Copyright-- Official

: Ideas, facts, systems, methods, titles, or short phrases. It only protects the specific expression of an idea, not the idea itself.

: For individual authors in the U.S., protection typically lasts for the author's life plus 70 years. Fair Use and Public Domain

: In many jurisdictions, including the U.S., copyright exists automatically the moment a work is fixed in a tangible medium. You do not need to register it or use the © symbol for protection to begin, though doing so offers additional legal benefits.