Code of Federal Regulations Title 37. Patents, Trademarks, and Copyrights § 37.1.1070 Notification of Invalidation

(a) Where a design patent that was granted from an international design application is invalidated in the United States, and the invalidation is no longer subject to any review or appeal, the patentee shall inform the Office.

(b) After receiving a notification of invalidation under paragraph (a) of this section or through other means, the Office will notify the International Bureau in accordance with Hague Rule 20.