In the Indian patent system, a request to patent office has to be made to process the application to the Examination stage. Unlike other countries like USA, where the examination fee has to be paid at the time of filing itself, Indian Patent Act 1970 provides 4 years time frame to file and pursue the application to the examination stage. The Patent Office will examine an application only if the applicant files a request for examination. If it is not filed within the specified time limit the application shall be treated as withdrawn.