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The objective of this paper is to provide the information regarding pre grant, post grant oppositions filed on the basis of
different grounds and the petitions for revoking the earlier granted patent. Any person if interested shall be filed pre grant
opposition after publication by way of representation but before the date of grant, based on section 25(1) and rules 55 (1 to 6).
Post grant opposition can be filed at any time after the grant of patent, before the expiry of a period of 1 year from the date of
publication of grant of patent based on section 25(2) and rules 55A to 63. Revocation of patent on request by opponent in the
case of obtaining stand on section 26(1), section 26(2) and the rule 63A. Revoking the granted patent on the petition of central
government depend on section 64, section 65 and section 66. Revocation by any person interested under compulsory licence
connected with section 85. This presentation gives information that, what are the companies filing oppositions, what are the
companies losing their patents, on the basis of which grounds number of oppositions are succeeding in recent years and the
revocations happened in recent years and the companies got compulsory licences in recent years.
Karra Santhosh reddy has completed his PG Diploma course in patent law from NALSAR University (Hyderabad), bachelor and masters in pharmacy
from Kakatiya University (Warangal).
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