Under Section 47 Patents Act 1970, the grant of patent is subject to which conditions?

1. Section 47 Patents Act 1970 lists conditions subject to which grant is made: (i) any patented machine, apparatus or process may be used / imported by or on behalf of Central Government for purposes of Government merely for its own use; (ii) any patented process may be used by or on behalf of any person for research or experiment with the patent; (iii) in case of medicine or drug, may be imported by Government for its own use or for distribution in any dispensary, hospital or other medical institution under the Central or State Government; (iv) any patented machine, apparatus, process may be made or used by any person for instruction of pupils. 2. These are research-and-Government-use safeguards (overlapping with Sections 100, 107A Bolar). 3. Hence option B is correct. _Source: Patents Act 1970 / Copyright Act 1957 / Trade Marks Act 1999 (Bare Acts, IPIndia portal + Copyright Office) — Patents Act 1970, Section 47_