37 CFR § 2.117 - Suspension of proceedings.
(a) Whenever it shall come to the attention of the Trademark Trial and Appeal Board that a party or parties to a pending case are engaged in a civil action or another Board proceeding which may have a bearing on the case, proceedings before the Board may be suspended until termination of the civil action or the other Board proceeding.
(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.