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With respect to 'Post-Grant Opposition', which of the following is not correct statement ?

  • A.The Post-Grant Opposition can be filed by any person after the grant of patent but before the expiry of period of one year from the date of publication of grant of the patent
  • B.The provision for filing Post-Grant Opposition has been given u/s 25(2) of the Patents Act, 1970
  • C.The Post-Grant Opposition can be filed by any interested person on the identical grounds as given for pre-grant opposition
  • D.The Post-Grant Opposition can be filed by any person during the valid term of patent

Answer: D

The statement that is not correct is that the Post-Grant Opposition can be filed by any person during the valid term of patent.

Section 25(2) of the Patents Act, 1970 allows post-grant opposition only at any time after the grant but before the expiry of one year from the date of publication of the grant. After that year, a challenge must be brought by revocation proceedings under section 64, not by opposition.

Options B and C are correct: the provision is section 25(2), and it is open to a person interested on grounds parallel to those for pre-grant opposition. Option A states the correct time limit, though section 25(2) gives the right to a 'person interested' rather than to anyone at all.

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