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  2. Espacenet - Wikipedia

    en.wikipedia.org/wiki/Espacenet

    In 2004, i.e. in the early years of Espacenet, Nancy Lambert considered that, although free, Espacenet, like the United States Patent and Trademark Office (USPTO) database of US patents, "still tend[ed] to have primitive search engines and in some cases rather cumbersome mechanisms to download patents."

  3. 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.

  4. 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. This list may not reflect recent changes. B. Baidu Patents; D.

  5. Patent Application Information Retrieval - Wikipedia

    en.wikipedia.org/wiki/Patent_Application...

    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 ...

  6. 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.

  7. The Lens - Wikipedia

    en.wikipedia.org/wiki/The_Lens

    The Lens, formerly called Patent Lens, is a free searcheable online patent and scholarly literature database, provided by Cambia, an Australia-based non-profit organization. The Lens is an agglomeration database, that takes bibliometric data from other databases (such as Crossref, PubMed, Microsoft Academic and Open Alex) and combines them into ...

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