
Indian patent law does not use the US “utility patent” or “plant patent” classification. Under the Patents Act, 1970, Indian inventors choose between six types of applications: ordinary, provisional, convention, PCT national phase, divisional, and patent of addition. Each serves a distinct strategic purpose. Filing the wrong type — or filing in the wrong sequence — can cost you your priority date or your protection entirely. This guide explains every type with its statutory basis and when to use it.








