An application that includes section 1(a) of the Trademark Act as a filing basis, or for which an acceptable allegation of use under § 2.76 or § 2.88 has been filed, may be amended to an application for concurrent use registration, provided that the application as amended meets the requirements of § 2.42 . The trademark examining attorney will determine whether the application, as amended, is acceptable.
37 C.F.R. §2.73
Part 3 pertaining to both patents and trademarks is placed in the grouping pertaining to patents regulations.
Part 4 is placed in the separate grouping of parts pertaining to patents regulations.
Part 5 is placed in the separate grouping of parts pertaining to patents regulations.