37 CFR § 1.134
Time period for reply to an Office action
November 5, 2020
An Office action will notify the applicant of any non-statutory or shortened statutory time period set for reply to an Office action. Unless the applicant is notified in writing that a reply is required in less than six months, a maximum period of six months is allowed.
[62 FR 53194, Oct. 10, 1997]