22. (1) Any person interested may present a petition to the Government which shall be left at the Department of Patents, Designs and Trade Marks, together with the prescribed fee, alleging that the demand for a patented article in Bangladesh is not being met to an adequate extent and on reasonable terms and praying for the grant of a compulsory license, or, in the alternative, for the revocation of the patent. (2) The Government shall consider the petition, and if the parties do not come to an arrangement between themselves the Government may, as it thinks fit either dispose of the petition itself or refer it to the High Court Division for decision. (3) The provisions of sub-section (4) of section 15, prescribing the procedure to be followed in the case of references to the Court under that section, shall apply in the case of references made to the Court under this section. (4) If the Government is of opinion, or, where a reference has been made under sub-section (2) to the High Court Division, that Court finds that the demand for the patented article in Bangladesh is not being met to an adequate extent and on reasonable terms, the patentee may be ordered to grant licenses on such terms as the Government or the High Court Division, as the case may be, may think just, or, if the Government or the High Court Division is of opinion that the demand will not be adequately met by the grant of licenses, the patent may be revoked by order of the Government or the High Court Division: Provided that an order of revocation shall not be made before the expiration of four years from the date of the patent, or if the patentee gives satisfactory reasons for his default. (5) For the purposes of this section the demand for a patented article shall not be deemed to have been met to an adequate extent and on reasonable terms- (a) if by reason of the default of the patentee to manufacture to an adequate extent and supply on reasonable terms the patented article, or any parts thereof which are necessary for its efficient working, or to carry on the patented process to an adequate extent or to grant licenses on reasonable terms, any existing trade or industry or the establishment of any new trade or industry in Bangladesh is unfairly prejudiced,; or (b) if any trade or industry in Bangladesh is unfairly prejudiced by the conditions attached by the patentee to the purchase, hire or use of the patented article or to the using or working of the patented process.