Civil Act — Article 450 (Requisite for setting up assignment of nominative claim against obligor)

(1) The assignment of a nominative claim cannot be set up against the obligor or any other third person, unless the assigner has given notice thereof to obligor or the obligor has consented thereto.

(2) The notice or consent mentioned in the preceding paragraph cannot be set up against a third person other than the obligor, unless it is put in writing with a certified fixed date.