Generally, proceedings before the Court of law can be regarded as a nullity where:- (a) The Court is not properly constituted as regards numbers and qualifications of the members of the bench. (b) The subject-matter of the action is not within the jurisdiction of the Court. (c) The case before the Court is not initiated by due process of law, or that there is a condition precedent to the exercise of jurisdiction. See MADUKOLU V NKEMDILIM, (1962)1 ALL N.L.R 587. — M.L. Shuaibu, JCA. Ekpo v GTB (2018) – CA/C/324/2013
ISSUE OF JURISDICTION CAN ONLY BE RAISED AT THE ARBITRATION PANEL
The law therefore is that although in the regular Courts, the issue of jurisdiction can be raised at all stages of the proceedings of a case; from the trial to the final appellate, where a statute prescribed the stage at which the issue is to be raised in the course of the proceedings of a case, the issue cannot be validly and properly raised at any other stage other than the one stipulated in the statute. The general principle applies only where there was no statutory provision as to the particular or specific stage of the proceedings of a case at which the issue of jurisdiction is to be raised by a party.
– Garba, JCA. Dunlop v. Gaslink (2018)