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Design patents cover the ornamental appearance of an item. Design patents can be invalidated if the design is dictated solely by function (e.g. the outline of a key blade blank). Design patents are valid for 14 years from the date of issue if filed prior to May 13, 2015, or 15 years from the date of issue if filed on or after May 13, 2015.
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 ...
For design patents (patents based on decorative, non-functional features), for design applications filed on or after May 13, 2015, the term is 15 years from the issue date. For design applications filed before May 13, 2015, the term is 14 years from the issue date. [4]
The US allows design patents for fonts. In fact, the very first design patent awarded in the US (U.S. patent D1), in 1842, was for a font designed by George Bruce. Currently, US design patents are for 15 years from the date of grant (previously 14 years).
According to industrial property Act 2001, an industrial design is defined as "any composition of lines or colours or any three-dimensional form whether or not associated with lines or colours, provided that such composition or form gives a special appearance to a product of industry or handicraft and can serve as pattern for a product of industry or handicraft" .
Under United States law, a patent is a right granted to the inventor of a (1) process, machine, article of manufacture, or composition of matter, (2) that is new, useful, and non-obvious. A patent is the right to exclude others, for a limited time (usually, 20 years) from profiting from a patented technology without the consent of the patent ...
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