Juridical Act – Act under private signature
Art. 1837. Act under private signature. An act under private signature need not be written by the parties, but must be signed by them.
Art. 1838. Party must acknowledge or deny signature. A party against whom an act under private signature is asserted must acknowledge his signature or deny that it is his. In case of denial, any means of proof may be used to establish that the signature belongs to that party.
Art. 1834. Act that fails to be authentic. An act that fails to be authentic because of the lack of competence or capacity of the notary public, or because of a defect of form, may still be valid as an act under private signature.