LEGAL PRINCIPLE: CIVIL PROCEDURE — Res Judicata — Issue Estoppel — Effect on Claims Founded on Determined Issues
PRINCIPLE STATEMENT
The plaintiffs' claims for forfeiture which is founded on the alleged customary tenancy and damages for trespass which is based on their ownership and possession of the said land are caught by the issue estoppel pleaded by the defendants in the present proceedings.
RATIO DECIDENDI (SOURCE)
Per Iguh, JSC Oshodi v. Eyifunmi (2000) NLC-531995(SC) at p. 53; Paras. A–B.
"The plaintiffs' claims for forfeiture which is founded on the alleged customary tenancy and damages for trespass which is based on their ownership and possession of the said land are caught by the issue estoppel pleaded by the defendants in the present proceedings."
EXPLANATION / SCOPE
Where a claim depends on establishing a foundational fact or status—such as customary tenancy for forfeiture, or ownership for trespass—and that foundational issue has been previously determined against the claimant, issue estoppel precludes the entire claim. Even if the present claims are formally different (forfeiture vs. trespass), they are “caught” by estoppel because they rest on issues already litigated and lost. This illustrates the broad reach of issue estoppel: it bars not only the identical claim but any claim whose success hinges on a previously determined adverse issue.