Copyright registration can be used to protect a fixed artistic expression. Some protection is provided to the creator of the copyrighted material upon creation of the work, even without registration. However, registering a copyright can provide additional protections to the creator, especially if the work is promptly registered. Artistic expressions such as books, poems, sculptures, paintings, and musical recordings may be the subject of copyright registrations.
Copyright infringement may occur when a creative expression is reproduced by another in a form substantially similar to the original. There is no rule for exactly how much of the original work needs to be copied to constitute infringement. Rather, a subjective inquiry must be made to determine if substantial similarity exists between the two works. An experienced intellectual property attorney may aid in determining the presence of infringement.