The "fair use" exception in copyright law allows for use of a portion of a copyrighted work for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, without permission.
Under the "fair use" rule of copyright law, an author may make limited use of another author's work without asking permission. Fair use is based on the belief that the public is entitled to freely use portions of copyrighted materials for purposes of commentary and criticism. The fair use privilege is perhaps the most significant limitation on a copyright owner's exclusive rights. If you write or publish, you need a basic understanding of what is and is not fair use. http://www.nolo.com/article.cfm/objectID/C3E49F67-1AA3-4293-9312FE5C119B5806
substantive due process
You may use copyright protected material when you are the copyright holder, or when you have permission from the rightsholder or an exemption in the law. The most notable exemption is fair use or fair dealing, which allows certain limited unlicensed uses in situations such as education and commentary.
Fair use is an exemption to copyright law; using it carries no penalties.
Included in the copyright law is the notion of "fair use," which allows certain specific unlicensed uses such as this. See the link below for a good discussion of copyright and fair use in the classroom.
Aneeta Brown has written: 'Copyright law for the church' -- subject(s): Church newsletters, Copyright infringement, Fair use (Copyright)
Infringement is the use, without permission, of copyrighted material that does not fall under a "fair use" or other exception to copyright law,
Copyright law is US Code Title 17, and fair use is section 107 of it.
It's not strictly a paradox; fair use is a clause in the copyright law allowing certain limited unlicensed uses. It is only one of many limitations, defenses, and exceptions to the exclusive rights of the copyright holder.
The Copyright Office is said to have administrative control of copyright because it administers the law.
J. H. Spoor has written: 'Copies in Copyright (Monographs on Industrial Property & Copyright Law)' 'Scripta manent' -- subject(s): Reproduction of money, documents, Law and legislation, Copyright 'Copies in copyright' -- subject(s): Photocopying, Fair use (Copyright)
Your question is a non sequitur. A subpoena is simply a court order to appear. I can't envision any scenario where it might contravene copyright law.
Fair use (or fair dealing in some countries) is one of many limitations, defenses, and exceptions within copyright law. It is intended to allow certain limited uses of protected works in situations such as education and commentary.