A patent is a monopolistic right granted by the government for a specific period in return for disclosure of an invention that conforms with the patent laws of the relevant country. The process of securing patent protection begins with the formulation of a filing strategy and concludes when the patent right lapses following non-payment of the prescribed annuity. The life cycle of a patent application follows broadly similar stages across jurisdictions, progressing through filing, publication, examination, grant, and post-grant maintenance.<\/p>\n
Since patent rights are territorial, protection is available only in countries where an application has been filed. Filing deadlines \u2014 including those for complete specifications, convention applications, and national phase applications \u2014 must be observed strictly. An exception arises where the priority application is post-dated, which shifts the priority date and may create challenges in overcoming prior art. Publication places the invention in the public domain; in India and most other jurisdictions, this opens the application to observations from the public that may assist the patent office in examination. In India, examination does not proceed unless an express request is filed within the prescribed period from the date of priority.<\/p>\n
A patent application is granted only where it satisfies the requirements of the applicable patent law. In India, the deadlines for filing a request for examination and for responding to examination reports are non-extendable. Once granted, all annuity fees accrued up to the date of grant must be paid, and the grant is published in the official gazette, inviting post-grant opposition from interested persons. Statements regarding the working of patents must also be filed within the prescribed periods.<\/p>\n
The following presentation provides a structured overview of the patent application life cycle and the key procedural deadlines applicable in India.<\/p>\n