A United States trade mark registration remains in full force and effect for a period of 10 years from the date of issuance. However, in order to maintain the registration, the trade mark owner must file a declaration of use between the fifth year and sixth year following the date of registration (or, with payment of a penalty, within six months thereafter). The declaration of use is a sworn statement by the trade mark owner indicating that the registered mark continues to be in use in the United States for each of the goods covered by the registration and includes a specimen showing use of the mark for the classifications. If the required declaration of use and the supporting specimens are not filed, the registration will be cancelled.