Copyright Defined
Copyright law protects "original works of authorship fixed in a tangible medium of expression" for a limited period (17 U.S.C. §102). Copyrights are conveyed an individual(s) as soon as their work is fixed; formal registration is not required. U.S. copyright law (17 U.S.C.) applies to traditional media (books, records, etc.) and digital media (electronic journals, Web sites, etc.).
Copyright protects the following eight categories of works (17 U.S.C. §102):
- Literary works
- Musical works
- Dramatic works
- Pantomimes and choreographic works
- Pictorial, graphic, and sculptural works
- Motion pictures and other audiovisual works
- Sound recordings
- Architectural works
A copyright holder receives six exclusive rights (17 U.S.C. §106):
- Reproduction
- Distribution
- Modification/derivative works
- Public performance
- Public display
- Digital performance of sound recordings
Copyright: What Is Not Protected
Copyright does not protect:
- Basic facts
- Ideas, methods of operation, principles
- Public domain
- Titles, names, short phrases, slogans (may be trademarked)
- Generally, anything published prior to 1923
Copyright Duration & Notification
Copyrights cannot be held in perpetuity. The United States Constitution (U.S. Const. Art. I, §8) states that "The Congress shall have Power ... to protect the progress of science and useful arts by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries." However, copyright protection does last a long time. See this table to understand more fully the complexities of copyright duration.
Keep in mind that, since 1989, a copyright notice has not been required to be displayed on an item; works that meet basic copyright requirements--an original work of authorship fixed in some form--are automatically protected by law. The copyright holder may add a copyright notice to their work to clarify to users who owns the content.
Copyright Exceptions
Fortunately, copyright law incorporates several exceptions that limit a copyright holder's six exclusive rights. For educational purposes, the most important exceptions are: