Minn. R. Adop. P. 21.01
Subd. 1. Child. A child younger than age ten (10) who is the subject of the adoption matter has the right to intervene as a party at any point in the proceeding.
Subd. 2. Indian Tribe. In any adoption matter relating to an Indian child, if the child's Indian tribe is not already a party pursuant to Rule 20.01(g), the child's tribe has the right to intervene as a party at any point in the proceeding.
Subd. 3. Local Social Services Agency. The local social services agency has the right to intervene as a party at any point in the proceeding.
Subd. 4. Procedure. A child younger than age ten (10), the child's Indian tribe, or the local social services agency may intervene as a party by filing with the court and serving upon the parties a notice of intervention as a matter of right. The notice of intervention form shall be available from the court administrator. The intervention shall be deemed accomplished upon service of the notice of intervention, unless a party files and serves a written objection within ten (10) days of the date of service.
Minn. R. Adop. P. 21.01