law: Trade Marks Act, 1999  
  98. Appearance of Registrar in legal
  
  proceedings.- 
  (1) The Registrar shall have the right to
  
  appeal and be heard.- 
  (a) in any legal
  
  proceedings before the Appellate Board in which the relief sought includes
  
  alteration or rectification of the register or in which any question relating
  
  to the practice of the Trade Marks Registry is raised.
  (b) in any appeal to
  
  the Board from an order of the Registrar on an application for registration of
  
  a trade mark.
  (i) which is not
  
  opposed, and the application is either refused by the Registrar or is accepted
  
  by him subject to any amendments, modifications, conditions or limitations, or
  (ii) which has been
  
  opposed and the Registrar consider as that his appearance is necessary in the
  
  public interest.
  And the registrar shall appear in any case if
  
  so directed by the Board.
  (2) Unless the Appellate Board otherwise
  
  directs, the Registrar may, in lieu of appearing, submit a statement in writing
  
  signed by him, giving such particulars as he thinks proper of the proceedings
  
  before him relating to the matter in issue or of the grounds of any decision
  
  given by him affecting it, or of the practice of the Trade Marks Registry in
  
  the like cases, or of other matters relevant to the issues and within his knowledge
  
  as Registrar, and such statement shall be evidence in the proceeding.