1904.07   Invalidation of Protection in United States

An extension of protection to the United States may be invalidated in an administrative or judicial proceeding governed by United States law, such as a cancellation proceeding before the Trademark Trial and Appeal Board or a federal court proceeding.  The USPTO must notify the IB if an extension of protection to the United States is invalidated.  Article 5(6).  The requirements for a notice of invalidation are set forth in Common Reg. 19.