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  2. Google Patents - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Google_Patents

    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.

  3. Patentscope - Wikipedia

    en.wikipedia.org/wiki/Patentscope

    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.

  4. Derwent World Patents Index - Wikipedia

    en.wikipedia.org/wiki/Derwent_World_Patents_Index

    The Derwent World Patents Index (DWPI) is a database containing patent applications and grants from 44 of the world's patent issuing authorities. [1] [2]Compiled in English by editorial staff, the database provides a short abstract detailing the nature and use of the invention described in a patent and is indexed into alphanumeric technology categories to allow retrieval of relevant patent ...

  5. United States Patent and Trademark Office - Wikipedia

    en.wikipedia.org/wiki/United_States_Patent_and...

    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.

  6. Cooperative Patent Classification - Wikipedia

    en.wikipedia.org/wiki/Cooperative_Patent...

    The Cooperative Patent Classification (CPC) is a patent classification system, which has been jointly developed by the European Patent Office (EPO) and the United States Patent and Trademark Office (USPTO). [1] The CPC is substantially based on the previous European classification system (ECLA), which itself was a more specific and detailed ...

  7. Industrial Property Digital Library - Wikipedia

    en.wikipedia.org/wiki/Industrial_Property...

    The Industrial Property Digital Library ( IPDL) is a free online service for searching Japanese patents, patent applications, utility models, designs and trademarks. It makes available to the public the intellectual property Gazettes of the Japan Patent Office (JPO). The IPDL provides around 55.5 million documents and their relevant information ...

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