(1) Notwithstanding anything contained in this Act,-
(a) Every patent in force at the commencement of this Act in respect of inventions relating to-
(i) Substances used or capable of being used as food or as medicine or drug;
(ii) The methods or processes for the manufacture or production of any such substance as is referred to in sub-clause (i);
(iii) The methods or processes for the manufacture or production of chemical substances (including alloys, oplical glass,semi-conductors and inter-metallic compounds).shall be deemed to be endorsed with the words "Licences of right" from the commencement of this Act or from the expiration of three years from the date of sealing of the patent under the Indian Patents and Designs Act, 1911 (2 of 1911), whichever is later; and
(b) Every patent granted after the commencement of this Act in respect of any such invention as is referred to in section 5 shall be deemed to be endorsed with the words "Licences of right" from the date of expiration of three years from the date of sealing of the patent.
(2) In respect of every patent which is deemed to be endorsed with the words "Licences of right" under this section, the provisions of section 88 shall apply.
(1) Where a patent has been endorsed with the words "Licences of right", any person who is interested in working the patented invention in India may require the patentee to grant him a licence for the purpose on such terms as may be mutually agreed upon, notwithstanding that he is already the holder of a licence under the patent.
(2) If the parties are unable to agree on the terms of the licence, either of them may apply in the prescribed manner to the Controller to settle the terms thereof.
(3) The Controller shall, after giving notice to the parties and hearing them and after making such enquiry as he may deem iit, decide the terms on which the licence shall be granted by the patentee.
(4) The Controller may at any time before the terms of the licence are mutually agreed upon or decided by the Controller, on application made to him in this behalf by any person who has made any such requisition as is referred to in sub-section (1), permit him to work the patented invention on such terms as the Controller may, pending agreement between the parties or decision by the Controller, think fit to impose.
(5) In the case of every patent in respect of an invention referred to in sub-clause (i), or sub-clause (ii), of clause (a) of sub-section (1) of section 87 and deemed to be endorsed with the words "Licences of right" under clause (a) or clause (b) of that subsection, the royalty and other remuneration reserved to the patentee under a licence granted to any person after such commencement shall in no case exceed four per cent of the next ex-factory sale price in bulk of the patented article (exclusive of taxes levied under any law for the time being in force and any commissions payable) determined in such manner as may be prescribed.
(6) Save as otherwise provided in sub-section (5), the provisions of sub-sections (1), (2), (4) and (5) of section 93 (regarding the powers of the Controller) and of sections 94 and 95 shall apply to licences granted under this section as they apply to licences granted under section 84.
(1) Where, in respect of a patent, a compulsory licence has been granted or the endorsement "Licences of right" has been made or is deemed to have been made, the Central Government or any person interested may, after the expiration of two years from the date of the order granting the first-compulsory licence or, as the case may be, the date of the grant of the first licence under section 88, apply to the Controller for an order revoking the patent on the ground that the reasonable requirements of the public with respect to the patented invention have not been satisfied or that the patented invention is not available to the public at a reasonable price.
(2) livery application under sub-section (1) shall contain such particulars as may be prescribed and the facts upon which the application is based, and, in the case of an application other than by the Central Government, shall also set out the nature of the applicant's interest.
(3) The Controller, if satisfied that the reasonable requirements of the public with respect to the patented invention have not been satisfied or that the patented invention is not available to the public at a reasonable price, may make an order revoking the patent.
(4) Every application under sub-section (1) shall ordinarily be decided within one year of its being presented to the Controller.
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