Patents Act, 1970
12. Examination of application
(1) When the complete specification has been filed in respect of an application for a patent, the application and the specification relating thereto shall be referred by the controller to an examiner for making a report to him in respect of the following matters, namely,-
(a) whether the application and the specification relating thereto are in accordance with the requirements of this Act and of any rules made thereunder;
(b) whether there is any lawful ground of objection to the grant of the patent under this Act in pursuance of the application;
(c) the result of investigations made under section 13; and
(d) any other matter which may be prescribed.
(2) The examiner to whom the application and the specification relating thereto are referred under sub-section (1) shall ordinarily make the report to the Controller within a period of eighteen months from the date of such reference.