If this principle be not observed, the person affected is entitled, ex debito justitiae, to have any determination which affects him set aside; and a court which finds that it has been led to purport to determine a matter in which there has been a failure to observe the principle has inherent jurisdiction to set its determination aside In such a case there has been no valid trial at all. The setting aside of the invalid determination lays the ghost of the simulacrum of a trial, and leaves the field open for a real trial
He added [10] , that "in the absence of clear words, a statute should not be treated as depriving a court of the inherent jurisdiction possessed by every court to ensure that trials before it are conducted in accordance with the principles of natural justice". He held [11] , that the Federal Court of Bankruptcy was a superior court, and that a decision of a superior court cannot be treated as a nullity, but is, at worst, voidable, i.e., valid unless and until it is set aside. He criticized the judgment of Lord Greene M.R. in Craig v. Kanssen [12] , although he agreed with the conclusion reached in that case, where the court, exercising its inherent jurisdiction, set aside an order made against a party who should have been served, but who was not served, with process. However, Lord Greene M.R. referred to such an order as a nullity; Rich J. said (20) that this was true enough in the case of an inferior court, but misleading since the order in question was made by a superior court - "in the case of a superior court the distinction is between irregularities so fundamental as to create an unconditional right, ex debito justitiae, to have the judgment set aside, and non-fundamental irregularities as to which the court has a discretion". McTiernan J. was of a similar opinion to Rich J. [13] . Williams J., who dissented for reasons which do not concern us, also said [14] that a court has an inherent power to set aside an order which has been made against a person without that person having notice of the application. It is unnecessary to consider whether the criticism voiced by Rich J. of the language of Lord Greene M.R. in Craig v. Kanssen is justified. It is clear that the majority of the Court in Cameron v. Cole accepted that a court, whether superior or inferior, has inherent power to set aside an order made against a person who did not have a reasonable opportunity to appear and present his case. It seems immaterial in the present case whether the Family Court is regarded as a superior court or an inferior court. It is declared by s. 21 (2) of the Family Law Act to be a superior court of record, but it is of course a superior court of limited jurisdiction. In that respect it occupies a similar position to the Federal Court of Bankruptcy considered in Cameron v. Cole. No provision of the Family Law Act deprives the Family Court of this inherent power, except, perhaps in relation to a decree of dissolution of marriage (see ss. 55-59) - a question which I need not consider in the present case.
1. (1944) 68 C.L.R. 571.
2. (1944) 68 C.L.R., at pp. 583-586.
3. (1944) 68 C.L.R., at p. 586.
4. (1944) 68 C.L.R., at p. 589.
5. (1944) 68 C.L.R., at p. 589.
6. (1944) 68 C.L.R., at pp. 590-591.
7. [1943] K.B. 256, at p. 262.
8. (1944) 68 C.L.R., at pp. 598-600.
9. (1944) 68 C.L.R., at p. 607.