37 CFR § 2.116 - Federal Rules of Civil Procedure.
(a) Except as otherwise provided, and wherever applicable and appropriate, procedure and practice in inter partes proceedings shall be governed by the Federal Rules of Civil Procedure.
(b) The opposer in an opposition proceeding or the petitioner in a cancellation proceeding shall be in the position of plaintiff, and the applicant in an opposition proceeding or the respondent in a cancellation proceeding shall be in the position of defendant. A party that is a junior party in an interference proceeding or in a concurrent use registration proceeding shall be in the position of plaintiff against every party that is senior, and the party that is a senior party in an interference proceeding or in a concurrent use registration proceeding shall be a defendant against every party that is junior.
(c) The notice of opposition or the petition for cancellation and the answer correspond to the complaint and answer in a court proceeding.
(d) The assignment of testimony periods corresponds to setting a case for trial in court proceedings.
(e) The submission of notices of reliance, declarations and affidavits, as well as the taking of depositions, during the assigned testimony periods correspond to the trial in court proceedings.
(f) Oral hearing, if requested, of arguments on the record and merits corresponds to oral summation in court proceedings.
(g) The Trademark Trial and Appeal Board's standard protective order is automatically imposed in all inter partes proceedings unless the parties, by stipulation approved by the Board, agree to an alternative order, or a motion by a party to use an alternative order is granted by the Board. The standard protective order is available at the Office's Web site. No material disclosed or produced by a party, presented at trial, or filed with the Board, including motions or briefs which discuss such material, shall be treated as confidential or shielded from public view unless designated as protected under the Board's standard protective order, or under an alternative order stipulated to by the parties and approved by the Board, or under an order submitted by motion of a party granted by the Board. The Board may treat as not confidential that material which cannot reasonably be considered confidential, notwithstanding a designation as such by a party.