Copyright is a form of protection grounded in the U.S. Constitution and granted by law for original works of authorship fixed in a tangible medium of expression. Copyright covers both published and unpublished works.
Copyright protects things such as intellectual property, video games, photographs, images, music, movies, websites, architecture, software and much more.
The four factors to consider are:
- the purpose and character of your use
- the nature of the copyrighted work
- the amount and substantiality of the portion taken
- the effect of the use upon the potential market.