COPYRIGHT is automatic protection. You do not need to apply for copyright. It is an automatic right that exists as soon as your work is fixed in some way. For example on paper, film or voice recordng. There is no official registration system for copyright in the UK, although there may be elsewhere. There are no forms to fill in and no fees to pay to get copyright protection.

Essentially copyright is a private right, you get automatic protection so long as you have created a work that qualifies for copyright protection,

That is it falls into one of the categories of material protected by copyright, you will have copyright protection without having to do anything to establish this.

'It is a requierment of various international conventions on copyright that copyright should be automatic with no need to register.'

To help protect your copyright work, it is advisable to mark it with the c symbol, the name of the copyright owner and the year  of publication. Although this is not essential it will let others know when the term of protection started and hence whether it is still covered by copyright and indicate who to approach should they need to ask permission to use the work 

The benefits of having copyright protection enables you to exploit & profit from your copyright work by either selling it or licensing it to others.