Article 486. Conversion of the type of the possession
(1) A limited-right-possession, once proven, is presumed to have been maintained until evidence is made of its conversion in owner-possession, in one of the following situations:
a) a limited-right-possessor becomes entitled to acquire ownership from a person other than the owner of the property, and the possessor was not aware and ought not reasonably have been aware that such transferror is not an owner;
b) a limited-right-possessor commits, as against the owner-possessor, acts of resistance expressing the intent to act as if the owner; in this case, the conversion will not occur before the expiration of the time limit for return of the property.
(2) The provisions of paragraph (1) apply mutatis mutandis to the agent-possessor which converted its physical control into owner-possession.