Minnesota Affidavit of Service Notice of Intervention as a Party as a Matter of Right is a legal document used in the state of Minnesota to register a party's intervention as a matter of right in a legal action. This document must be filed with the court clerk in order to officially intervene in a legal action. There are two types of Minnesota Affidavit of Service Notice of Intervention as a Party as a Matter of Right: voluntary intervention and compulsory intervention. Voluntary intervention is when a party files a motion to intervene in an existing lawsuit, which must be approved by the court. Compulsory intervention is when a party is automatically granted the right to intervene in an existing lawsuit, such as an heir in an estate action. The Minnesota Affidavit of Service Notice of Intervention as a Party as a Matter of Right must be signed under oath, include the name of the court, the case number, the name of the party intervening, the reason for the intervention, and the signature of the affine.