37 C.F.R. § 7.29 Effect of replacement on U.S. registration.
Title 37 - Patents, Trademarks, and Copyrights
A U.S. registration that has been replaced by a registered extension of protection under section 74 of the Act and §7.28 will remain in force, unless cancelled, expired or surrendered, as long as: (a) The owner of the replaced U.S. registration continues to file affidavits or declarations of use in commerce or excusable nonuse under section 8 of the Act; and (b) The replaced U.S. registration is renewed under section 9 of the Act.
Title 37: Patents, Trademarks, and Copyrights
PART 7—RULES OF PRACTICE IN FILINGS PURSUANT TO THE PROTOCOL RELATING TO THE MADRID AGREEMENT CONCERNING THE INTERNATIONAL REGISTRATION OF MARKS
Subpart E—Extension of Protection to the United States
§ 7.29 Effect of replacement on U.S. registration.
