Trade Marks Act, 1999
136. Registered user to be impleaded in certain proceedings.-
(1) In every proceeding under Chapter VII or under section 91, every registered user of a trade mark using by way of permitted use, who is not himself an applicant in respect of any proceeding under that Chapter or section, shall be made a party to the proceeding.
(2) Notwithstanding anything contained in any other law, a registered user so made a party to the proceeding shall not be liable for any costs unless he enters an appearance and takes part in the proceeding.