Service of an originating process, such as the writ of summons, originating summons, notice of appeal, etc, is fundamental and goes to the root of the competence of the Court to adjudicate. Where an originating process has not been served on the adverse party, the non-service vitiates the entire proceedings and any orders made therein. The premise for this proposition is that a party to a proceeding should know or be aware that there is a case against him in order to afford him adequate opportunity to defend himself if he desires to do so.
– A. Aboki JSC. Odey v. Alaga (2021) – SC.9/2021