Federal Rules of Criminal Procedure - Rule 49. Serving and Filing Papers
(a) When Required.
A party must serve on every other party any written motion (other than one to be heard ex parte), written notice, designation of the record on appeal, or similar paper.
(b) How Made.
Service must be made in the manner provided for a civil action. When these rules or a court order requires or permits service on a party represented by an attorney, service must be made on the attorney instead of the party, unless the court orders otherwise.
(c) Notice of a Court Order.
When the court issues an order on any post-arraignment motion, the clerk must provide notice in a manner provided for in a civil action. Except as Federal Rule of Appellate Procedure 4(b) provides otherwise, the clerk's failure to give notice does not affect the time to appeal, or relieve -- or authorize the court to relieve -- a party's failure to appeal within the allowed time.
A party must file with the court a copy of any paper the party is required to serve. A paper must be filed in a manner provided for in a civil action.