37 CFR § 2.117 - Suspension of proceedings.
(a) Whenever it shall come to the attention of the Trademark Trial and Appeal Board that a civil action, another Board proceeding, or an expungement or reexamination proceeding may have a bearing on a pending case, proceedings before the Board may be suspended until termination of the civil action, the other Board proceeding, or the expungement or reexamination proceeding. A civil action or proceeding is not considered to have been terminated until an order or ruling that ends litigation has been rendered and noticed and the time for any appeal or other further review has expired with no further review sought.
(b) Whenever there is pending before the Board both a motion to suspend and a motion which is potentially dispositive of the case, the potentially dispositive motion may be decided before the question of suspension is considered regardless of the order in which the motions were filed.
(c) Proceedings may also be suspended sua sponte by the Board, or, for good cause, upon motion or a stipulation of the parties approved by the Board. Many consented or stipulated motions to suspend are suitable for automatic approval by ESTTA, but the Board retains discretion to condition approval on the party or parties providing necessary information about the status of settlement talks, discovery activities, or trial activities, as may be appropriate.