Minn. Stat. § 257.541
The biological mother of a child born to a mother who was not married to the child's father when the child was born and was not married to the child's father when the child was conceived has sole custody of the child until paternity has been established under sections 257.51 to 257.74, or until custody is determined in a separate proceeding under section 518.156.
If paternity has been recognized under section 257.75, the father may petition for rights of parenting time or custody in an independent action under section 518.156. The proceeding must be treated as an initial determination of custody under section 518.17. The provisions of chapter 518 apply with respect to the granting of custody and parenting time. An action to determine custody and parenting time may be commenced pursuant to chapter 518 without an adjudication of parentage. These proceedings may not be combined with any proceeding under chapter 518B.
Minn. Stat. § 257.541
1983 c 308 s 3; 1987 c 403 art 3 s 96; 1990 c 574 s 3; 1Sp1993 c 1 art 6 s 34; 2000 c 444 art 2 s 6