Article 372 of the French Civil Code
The father and mother exercise parental authority jointly. Parental authority is exercised jointly in the case provided for in article 342-11. However, where parentage is established with regard to one of them more than one year after the birth of a child whose parentage is already established with regard to the other, the latter remains solely vested with the exercise of parental authority. The same applies when filiation is judicially…