37 CFR § 42.25
Default filing times
November 5, 2020
(a) A motion may only be filed according to a schedule set by the Board. The default times for acting are:
(1) An opposition is due one month after service of the motion; and
(2) A reply is due one month after service of the opposition.
(b) A party should seek relief promptly after the need for relief is identified. Delay in seeking relief may justify a denial of relief sought.