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  1. Patent term calculator | USPTO

    • Download the calculator by right-clicking the link below and selecting the option to save the fileto your computer. Creating additional local copies or renaming the files will not alter the calculations. Please enabl… See more

    Importance of Patent Term Calculations

    The term of a patent is important in that it provides the specified period for infringement. In general, for the term of a patent, whoever without authority makes, uses, offer… See more

    United States Patent and Trademark Office
    History of Changes to Patent Terms

    The term of the patent has been changed by Congress a number of times since 1790: 1. Initially, under the 1790 Patent Act the term could not exceed 14 years. 2. In 1836, Congress p… See more

    United States Patent and Trademark Office
    Calculator Improvement and Feedback

    We are interested in hearing from you regarding the ease of use and accuracy of this web page, the Patent Term Calculator and the Quick Guide. So that we may continually … See more

    United States Patent and Trademark Office
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  1. EXPLANATION OF PATENT TERM ADJUSTMENT …

    The computer program will perform the patent term adjustment (PTA) calculation at the time of issuance of the patent and will be included in the Issue Notification Letter that is mailed to applicants approximately three weeks prior to the …

     
  2. Calculating Patent Term Adjustment: Part 1 - Mintz

    Jun 22, 2017 · Part 1 is a general overview of how to calculate patent term adjustment, without addressing the numerous factors that can affect patent term adjustment that will be examined in future articles. Why PTA Exists. Under the …

  3. 2733-Patent Term Adjustment Determination - United States …

  4. Calculating Patent Term Adjustment: Part 2 - Mintz

    Sep 21, 2017 · While Part 1 is a general overview of how to calculate patent term adjustment (“PTA”), this article addresses how the filing of various papers during prosecution can affect PTA.

  5. A Practical Approach to Calculate Patent Term …

    Oct 17, 2018 · Moving back to the PTA calculation, the adjustment is broadly categorized into 5 elements and is calculated by simple arithmetic as shown below: PTA = (PTO Delay A + PTO Delay B + PTO Delay C – Overlap – …

  6. What is Patent Term Adjustment (PTA) and How to …

    Mar 26, 2024 · Patent Term Adjustment (PTA) can be granted to an issued patent to extend the life of the patent beyond the statutory term of 20 years from the earliest filing date. PTA is granted to compensate the applicant for patent term …

  7. Calculating Patent Term Adjustment (PTA) – An …

    This post will focus on the calculation of PTA, which is intended to adjust the patent term to compensate for delays caused by the U.S. Patent and Trademark Office (USPTO) during the examination process. PTA can be calculated as: …

  8. PTA Calculation: How to Calculate Patent Term …

    May 29, 2023 · Calculating patent term adjustment involves determining the start of the patent term and identifying the A-Delay, B-Delay, and C-Delay components. By accurately assessing the delays caused by the applicant, the USPTO, and …

  9. Understanding Patent Term Adjustment - Computer Packages …

  10. Navigating Patent Term Adjustment: …

    PTA is calculated as the number of days by which the USPTO examination delays exceeded applicant delays during prosecution. The formula for calculating PTA is: PTA = (Days …

  11. Patent Expiration Dates - Understanding Delays and Adjustments

  12. Calculating Patent Term Adjustment: Part 2 | The National Law Rev

  13. Patent Term Adjustment | Patents Dashboard | USPTO

  14. Understanding Patent Term Adjustments (PTA)

  15. Calculating Patent Term Adjustment: Part 1 | The National Law Rev

  16. Calculating Patent Term Adjustment: Part 2 | Mintz - Intellectual ...

  17. Patent Term Adjustment | Practical Law - Westlaw

  18. Patent Term Adjustment | UpCounsel 2025

  19. IPCalculus | Patent Term Adjustment Calculation

  20. Beyond the standard patent term | Gowling WLG

  21. Beyond the standard patent term: Canada’s new patent term …