Registration of a 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 or a renewal thereof, the registration may be renewed for additional ten-year terms provided that the mark is in use by the applicant at the time of the application for renewal and that there are no intervening rights. A renewal fee of $25 payable to the secretary of state shall accompany the application for renewal of the registration.
The secretary of state shall notify each registrant of a mark hereunder of the necessity of renewal thereof by writing to the last known address of the registrant approximately six months prior to the registration's expiration date.
Any registration in force on the date on which Laws 1959, chapter 600 shall become effective, shall expire two years after and may be renewed by filing an application with the secretary of state and paying the aforementioned renewal fee therefor within six months prior to the expiration of the registration provided the mark is in use at the time of application for renewal and there are no intervening rights.
The secretary of state shall, within six months after the date on which Laws 1959, chapter 600, shall become effective notify all registrants of trademarks under previous acts of the date of expiration of such registrations, unless renewed in accordance with the provisions of sections 333.18 to 333.31, by writing to the last known address of the registrants.