>RULE45
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Rule 45. Subpoena
(a) In General.
(1) Form and Contents.
(A) Requirements—In General. Every subpoena must:
(i) state the court from which it issued;
(ii) state the title of the action and its civil-action number;
(iii) command each person to whom it is directed to do the following at a specified time and place: attend and testify; produce designated documents, electronically stored information, or tangible things in that person's possession, custody, or control; or permit the inspection of premises; and
(iv) set out the text of Rule 45(d) and (e).
(B) Command to Attend a Deposition—Notice of the Recording Method. A subpoena commanding attendance at a deposition must state the method for recording the testimony.
(C) Combining or Separating a Command to Produce or to Permit Inspection; Specifying the Form for Electronically Stored Information. A command to produce documents, electronically stored information, or tangible things or to permit the inspection of premises may be included in a subpoena commanding attendance at a deposition, hearing, or trial, or may be set out in a separate subpoena. A subpoena may specify the form or forms in which electronically stored information is to be produced.
(D) Command to Produce; Included Obligations. A command in a subpoena to produce documents, electronically stored information, or tangible things requires the responding person to permit inspection, copying, testing, or sampling of the materials.
(2) Issuing Court. A subpoena must issue from the court where the action is pending.
(3) Issued by Whom. The clerk must issue a subpoena, signed but otherwise in blank, to a party who requests it. That party must complete it before service. An attorney also may issue and sign a subpoena if the attorney is authorized to practice in the issuing court.
(4) Notice to Other Parties Before Service. If the subpoena commands the production of documents, electronically stored information, or tangible things or the inspection of premises before trial, then before it is served on the person to whom it is directed, a notice and a copy of the subpoena must be served on each party.
(b) Service.
(1) By Whom and How; Tendering Fees. Any person who is at least 18 years old and not a party may serve a subpoena. Serving a subpoena requires delivering a copy to the named person and, if the subpoena requires that person's attendance, tendering the fees for 1 day's attendance and the mileage allowed by law. Fees and mileage need not be tendered when the subpoena issues on behalf of the United States or any of its officers or agencies.
(2) Service in the United States. A subpoena may be served at any place within the United States.
(3) Service in a Foreign Country. 28 U.S.C. §1783 governs issuing and serving a subpoena directed to a United States national or resident who is in a foreign country.
(4) Proof of Service. Proving service, when necessary, requires filing with the issuing court a statement showing the date and manner of service and the names of the persons served. The statement must be certified by the server.
https://www.law.cornell.edu/rules/frcp/rule_45