In agreement with the learned Senior Counsel’s argument in respect of the rules/requirements for the doctrine of res judicata, it is necessary to outline the conditions for application of estoppel per rem judicatum. For the plea of estoppel per rem judicatum the following must be established: 1. The Parties or their privies are the same in both the previous and present proceedings; 2. The claim or issue in dispute in both actions is the same; 3. That the res or the subject matter of the litigation in the two cases is the same; 4. That the decision relied upon to support the plea of estoppel per rem judicatam is valid, subsisting and final; and 5. That the Court that gave the previous decision relied upon to sustain the plea is a Court of competent jurisdiction.
– Nwaoma Uwa, JCA. NOGA v. NICON (2007)