Permission to conduct clinical investigation The Central Licensing Authority, after such further enquiry, if any, as considered necessary, may, — (i) if satisfied, that the requirements of these rules have been complied with, grant permission to conduct clinical investigation for an investigational medical device in Form MD-23; (ii) if not satisfied with the requirements as referred to in sub-clause (i), reject the application, for reasons to be recorded in writing, within a period of ninety days, from the date of application made under sub-rule (1) of rule 51.