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In United States patent law, utility is a patentability requirement. [1] As provided by 35 U.S.C. § 101 , an invention is "useful" if it provides some identifiable benefit and is capable of use and "useless" otherwise. [ 2 ]
The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.
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 ...
Patent applications can be filed at the United States Patent and Trademark Office (USPTO). Prior to June 7, 1995, the duration of a US utility patent was 17 years from patent issuance. Since that date, the duration of the US utility patent is 20 years from the earliest effective filing date.
This type of right is available in many countries but, notably, not in the United States, United Kingdom or Canada. [1] [2] Although a utility model is similar to a patent, it is generally cheaper to obtain and maintain, has a shorter term (generally 6 to 15 years), shorter grant lag, and less stringent patentability requirements.
In United States patent law, a method, also called "process", is one of the four principal categories of things that may be patented through "utility patents".The other three are a machine, an article of manufacture (also termed a manufacture), and a composition of matter.
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