← All toolsCategory 36 · Law and compliancePatents, trademarks and copyright terms
Patents, trademarks and copyright terms
in one clear view.
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Copyright Public Domain Calculator
Apply supported post-1977 U.S. life-plus-70 or 95/120-year terms and show the next-January public-domain checkpoint. Inputs stay in your browser.
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Patent Expiration Maintenance Fee Calculator
Separate the nominal U.S. patent-term estimate, PTA/PTE/disclaimer inputs, utility maintenance windows and live USPTO status. Inputs stay in your browser.
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