In A.G. Kwara State & Anor v Saka Adeyemo & Ors (2016) 7 SC (Pt.II) p. 149. I said that: Jurisdiction is a question of law. There are two types of jurisdiction. 1. Jurisdiction as a matter of procedural law. 2. Jurisdiction as a matter of substantive law. A litigant may waive the former. Again in Appeal No: SC.175/2005 Heritage Bank Ltd v Bentworth Finance (Nigeria) Ltd decided by this Court on 23 February, 2018 Eko J.S.C. explained the distinction between substantive jurisdiction and procedural jurisdiction.
JURISDICTION CAN BE RAISED AT ANYTIME BY THE COURT
The law is well settled that the issue of jurisdiction is so fundamental to adjudication that it can be raised at any stage of the proceedings and even for the first time on appeal to this court. See Usman Dan Fodio University v. Kraus Thompson Ltd (2001) 15 NWLR (Pt. 736) 305; Elabanjo v. Dawodu (2006) All FWLR (Pt. 328) 604, (2006) 15 NWLR (Pt. 1001) 76 115-116 G-A ; PDP v. Okorocha (2012) All FWLR (Pt. 626) 449, (2012) 15 NWLR (Pt. 1323) 205. The issues are therefore competent before this court.
— Kekere-Ekun, JSC. Nyesom v. Peterside (SC.1002/2015 (REASONS), 12 Feb 2016)