Copyright, a form of intellectual property law, protects original works of authorship including literary, dramatic, musical, and artistic works, such as poetry, books, picture, Painting, a speach, movies, tunes, source code of a software program, the binary executable file, Website, Mobile App, and structure.
It registration with IPR Authority basically ensures that any creative work can't be replicated without the consent of the author or creator. This enables the author to charge others for copying his work, or changing it, or construction on top of it. For instance, downloading a picture from Shutterstock and using it in your own site without purchasing or taking on lease is violating the copyright of Shutterstock. Shutterstock may file a suit against you to claim its own value of the picture.
By Registering your work, basically you wanted to guard your right over that and some sort of making by letting it to other people for using.