law: Trade Marks Act, 1999  
  42. Conditions for assignment otherwise than
  
  in connection with the goodwill of a business.- 
  When an assignment of trade mark, whether
  
  registered or unregistered is made otherwise than in connection with the
  
  goodwill of the business in which the mark has been or is used, the assignment
  
  shall not take effect unless the assignee, not or within such extended period, if
  
  any, not exceeding three months in the aggregate, as the Registrar may allow,
  
  applies to the Registrar for directions with respect to the advertisement of
  
  the assignment and advertises it in such form and manner and within such period
  
  as the Registrar may direct.
  Explanation.- For the purpose of
  
  this section, an assignment of a trade mark of the following description shall
  
  not be deemed to be an assignment made otherwise than in connection with the
  
  goodwill of the business in which the mark is used, namely:- 
  (a) an assignment of a trade mark in respect
  
  only of some of the goods or services for which the trade mark is registered
  
  accompanied by the transfer of the goodwill of the business concerned in those
  
  goods or services only, or
  (b) as assignment of a trade mark which is
  
  used in relation to goods exported from India or in relation to services for
  
  use outside India if the assignment is accompanied by the transfer of the
  
  goodwill of the export business only.