Sub-s.(3) envisages that "an application shall not be entitled to rely for the purpose of clause (b) of sub-s.(1) or for purpose of sub-s.(2) on any non-use of a trade mark which is shown to have been due to special circumstances in the trade and not to any intention to abandon or not to use the trade mark in relation to the goods to which the application relates".S.48 provides for registered users which reads thus: '48.Registered users.-(1) Subject to the provisions of section 49,a person other than the registered proprietor of a trade mark may be registered as the registered user thereof in respect of any or all of the goods in respect of which the trade mark is registered otherwise than as a defensive trade mark; but the Central Government may,by rules made in this behalf,provide that no application for registration as such shall be entertained unless the agreement between the parties complies with the conditions laid down in the rules for preventing trafficking in trade marks.(2) permitted use of a trade mark shall be deemed to be use by the proprietor thereof.and shall be used by a person the proprietor.for the purpose of s.46 or for any other purpose for which such use is material under this Act or any other law