Judicial authorities have enunciated the principles which are well pronounced in the case of Makun V. F.U.T. Minna (supra) wherein this court re-iterated that, for a plea of estoppel per rem judicatam to succeed, the party relying thereon must establish the following requirements or pre-conditions namely:- (a) That the parties or their privies are the same in both the previous and the present proceeding. (b) That the claim or issues in dispute in both actions are the same. (c) That the res or the subject matter of litigation in the two cases is the same. (d) That the decision relied upon to support the plea of estoppel per rem judicatam is valid, subsisting and final. (e) That the court that gave the previous decision relied upon to sustain the plea is a court of competent jurisdiction. It has also been held severally by this court that, unless all the above constitutional elements or requirements of the doctrine are fully established, the plea of estoppel per rem judicatam cannot sustain. See also the decisions in Yoye V. Olalode (1974) 10 SC 209; Alase V. Olori-Ilu (1965) NMLR 66; Fadiora V. Gbadebo (1978) 3 SC 219 and Udo V. Obot (1989) 1 SC (Pt. 1) 64.
— C.B. Ogunbiyi, JSC. Ogbolosingha v. B.S.I.E.C. (2015) – SC.165/2013