Copyrights and trademarks are examples of legal protections in intellectual property law. IP law also includes patents and trade secrets and is a subset of general property law. Property law is the legal protections of ownership of all property, but IP differs because it focuses on intangible goods.
In the United States, copyright protections stem from the U.S. Constitution, but trademark protections come from many sources, such as state and federal common law, and the federal Lanham Act of 1946. The administrative agencies of the U.S. Patent and Trademark Office and the U.S. Copyright Office regulate and register their respective items of intellectual property. Trademarks may be simultaneously protected under the laws of the individual states and enjoy federal protections.