18. (1) The registration of a trade mark shall be for a period of seven years, but may be renewed from time to time in accordance with the provisions of this section. (2) The Registrar shall, on application made by the registered proprietor of a trade mark in the prescribed manner and within the prescribed period, renew the registration of the trade mark for a period of fifteen years from the date of expiration of the original registration or of the last renewal of registration, as the case may be (which date is in this section referred to as “the expiration of the last registration”). (3) At the prescribed time before the expiration of the last registration of a trade mark, the Registrar shall send notice in the prescribed manner to the registered proprietor of the date of expiration and the conditions as to payment of fees and otherwise upon which a renewal of registration may be obtained, and if at the expiration of the time prescribed in that behalf those conditions have not been duly complied with, the Registrar may remove the trade mark from the register, subject to such conditions (if any) as to its restoration to the register as may be prescribed.