For the last decade, we have been gathering copyright resources -- and coding many of them.

The Durationator Copryight System:  

Copyright Office Registration and Renewal Records:

Additional Tools - 

  • Fair Use 

  • Termination of Transfer

  • Simultaneous publication

  • Library Exemption

  • Abend

  • Twin Books

  • Classroom Uses

  • Moral Rights

  • Treaty Relations

  • Historical Review

Copyright Laws of the World

Durationator Files (in progress)

Team Durationator
Developer API
(coming soon)
CCE Records
Durationator Portal
External Support: Expert Lawyer List
(coming soon)
Request Information
Request a Demo
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Disclaimer: Limited Times, LLC, is not a law firm and does not provide legal advice to anyone. Limited Times and Durationator provide legal information and research, not legal advice. That legal information is not guaranteed to be correct, complete, or up-to-date. The provision of these services does not create an attorney-client relationship nor does it constitute the giving of legal advice. Users are strongly advised to consult a licensed attorney in their jurisdiction. We cannot provide legal advice, opinions, explanations, or recommend remedies, decisions, or strategies.

Durationator is a registered trademark of Limited Times, LLC.

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