A patent is granted on the request of the applicant in a prescribed form that the complete specification of the application is accepted and no opposition is filed against it, or the decision of the opposition filed is in favor of the applicant. The patent is then published in the Office Gazette.
The term for patents in Pakistan is 20 years from the date of filing of the application for the patent. It is the responsibility of the patentee to maintain an issued patent by paying the annuities until the patent expires. After 20 years term the invention claimed in the patent falls into the public domain.