According to the provision of Article 35 of                      the Chinese Patent Law, the time when the applicant can made                      a request for examination as to substance on its own initiative                      is three years from the filing date (where priority is claimed,                      from the date of priority). Obviously, the applicant can make                      a request for examination as to substance at the same time                      when the application for patent for invention is filed. 
 According to the provision of Article 34 of                      the Chinese Patent Law, any applicants for applications for                      patent for invention may request for earlier publication therefor.                    
 Where an invention-creation is rather mature                      therefor it is likely to obtain a patent right, and, before                      filing the application for patent for invention, the applicant                      had already done huge amount of work on the search and investigation                      on the prior art in the field to which said invention belongs                      in respect of the novelty and inventiveness of said invention.                      In addition, the preparation work on the exploitation of said                      invention is also quite ready once being granted the patent                      right, in this case, the applicant, in order to assign his                      invention-creation at an early date, or in order to have the                      products or methods of his invention-creation be exploited                      at an early date, or in order to enter into the proceedings                      of substantive examination or to pass the substantive examination                      and to possibly obtain the patent right at an early date,                      can file a request for earlier publication at the same time                      when filing the application for patent for invention. It goes                      without saying that the applicant shall also make a request                      for substantive examination, otherwise, the purpose of earlier                      examination and possible early grant of patent right can not                      be achieved.