Summary
This post examines opposition proceedings to patent applications as governed by Chapter VI of the Patent Rules, 2003. It discusses the procedural aspects of filing oppositions, referencing relevant rules and forms. The introduction of the Patents (Amendment) Act, 2005 is analysed, noting the significant change of allowing post-grant opposition under section 25(2). The author compares pre-grant and post-grant opposition mechanisms, clarifying their respective grounds and eligibility criteria. The structured analysis provides clarity on the evolving landscape of patent challenges in India.
Overview
Chapter VI of the Patent Rules, 2003 deals with opposition proceedings. Rule 55 provides that opposition by representation against the grant of a patent must be filed in duplicate via Form 7 and sent to the Controller. Rule 57 lays down the requirements for filing a written statement of opposition and supporting evidence.
The Pre-grant and Post-grant Dichotomy
The Patents (Amendment) Act, 2005 introduced a dichotomy in opposition proceedings for the first time in the Patents Act, with effect from January 1, 2005, by providing for opposition to the pre-grant of a patent under section 25(1) and opposition to the post-grant of a patent under section 25(2). By reason of the Patents (Amendment) Act, 2005, the character of the opposition available under the Patents Act, 1970 differs from what previously existed. Prior to the amendment, there was no post-grant opposition; the only avenue for challenge by an interested party was a pre-grant challenge under section 25(1) as it then stood. Consequently, the courts evolved the “rule of caution”, as patents had not been subjected to challenge by interested parties after grant. The incorporation of section 25(2) represents a significant shift, conferring on interested parties the right to challenge a patent after its grant.
Grounds for Opposition
The grounds for challenge under section 25(1) are identical to those under section 25(2) of the Patents Act, 1970. Opposition to the pre-grant of a patent under section 25(1) is wider in scope than opposition to the post-grant under section 25(2), as post-grant opposition is available only to a “person aggrieved”. The principal difference between section 25(1) and section 25(2), as introduced by the Patents (Amendment) Act, 2005, is that post-grant opposition under section 25(2) may be filed for a period of up to one year after the grant of the patent.
Disclaimer
This article is for general information and does not constitute legal advice. Readers should consult a qualified attorney before acting on any matter discussed here.