There are many laws that protect people in the world. Some of these laws are meant to protect rights covered under the Bill of Rights, and other rights are meant to protect the things we create. The eligibility for copyright protection is extended to anyone who is able to create something that is tangible.
There are international laws that provide copyright protection, and the laws for people living in the United States are covered under the doctrine of 17 USCA Section 102(a). The eligibility for copyright protection is clearly outlined in this document and business owners would fare well to spend a little bit of time reading through this doctrine because it may keep someone else from stealing the royalties of your work.
The eligibility for copyright protection extends to any tangible thought that is applied to paper. If it is still in your mind or in the development process where the idea has not been put down on paper or some other solid form, then the eligibility for copyright protection will not apply to it. Some people expect this to apply and are sorely disappointed when they are turned down at the copyright registration office.