A party may move to stay issuance of the mandate pending the United States Supreme Court's disposition of a petition for writ of certiorari. The motion must state the grounds for the petition and the circumstances requiring the stay. The appellate court authorized to issue the mandate may grant a stay if it finds that the grounds are substantial and that the petitioner or others would incur serious hardship from the mandate's issuance if the United States Supreme Court were later to reverse the judgment. In a criminal case, the stay will last for no more than 90 days, to permit the timely filing of a petition for writ of certiorari. After that period and others mentioned in this rule expire, the mandate will issue.