Before a judgment of a court can qualify as an estoppel per rem judicata and in order to bind a party; the following conditions must be satisfied: a) The judgment must be valid and subsisting; b) the parties in that judgment must be the same as the parties (either by themselves or their privies) in the subsequent proceedings; c) the subject-matter must be the same; and d) the issue or cause (in issue estoppel or cause of action estoppel as the case may be decided in the earlier proceedings must have arisen again in the later proceedings.
— Adeyemo v. Ida & Ors. (1998) – CA/1/6/92