Copyright Ownership: An individual or a legal entity (group, association, business, corporation, etc.) who “own” a created work, either because they authored the creation, or because it was legally transferred to them.
Copyright Protection: Legal protection provided to copyright owners from the misuse of their created works by others.
Exclusive Rights: A set of rights only available to a particular individual or group, such as copyright owners. The exclusive rights of a copyright owner include the ability to control how their work is reproduced, adapted, displayed, performed, and distributed.
Public Domain: Publications and products that are not protected under copyright law and do not require the permission of the copyright owner to use. Note that anything published in the U.S. prior to 1923 is in the public domain.
Tangible Medium: A work that exists in a format from which the creator’s expression can be read, seen, or heard, either directly or by the aid of a machine.
Unprotected Materials: Works that are not protected by copyright law, such as facts, names, slogans, ideas, those works existing in the public domain and those produced by federal government employees within the scope of their employment.