70.—(1) When a design is registered, the registered proprietor of the design shall, subject to the provisions of this Act, and subject and without prejudice to the copyright conferred by Part VII of this Act in respect, of certain artistic works defining designs, have copyright in the design during five years from the date of registration.

(2) If within the prescribed time before the expiration of the said five years application for the extension of the period of copyright is made to the controller in the prescribed manner, the controller shall on payment of the prescribed fee extend the period of copyright for a second period of five years from the expiration of the original period of five years.

(3) If within the prescribed time before the expiration of such second period of five years application for the extension of the period of copyright is made to the controller in the prescribed manner, the controller may, subject to any rules under this Act, on payment of the prescribed fee extend the period of copy right for a third period of five years from the expiration of the second period of five years.