In civil law countries, possession is not a right but a (legal) fact which enjoys certain protection by the law. It can provide evidence of ownership but it does not in itself satisfy the burden of proof. For example, ownership of a house is never proven by mere possession of a house. Possession is a factual state of exercising control over an object, whether owning the object or not. Only a legal (possessor has legal ground), bona fide (possessor does not know he has no right to possess) and regular possession (not acquired through force or by deceit) can become ownership over passage of time. A possessor enjoys certain judicial protection against third parties even if he is not the owner.