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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

    Online and developing. 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. Espacenet - Wikipedia

    en.wikipedia.org/wiki/Espacenet

    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 ...

  5. Patent Cooperation Treaty - Wikipedia

    en.wikipedia.org/wiki/Patent_Cooperation_Treaty

    The Patent Cooperation Treaty (PCT) is an international patent law treaty, concluded in 1970. It provides a unified procedure for filing patent applications to protect inventions in each of its contracting states. A patent application filed under the PCT is called an international application, or PCT application.

  6. Category:Patent search services - Wikipedia

    en.wikipedia.org/wiki/Category:Patent_search...

    Pages in category "Patent search services". The following 11 pages are in this category, out of 11 total.

  7. International Patent Classification - Wikipedia

    en.wikipedia.org/wiki/International_Patent...

    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 ...

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