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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 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 Leahy–Smith America Invents Act (AIA) is a United States federal statute that was passed by Congress and signed into law by President Barack Obama on September 16, 2011. The law represents the most significant legislative change to the U.S. patent system since the Patent Act of 1952 and closely resembles previously proposed legislation in ...
The original patent term under the 1790 Patent Act was decided individually for each patent, but "not exceeding fourteen years". [26] 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. [27]
This law has been substantially changed as of March 16, 2013, the effective date of the first-to-file provisions of the Leahy-Smith America Invents Act (AIA), although this procedure is still available in patent applications entitled to effective filing dates before this date.
However, United States patent law before the Leahy-Smith America Invents Act (AIA) included the Hilmer doctrine, under which United States patents and patent application publications were prior art only as of their earliest effective United States filing dates, i.e., disregarding any foreign priority claimed in those patents and patent ...
Consequently, in most patent laws nowadays, the term of patent is 20 years from the filing date of the application. This however does not forbid the states party to the WTO from providing, in their national law, other type of patent-like rights with shorter terms. Utility models are an example of such rights. Their term is usually 6 or 10 years.
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(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention.