A fair use of a copyrighted work may include the practice of any of the exclusive rights provided by copyright, for example, reproduction for purposes such as criticism comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research. These factors, which should be considered together when determining fair use, are:
Purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;
Nature of the copyrighted work;
Amount and substantiality of the portion used in relation to the copyrighted work as a whole; and
Effect of the use upon the potential market for or value of the copyrighted work
