law: Trade Marks Act, 1999  
  45. Registration of assignment and
  
  transmissions.- 
  (1) Where a person becomes entitled by
  
  assignment or transmission to a registered trade mark, he shall apply in the
  
  prescribed manner to the Register to register his title, and the Registrar
  
  shall, on receipt of the application and on proof of title to his satisfaction,
  
  register him as the proprietor of the trade mark in respect of the goods or
  
  services in respect of which the assignment or transmission has effect, and
  
  shall cause particulars of the assignment or transmission to be entered on the
  
  register.
  Provided  that where the validity of an
  
  assignment or transmission is in dispute between the parties, the Register may
  
  refuse to refuse to register the assignment or transmission until the rights of
  
  the parties have been determined by a competent court.
  (2) Except for the purpose of an application
  
  before the Registrar under sub-section (1) or an appeal from an order thereon,
  
  or an application under section 57 or an appeal from an order thereon, a
  
  document or instrument in respect of which no entry has been made in the
  
  register in accordance with sub-section (1) shall not be admitted in evidence
  
  by the Registrar or the Appellate Board or any court in proof of title to the trade
  
  mark by assignment or transmission unless the Registrar or the Appellate Board
  
  or the court as the case may be, otherwise directs.