La. Stat. tit. 9 § 408
Current with operative changes from the 2024 Third Special Legislative Session
The child's mother, any man who would be presumed to be the father under Civil Code Article 185, and the biological father, if known, shall be joined in a filiation or paternity proceeding, except that joinder is not required of a person whose parental rights have been terminated, or who is deceased, or whose joinder is determined otherwise not to be feasible.
La. R.S. § 9:408