law: Patents Act, 1970
  36. Secrecy directions to be periodically reviewed 
  (1) The question whether an invention in respect of which
  
  directions have been given under section 35 continues to be relevant for
  
  defense purposes shall be re-considered by the Central Government within nine
  
  months from the date of issue of such directions and thereafter at intervals
  
  not exceeding twelve months, and if, on such re-consideration it appears to the
  
  Central Government that the publication of the invention would no longer be
  
  prejudicial to the defense of India it shall forthwith give notice to the
  
  Controller accordingly and the Controller shall thereupon revoke the directions
  
  previously given by him.
  (2) The result of every re-consideration under sub-section (1),
  
  shall be communicated to the applicant within such time and in such manner as
  
  may be prescribed.