806.03(e) Allegation of Use Required to Amend From §1(b) to §1(a)
An applicant who claims a §1(b) basis for any or all of the goods or services may not amend the application to seek registration under §1(a) of the Act for those goods or services, unless the applicant files an allegation of use. 37 C.F.R. §2.35(b)(8). See TMEP §§1103, 1104–1104.11, and 1109–1109.18 regarding allegations of use.