Patent Calculator
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*Date of earliest related non-provisional application. Does not include provisional applications and foreign priority claims.
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Please note that if the first date to pay falls on a weekend then the filing date would move to the next business day.
For Patent No:
The predicted expiration is:
The maintenance fee schedule is:
Window
3.5 Years
7.5 Years
11.5 Years
First Day to Pay
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Last Day To Pay*
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*6-month extensions with fee
Please note: Filing dates that fall on weekends will be moved to the next business day.
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Disclaimer: The tool provided on this webpage is intended for informational purposes only and does not constitute legal advice or create an attorney-client relationship. While we strive to ensure the accuracy of the information generated by this tool, its use should not be considered a substitute for consulting with a qualified attorney. Users are advised not to rely on the results of this tool to make legally binding decisions, as the circumstances of each legal matter are unique and require individualized analysis. For specific legal advice or assistance, please contact our law firm directly to consult with an experienced attorney. By using this tool, you acknowledge and agree that the law firm shall not be liable for any errors, omissions, or decisions made based on the information provided herein.