1. A public domain is basically a total absence of copyright protection for work. public domain is a property which are not owned or controlled by anyone. As they say once a public domain, always a public domain. 2. Any variation on any public domain work becomes the property of the person making the variation, and it receives an automatic copyright, just as do completely original works. 3. The term indicates that these materials are therefore “public property”, and available for anyone to use for any purpose.