818.02(a) Election By Originally Presented Claims [R-07.2015]
Where claims to another invention are properly added and entered in the application before the earlier of the mailing of a first restriction requirement or the mailing of a first Office action on the merits, those claims, along with the ones presented upon filing the application, will be considered originally presented claims for purposes of restriction only.
The claims originally presented and acted upon by the Office on their merits determine the invention elected by an applicant in the application, and in any request for continued examination (RCE) filed for the application. Subsequently presented claims to an invention other than that acted upon should be treated as provided in MPEP § 821.03.
For reissue practice, see MPEP Chapter 1400.