Res nulis

Res nullius is a Latin term derived from Roman law whereby res (objects in the legal sense, anything that can be owned, even slaves, but not subjects in law such as citizens) are not yet the object of rights of any specific subject. Such items are considered ownerless property and are usually free to be owned. Examples of res nullius in the socio-economic sphere are wild animals or abandoned property. Finding can also be a means of occupation (i.e. vesting ownership), since a thing completely lost or abandoned is res nullius, and therefore belonged to the first taker. Specific legislation may be made, e.g. for beachcombing.
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Res nullius (la chose de personne) est une expression latine utilisée en droit civil (droit des biens) qui désigne une chose sans maître, c'est-à-dire qui n’a pas de propriétaire mais qui est néanmoins appropriable.
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Nobody’s property