37 C.F.R. § 7.30 Effect of cancellation or expiration of international registration.
Title 37 - Patents, Trademarks, and Copyrights
When the International Bureau notifies the Office of the cancellation or expiration of an international registration, in whole or in part, the Office shall cancel, in whole or in part, the corresponding pending or registered extension of protection to the United States. The date of cancellation of an extension of protection or relevant part shall be the date of cancellation or expiration of the corresponding international registration or relevant part.
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
§ 7.30 Effect of cancellation or expiration of international registration.