law: 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.