Under Section 117A(2) of the Patents Act, 1970, an appeal lies to the High Court from:

Section 117A(2) allows an appeal to the High Court only from decisions, orders or directions of the Controller or the Central Government under the sections it lists, such as sections 15, 25(4), 54, 84(1) to (5) and 92. Orders in post-grant opposition under section 25(4) are among them, while orders outside the list are not appealable.