15 U.S.C. § 1095 : US Code - Section 1095: Registration on principal register not precluded

Search 15 U.S.C. § 1095 : US Code - Section 1095: Registration on principal register not precluded

Registration of a mark on the supplemental register, or under the
Act of March 19, 1920, shall not preclude registration by the
registrant on the principal register established by this chapter.
Registration of a mark on the supplemental register shall not
constitute an admission that the mark has not acquired
distinctiveness.