law: Companies Act, 1956
  Sec 18    -    
  
  Alteration to be registered within three months. 
  (1) A company shall file with the Registrar :
  (a) a special resolution passed by a company
  
  in relation to clauses (a) to (g) of sub-section (1) of section 17, within one
  
  month from the date of such resolution ; or
  (b) a certified copy of the order of the
  
  Company Law Board made under sub-section (5) of that section confirming the
  
  alteration, within three months from the date of order, as the case may be,
  
  together with a printed copy of the memorandum as altered and the Registrar
  
  shall register the same and certify the registration under his hand within one
  
  month from the date of filing of such documents.
  (2) The certificate shall be conclusive
  
  evidence that all the requirements of this Act with respect to the alteration
  
  and the confirmation thereof have been complied with, and thenceforth the
  
  memorandum as so altered shall be the memorandum of the company.
  (3) Where the alteration involves a transfer
  
  of the registered office from one State to another, a certified copy of the
  
  order confirming the alteration shall be filed by the company with the
  
  Registrar of each of the States, and the Registrar of each such State shall
  
  register the same, and shall certify under his hand the registration thereof;
  
  and the Registrar of the State from which such office is transferred shall send
  
  to the Registrar of the other State all documents relating to the company
  
  registered, recorded or filed in his office.
  (4) The Company Law Board may, at any time, by
  
  order, extend the time for the filing of documents or for the registration of
  
  the alteration under this section by such period as it thinks proper.