Under INDIAN COPYRIGHT ACT 1957 u/s 54.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 disclosed 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.
So the suggestion will be to file as follows:
1) When filing for copyright protection for your writing, use your real name for “Copyright Claimant” and your pen name for “Name of Author.”
So for the purpose of usage, you should use the copyright symbol with your pen-name as your work is registered with your real name.
Hope this helps.