Article
Pre-Grant vs Post-Grant Patent Opposition In India: Procedure, Grounds, Timelines, Fees And Strategic Considerations
The Patents Act, 1970 provides multiple mechanisms for challenging the grant or validity of a patent in India. Two important statutory mechanisms are pre-grant opposition under Section 25(1) and post-grant opposition under Section 25(2). While both mechanisms allow third parties to challenge a patent on substantially similar grounds, they operate at different stages of the patent lifecycle and differ significantly in terms of standing, procedure, timelines, fees and strategic consequences.
King, Stubb & Kasiva