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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.
International Patent Classification. The International Patent Classification (IPC) is a hierarchical patent classification system used in over 100 countries to classify the content of patents in a uniform manner. It was created under the Strasbourg Agreement (1971), one of a number of treaties administered by the World Intellectual Property ...
The United States Patent Classification is an official patent classification system in use and maintained by the United States Patent and Trademark Office (USPTO). It was mostly replaced by the Cooperative Patent Classification (CPC) on January 1, 2013. [1] Plant and design patents are still classified solely within USPC at the USPTO.
Espacenet (formerly stylized as esp@cenet) [1][2] is a free online service for searching patents and patent applications. Espacenet was developed by the European Patent Office (EPO) together with the member states of the European Patent Organisation. Most member states have an Espacenet service in their national language, and access to the EPO ...
The United States Patent and Trademark Office (USPTO) is an agency in the U.S. Department of Commerce that serves as the national patent office and trademark registration authority for the United States. The USPTO's headquarters are in Alexandria, Virginia, after a 2005 move from the Crystal City area of neighboring Arlington, Virginia.
INPADOC, which stands for In ternational Pa tent Doc umentation, [1][notes 1] is a freely available international patent database. It is produced and maintained by the European Patent Office (EPO). INPADOC developed a patent families classification, which groups together patent applications (and issued patents) originating from the same ...
e. 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 to which priority is claimed (excluding provisional applications). [1][2][3] The patent term in the United States was changed in 1995 to bring U.S. patent law ...
t. e. A patent application is a request pending at a patent office for the grant of a patent for an invention described in the patent specification [ notes 1 ] and a set of one or more claims stated in a formal document, including necessary official forms and related correspondence. It is the combination of the document and its processing ...