(a) A registration of mark hereunder shall be effective for a term of ten years from the date of registration and, upon application filed within six months prior to the expiration of such term, in a manner complying with the requirements of the secretary, the registration may be renewed for a like term from the end of the expiring term. A renewal fee, payable to the secretary, shall accompany the application for renewal of the registration.
(b) A registration may be renewed for successive periods of ten years in like manner.
(c) Any registration in force on the date on which this article becomes effective shall continue in full force and effect for the unexpired term thereof or for a term of five years from the effective date of this section, whichever shall first expire, and may be renewed by filing an application for renewal with the secretary complying with the requirements of the secretary and paying the aforementioned renewal fee therefor within six months prior to the expiration of the registration.
(d) All applications for renewal under this article, whether of registrations made under this article or of registrations effected under any prior article, shall include a verified statement that the mark has been and is still in use and include a specimen showing actual use of the mark on or in connection with the goods or services.