Definition - What does Copyright Registration mean?
Copyright registration is when a person has a particular piece of work that meets the criteria of the U.S. Copyright Office guidelines and they file a registration for protection against infringement. Copyright registration gives the owner of the work legal protection against plagiarism by having an official government acknowledgement that they are the original creator of the material.
Justipedia explains Copyright Registration
People go through the process of copyright registration in order to prevent their work from being illegally copied or infringed upon. A copyright is very similar to a patent. However, a patent grants protection for inventions. A copyright grants protection for an idea or a work of art. In either case, the creator of the material seeks to have legal exclusivity for their work. Copyrights and patents give incentive to people to come up with new ideas and inventions because they prevent the stealing of these ideas and inventions