A copyright is the legal right to control an original work of authorship.

Copyright Registration

An original work of authorship is copyrighted at the time it is fixed to a tangible medium.

Copyright Infringement

Copyright laws generally prevent people from exploiting the creative works of others without permission.  The key inquiry in a matter of copyright infringement is whether substantial similarity exists between the works at issue.  If substantial similarity does exist, an infringer may be forced to cease sales and pay damages to the copyright holder.