You may find valuable information regarding your question by visiting the uspto.gov and the copyright.gov website. Additionally, if you search through some entertainment attorney websites from your area you may find the answers to your question. If you are located near a local law school library you should search some of the entertainment law books and guides for your answer. Although I am an entertainment attorney, I am not your attorney so I can't give you any legal advice. Do some searching, but to make sure you get the complete answer you should contact an entertainment attorney in your area.
***Disclaimer***
Disclaimer: This post is for the purpose of abstract discussion of legal principles and procedures, and does not create an attorney-client relationship or any other legal relationship between the sender and recipient. It is not legal advice. I may be dead wrong. Your mileage may vary. Consult your professional tax advisor. Eat your vegetables. Brush at least twice daily, especially after meals. Monitor your tire pressure. Get plenty of sleep.