An agent acting without authority because he never was an agent, or acting beyond the authority granted by the principal, or due to the termination of the agency, or because the agency relationship is null and void, produces several problems. In this work we will analyze the relationship between an agent acting without authority with the statutory rule of article 1,815 of the Civil Code, that states the validity of the sales by the non-owner, without prejudice of the rights of the truly owner.
