law: Company Law Board Regulations, 1991 
  21. Service of notice
  
  and process issued by the Bench – 
  1.     
  
    Any
  
  notice or process to be issued by the Bench may be served by any of the
  
  following modes directed by the Bench:
               
  
   i.        
  
    service
  
  by the party itself;
  by
  
  hand delivery (dasti)through a messenger of the Office of the Bench;
             
  
   iii.        
  
    under
  
  Certificate of Posting;
             
  
   iv.        
  
    by
  
  registered post with acknowledgment due if so required by an order of the
  
  Bench;
              
  
   v.        
  
    where
  
  the Central Government is a party, through the Secretary of the concerned
  
  Ministry or Department or through Branch Secretariat of the Ministry of Law or
  
  through Standing Counsel of the Central Government;
             
  
   vi.        
  
    where
  
  the State Government is a party, through the Chief Secretary or the Standing
  
  Counsel of the State Government.
  1.     
  
  
  2.     
  
    Where
  
  a notice is required to be served on a company, it shall be served in the
  
  manner specified in section 51 or, in the case of a foreign company, in the
  
  manner specified in section 496, and may also be served in such other manner as
  
  the Secretary or the Bench Officer may direct.
  3.     
  
    Save
  
  as otherwise provided in sub-regulation (2), notices and other documents, which
  
  are required to be served on any person, other than a company, shall be served
  
  by delivering or tendering a copy thereof to such person or his authorised
  
  representative, where he appears by such representative or by prepaid
  
  registered post, acknowledgement due, addressed to the last-known address of
  
  such person.
  4.     
  
    Where
  
  a notice is served by registered post the Secretary or Bench Officer may, if
  
  the acknowledgment is not received, determine the question as to the
  
  sufficiency of the service of the notice.
  5.     
  
    Where
  
  the notice sent by registered post is returned by the post office with the
  
  remark “refused”, the notice may be presumed to have been duly served .
  6.     
  
    Every
  
  notice, of the petition or reference issued by the Bench shall, unless
  
  otherwise ordered, be accompanied by a copy of the petition or reference, as
  
  the case may be.
  7.     
  
    Notwithstanding
  
  anything contained in sub-regulation (1)to (6), where, for any reason
  
  whatsoever, it is not reasonably practicable to serve notice of petition on all
  
  the respondents, the notice may be served by public advertisement, as the Bench
  
  may in each case direct,
  8.     
  
    The
  
  Bench shall in such cases, determine who shall bear the cost of the public
  
  advertisement.