(2)

Where the Controller gives any such directions as are referred to in subsection (1), he shall give notice of the application and of the directions to the Central Government, and the Central Government shall, upon receipt of such notice, consider whether the publication of the invention would be prejudicial to the defence of India, and if upon such consideration, it appears to it that the publication of the invention would not so prejudice, give notice to the Controller to that effect, who shall thereupon revoke the directions and notify the applicant accordingly.

(3)

Without prejudice to the provisions contained in sub-section (1), where the Central Government is of opinion that an invention in respect of which the Controller has not given any directions under sub-section (1), is relevant for defence purposes, it may at any time before grant of patent notify the Controller to that effect, and thereupon the provisions of that sub-section shall apply as if the invention where one of the class notified by the Central Government, and accordingly the Controller shall give notice to the Central Government of the directions issued by him.