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 published as mentioned in clause (b) or having regard to what was used in India before the priority date of the applicant’s claim;

d. that the subject of any claim of the complete specification is not an invention within the meaning of this Act, or is not patentable under this Act;

e. that the complete specification does not sufficiently and clearly describe the invention or the method by which it is to be performed;

f. that the applicant has failed to disclose to the Controller the information required by section 8 or has furnished the information which in any material particular was false to his knowledge;

g. that in the case of a convention application, the application was not made within twelve months from the date of the first application for protection for the invention made in a convention country by the applicant or a person from whom he derives title;

but on no other ground.

(2) Where any such notice of opposition is duly given, the Controller shall notify the applicant and shall give to the applicant and the opponent an opportunity to be heard before deciding the case.

(3) The grant of a patent shall not be refused on the ground stated in clause (c) of sub-section (1) if no patent has been granted in pursuance of the application mentioned in that clause; and for the purpose of any inquiry under clause (d) or clause (e) of that subsection, no account shall be taken of any secret use.

26. In cases of "obtaining" Controller may treat applications as application of opponent (1) Where in any opposition proceeding under this Act –

a. the Controller finds that the invention, so far as claimed in any claim of the complete specification, was obtained from the opponent in the manner set out in clause (a) of sub-section (1) of section 25 and refuses the application on that ground, he may, on request by such opponent made in the prescribed manner, direct that the application shall proceed in the name of the opponent as if the application and the specification had been filed by the opponent on the date on which they were actually filed;

b. the Controller finds that a part of an invention described in the complete specification was so obtained from the opponent and passes an order requiring that the specification be amended by the exclusion of that part of the invention, the opponent may, subject to the provisions of sub-section (2), file an application in accordance with the provisions of this Act accompanied by a complete specification for the grant of a patent for the invention so excluded from the applicant’s specification, and the Controller may treat such application and specification as having been filed, for the purposes of this Act relating to the priority dates of claims of the complete specification, on the date on which the corresponding document was or was deemed to have been filed by the earlier applicant, but for all other purposes the application of the opponent shall be proceeded with as an application for a patent under this Act.

(2) Where an opponent has, before the date of the order of the Controller requiring the amendment of a complete specification referred to in clause (b) of sub-section (1), filed an application for a patent for an invention which includes the whole or a part of the invention held to have been obtained from him and such application is pending, the Controller may treat such application and specification in so far as they relate to the invention held to have been obtained from him, as having been filed, for the purposes of this Act relating to the