law: Copyright Act, 1957 
  54. Definition –
  For the purposes of this Chapter, unless the
  
  context otherwise requires, the expression, "owner of copyright"
  
  shall include- 
  a. an exclusive licensee :
  b. in the case of an anonymous or
  
  pseudonymous literary, dramatic, musical or artistic work, the publisher of the
  
  work, until the identity of the author or, in the case of an anonymous work of
  
  joint authorship, or a work of joint authorship published under names all of
  
  which are pseudonyms, the identity of any of the authors, is disclose publicly
  
  by the author and the publisher or is otherwise established to the satisfaction
  
  of the Copyright Board by that author or his legal representatives.