12 CFR § 308.525 - Form, filing, and service of papers.
(1) Documents filed with the ALJ must include an original and two copies.
(2) Every pleading and paper filed in the proceeding must contain a caption setting forth the title of the action, the case number assigned by the ALJ, and a designation of the paper (e.g., motion to quash subpoena).
(3) Every pleading and paper must be signed by, and must contain the address and telephone number of the party or the person on whose behalf the paper was filed, or his or her representative.
(4) Papers are considered filed when they are mailed by certified or registered mail. Date of mailing may be established by a certificate from the party or its representative or by proof that the document was sent by certified or registered mail.
(b) Service. A party filing a document with the ALJ must, at the time of filing, serve a copy of such document on every other party. Service upon any party of any document other than those required to be served as prescribed in § 308.507 of this subpart must be made by delivering a copy or by placing a copy of the document in the United States mail, postage prepaid, and addressed to the party's last known address. When a party is represented by a representative, service must be made upon such representative in lieu of the actual party. The ALJ may authorize facsimile transmission as an acceptable form of service.
(c) Proof of service. A certificate by the individual serving the document by personal delivery or by mail, setting forth the manner of service, will be proof of service.