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In the United States, for utility patents filed on or after June 8, 1995, the term of the patent is 20 years from the earliest filing date of the application on which the patent was granted and any prior U.S. or Patent Cooperation Treaty (PCT) applications from which the patent claims priority (excluding provisional applications). For patents ...
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 Application Information Retrieval (PAIR) is an online service provided by the United States Patent and Trademark Office to allow users to see the prosecution histories of United States patents and patent applications and obtain copies of documents filed therein. There are two services: Public PAIR, which allows the general public to ...
PATENTSCOPE is a global patent database and search system developed and maintained by the World Intellectual Property Organization. It provides free and open access to a vast collection of international patent documents, including patent applications , granted patents, and related technical information.
Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.
The abrupt drop in sales expected after the date of patent expiration can be estimated with the following formula: [2] = where A is the peak sales value before the patent expiration and Y the years after the peak sales year (the peak sales year is considered year 0), and B is an exponent with value -1.032. The formula above could be simplified ...
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For patents filed on or after June 8, 1995, under the TRIPS agreement, continuation patents expire 20 years from the date of filing of the parent patent application, regardless of when the patent is granted. Thus, Lemelson's "submarine patents" strategy of taking steps that would delay the patent grant date will no longer extend the patent ...