37 CFR § 11.41 - Filing of papers.
(a) The provisions of §§ 1.8 and 2.197 of this chapter do not apply to disciplinary proceedings. All papers filed after the complaint and prior to entry of an initial decision by the hearing officer shall be filed with the hearing officer at an address or place designated by the hearing officer. The term “filed” means the delivery, mailing, or electronic transmission of a document to a hearing officer or designee in connection with a disciplinary complaint or related matter.
(b) All papers filed after entry of an initial decision by the hearing officer shall be filed with the USPTO Director. A copy of the paper shall be served on the OED Director. The hearing officer or the OED Director may provide for filing papers and other matters by hand, by Priority Mail Express®, or by other means.