Minn. R. Civ. App. P. 143.02
If any party dies while an appeal is pending in the appellate court, the surviving party or the legal representative or successor in interest of the deceased party, shall file with the clerk of the appellate courts an affidavit showing the death and the name and address of the legal representative or successor in interest by or against whom the appeal shall thereafter proceed. If the deceased party has no representative, any party may inform the clerk of the appellate courts of the death and proceedings shall then be had as the appellate court may direct. If a party against whom an appeal may be taken dies after the entry of a judgment or an order in the trial court but before a notice of appeal is filed, an appellant may proceed as if the death had not occurred. If a party entitled to appeal dies before filing a notice of appeal, the notice of appeal may be filed by the decedent's personal representative or, if there is no personal representative, by the attorney of record within the time prescribed by these rules. After the notice of appeal is filed, substitution shall be effected in the appellate court in accordance with this rule.
Minn. R. Civ. App. P. 143.02