TMEP § 711.02
In most cases, the period to respond to an Office action runs from the issuance date of the Office action. In some situations, the examining attorney’s Office action does not re-start the beginning of a new response period. For example, a notice that an applicant’s response was incomplete (see TMEP §718.03), or a notice that an applicant’s request for reconsideration of a final action fails to overcome a refusal or satisfy an outstanding requirement (see TMEP §715.03(c)), does not begin a new response period. In all cases in which the response period runs from the date of a previous Office action, the examining attorney must include a statement to that effect in the Office action, and must omit the response clause.