. I prefer to dismiss the appeal on the basis that it is a clear abuse of process. For the reasons which I have attempted to express, I would dismiss the appeal.
HIGGINS J:
27 I would also dismiss the appeal and I agree with the reasons given by the learned presiding judge. I would add only this: the contention that there is an undisclosed, unexecuted order for property settlement arising from a reserved judgment, undisclosed until November 1997, made apparently without any application or request for it, or without hearing any evidence from any party, would be rejected in any event as being not only fanciful but obviously fictitious. It is, unsurprisingly, supported by no credible evidence. In any event it was the subject of an inquiry in proceedings before Bell J in the Family Court of Australia on 12 January 1998, where his Honour found no support for that contention either. I would also, as I have said, dismiss this appeal.
WEINBERG J:
28 I also agree that the reasons given by the learned presiding judge at this appeal should be dismissed as an abuse of process. I would add only that, in my view, as the authorities stand, this appeal involves an abuse of process also because it is clearly foredoomed to fail, to use the language of the High Court in Walton v Gardener (1992-1993) 177 CLR at 378.