Section 3306 - Duration and renewal(a) Registration of a mark under this chapter shall be effective for a term of 10 years from the date of registration and, upon application filed within 6 months prior to the expiration of such term, on a form to be furnished by the Secretary of State, the registration may be renewed for a like term. A renewal fee of $25, payable to the Secretary of State, shall accompany the application for renewal of the registration. A trademark registration may be renewed for successive periods of 10 years in like manner. (b) The Secretary of State shall notify registrants of marks hereunder of the necessity of renewal within the year next preceding expiration of the 10 years from the date of registration by writing to the last known address of a registrant.(c) Any registration in force on the date on which this chapter shall become effective shall expire 10 years from the date of the registration, the last renewal thereof or 1 year after the effective date of this chapter, whichever is later, and may be renewed by filing an application with the Secretary of State on a form furnished by the secretary and paying the aforementioned renewal fee thereof within 6 months prior to the expiration of the registration.(d) All applications for renewals under this chapter, whether of registrations made hereunder or of registrations effected under any prior act, shall include a statement that the mark is still in use in this State. (e) The Secretary of State shall, within 6 months after such effective date, notify all registrants of marks registered under previous acts of the date of expiration of such registrations, unless renewed in accordance with this chapter, by writing to the last known address of the registrants. 60 Del. Laws, c. 612, § 1; 70 Del. Laws, c. 186, § 1.;