The following types of works may be copyrighted
- literary works
-
musical works, including any accompanying words
-
dramatic works, including any accompanying music
-
pantomimes and choreographic works
-
pictorial, graphic, and sculptural works
-
motion pictures and other audiovisual works
-
sound recordings
-
architectural works
Unlike patent, which protects an idea, copyright protects only a particular expression of an idea. So while copyright might protect a book I write on how to build a particular cappuccino maker, it does not protect the idea of the cappuccino maker described. If no one has a patent on the cappuccino maker, others are free to build cappuccino makers identical to the one I describe in my book, and can even sell these machines for profit. What they cannot do, however, is copy my book (or even a substantial portion of it) without my explicit permission. This distinction between ideas and expression of ideas was explicitly clarified in the 1976 Copyright Act:
"In no case does copyright protection for an original work of authorship extend to any idea, procedure, process, system, method of operation, concept, principle, or discovery, regardless of the form in which it is described, explained, illustrated, or embodied in such work."
[source]
According to U.S. Copyright Law, copyright extends only to "original works of authorship" that are "fixed in a tangible form." The originality requirement is hardly stringent; the Supreme Court established the standard for copyrightable works as containing a
"modicum of originality"
[source]
in
Feist v. Rural
.
Even compilations of facts (though not the facts themselves) may qualify for copyright protection, provided that they are arranged or displayed in an original way.
(See the
Feist Publications v Rural Telephone Service
for more information).
[source]
The second requirement--that copyrighted works be fixed in some tangible medium of expression--is not a problem in most cases where one might want to secure a copyright. Computers, paper, recordings, clay, paint, and any number of other media are considered "fixed." However, if I perform my latest poem at a slam poetry contest, my performance alone is not sufficient to secure copyright, since the performance is not "fixed" in any way. To be protected by copyright, my poem must be recorded in some other way--on paper, on audiotape, on video, etc.
Prior to 1978 (when the 1976 Copyright Law came into effect), securing a copyright required publication of the relevant work, as well as registration of the copyright with the U.S. Copyright Office. To receive copyright protection, a work was also required to display "notice" (the word "copyright" or the little c with a circle around it followed by the name of the creator). Today, U.S. copyright protection is conferred automatically upon the creation of a copyrighted work, whether published or unpublished, and does not require registration of any kind.
Registration of your copyright is nonetheless a good idea, since you must register your copyright prior to suing for copyright infringement. You can register your copyright at any time (even after someone has already infringed upon it), but "timely registration" within three months of publication offers additional benefits. Timely registration "creates a legal presumption that your copyright is valid, and allows you to recover up to $150,000 (and possibly lawyer fees) without having to prove any actual monetary harm." [source]
In 1989, the United States adopted the Berne Convention, which demands minimal formalities in copyright law. As such, notice of copyright (the little c with a circle around it followed by your name) is not required for U.S. copyright protection on works created after March 1, 1989.