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  1. The lifespan of a patent depends on the type of patent12345:
    • Utility patents last for 20 years from the date of application.
    • Design patents have a lifespan of 14 years from the date of approval.
    • For patents granted before June 8, 1995, the term is 20 years from the filing date or 17 years from the grant of patent, whichever is later.
    Learn more:
    Under United States patent law, the term of patent, provided that maintenance fees are paid on time, is 20 years from the filing date of the earliest U.S. or international application (that is to say, an application under the PCT system) to which priority is claimed (excluding provisional applications).
    en.wikipedia.org/wiki/Term_of_patent_in_the_Unite…
    A patent’s term depends on the type of patent, but most patents are good for 20 years. The calculation depends on many factors, including the type of patent, whether regulatory approval is needed, and how long the United States Patent Office takes to approve the patent.
    www.goldsteinpatentlaw.com/how-long-is-us-paten…
    A utility patent currently lasts for 20 years (from the date of application), while a design patent has a lifespan of 14 years (from the date of approval). For patents granted before June 8, 1995, the term of patent is 20 years from the filing date or 17 years from the grant of patent by the patent office, whichever is later.
    legalbeagle.com/12717430-what-is-the-lifespan-of-…
    A patent will typically exist for 20 years and may be used for any invention in the technology field or industry field.
    www.legalmatch.com/law-library/article/patent-dura…
    A patent is valid in the particular country in which it is granted and for a certain period of time, generally 20 years from the date of filing the patent application.
    www.epo.org/en/service-support/faq/patents-and-ip…
     
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    Term of patent in the United States - Wikipedia

    Under United States patent law, the term of patent, provided that maintenance fees are paid on time, is 20 years from the filing date of the earliest U.S. or international application (that is to say, an application under the PCT system) to which priority is claimed (excluding provisional applications). The patent term in … See more

    The original patent term under the 1790 Patent Act was decided individually for each patent, but "not exceeding fourteen years". The 1836 Patent Act (5 Stat. 117, 119, 5) provided (in … See more

    USPTO processing extension
    If the United States Patent and Trademark Office (USPTO) fails to examine a patent application in time (deadlines for various steps are different), the patent term may be extended. Extensions or other delay taken by the … See more

    1790
    The original patent term under the 1790 Patent Act was decided individually for each patent, but "not exceeding fourteen years".
    1836
    The 1836 Patent Act (5 Stat. 117, 119, 5) provided (in addition to the fourteen-year term) an extension "for the term of seven years from and after the expiration of the first term" in certain circumstances, when the inventor hasn't got "a reasonable remuneration for the time, ingenuity, and expense".
    1861
    In 1861 the seven-year extension was eliminated and the term changed to seventeen years (12 Stat. 246, 248).
    1994
    The enactment of the 1994 Uruguay Round Agreements Act then changed the patent term from seventeen years from the date of issue to the current twenty years from the earliest filing date.
    1995
    The patent term in the United States was changed in 1995 to bring U.S. patent law into conformity with the World Trade Organization's Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS) as negotiated in the Uruguay Round. As a side effect, it is no longer possible to maintain submarine patents in the U.S., since the patent term now depends on the filing date, not the issue date.
    2004
    The USPTO issues a Certificate of Reexamination on January 1, 2004.
    2015
    Design patents filed on or after May 13, 2015, have a term of 15 years from issuance. Design patents filed prior to May 13, 2015, have a term of 14 years from issuance.

    • For a detailed description of the laws and rules governing patent terms in the U.S., see the Manual of Patent Examining Procedure See more

     
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