A Patent is a statutory right for an invention granted for a limited period of time to the patentee by the Government, in exchange of full disclosure of his invention for excluding others, from making, using, selling, importing the patented product or process for producing that product for those purposes without his consent.
After filing the application for the grant of patent, a request for examination is required to be made by the applicant or by third party and thereafter it is taken up for examination by the Patent office. Usually, the First Examination Report is issued and the applicant is given an opportunity to correct the deficiencies in order to meet the objections raised in the said report.
The applicant must comply with the requirements within the prescribed time otherwise his application would be treated as deemed to have been abandoned. When all the requirements are met, the patent is granted and notified in the Patent office Journal. However before the grant of patent and after the publication of application, any person can make a representation for pre-grant opposition.