A case in which the Court resolved a circuit split by holding that the Ninth Circuit erred when it ruled that equitable exceptions apply to mandatory claim-processing rules such as Federal Rule of Civil Procedure 23(f), which sets a 14-day deadline to file a petition for permission to appeal an order granting or denying class-action certification, and can excuse a party’s failure to file timely within the deadline established by Federal Rule of Civil Procedure 23(f).