law: Trade Marks Act, 1999  
  24. Jointly owned trade marks.- 
  (1) Save as provided in sub-section (2),
  
  nothing in this Act shall authorize the registration of two or more persons who
  
  use a trade mark independently, or propose so to use it, as joint proprietors
  
  thereof.
  (2) Where the relations between two or more
  
  persons interested in a trade mark are such that no one of them is entitled as
  
  between himself and the other or others of them to use it except- 
  (a) on behalf of both
  
  or all of them, or
  (b) in relation to an
  
  article or service with which both or all of them are connected in the course
  
  of trade.
  Those persons may be registered as joint
  
  proprietors of the trade mark, and this Act shall have effect in relation to
  
  any rights to the use of the trade mark vested in those persons as if those
  
  rights had been vested in a single person.