PRINCIPLE STATEMENT

The law is firmly established that a trespasser in possession is not in legal or legitimate possession; an appellant's interest in land, if any, if it was in trespass, cannot be protected by law.

RATIO DECIDENDI (SOURCE)

Per Onu, JSC, in Aboyeji v. Momoh (1994) NLC-2921990(SC) at p. 15; Paras B--E.
"The law is firmly established that a trespasser in possession is not in legal or legitimate possession. ... The appellant's interest in the land in dispute, if any, was therefore in trespass and such cannot be protected by law."
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EXPLANATION / SCOPE

Trespass to land requires lawful possession or title. A trespasser (person without legal right to possess) cannot sue for trespass—their possession is unlawful and receives no legal protection. The principle: possession must be lawful to ground trespass actions; trespassers cannot invoke law to protect wrongful possession. This prevents: trespassers from using courts to legitimize illegal possession; conflicting trespass claims between multiple wrongdoers; abuse of trespass actions by those lacking rights. However, even wrongful possessors can sue: those with lesser rights (another trespasser without better title); for conversion (personal property taken from the land). But against rightful owners or those with superior title, trespassers have no standing. The law protects possession only when that possession is lawful or at least not clearly wrongful. This ensures trespass actions serve their purpose—protecting legitimate possession—rather than facilitating wrongful holding.

CASES APPLYING THIS PRINCIPLE