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Copyright Basics
     

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Introduction to Copyright

What is Copyright?

Public Domain Analysis Charts

Once the copyright on a work expires, the work is considered to be in the public domain and can be freely duplicated, used, and altered. The following charts explain when a work will enter the public domain.

Copyright Law

U.S. Copyright Law

Exceptions and Limitations

  • Fair Use (107)
    Allows for the limited use of copyrighted materials without obtaining copyright permission when the materials are used for teaching, scholarship, research, criticism, and commentary.

  • Library Exception (108)
    Allows libraries and archives to reproduce one copy of a work without obtaining copyright permission.

  • Right of Sale (109)
    Allows members of the general public the right to resell or lend copies of works that they have purchased.

  • The Teach Act (110)
    This act clarifies when it is permissible to use copyrighted materials in a distance education setting.

  • Digital Millennium Copyright Act of 1998
    This act heightens the penalties for copyright infringement on the Internet and makes it illegal to produce or distribute technology that can circumvent measures taken to protect copyright.

Copyright Basics Online Tutorials


This website presents information about copyright law. HS/HSL makes every effort to assure the accuracy of this information, but does not offer it as counsel or legal advice. Consult your own attorney for advice concerning your specific situation.

Still have a copyright question? Email the HS/HSL Reference Desk or call 410-706-7996

Content maintained by Julie Nanavati. Last updated, 03/19/07.

Last edited: May 16, 2007


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