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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. 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 ...

5. United States Patent and Trademark Office - Wikipedia

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

   The X generally appears at the end of the numbers hand-written on full-page patent images; however, in patent collections and for search purposes, the X is considered to be the patent type – analogous to the "D" of design patents – and appears at the beginning of the number.

6. Espacenet - Wikipedia

   en.wikipedia.org/wiki/Espacenet

   According to the Patent Information News' magazine published by the EPO, a 2013 independent study compared Espacenet with DepatisNet, Freepatentsonline, Google Patent and the public search facility at the USPTO. In that study, Espacenet reportedly obtained the highest score for both data coverage and customer support, and the best overall ...

7. Patent - Wikipedia

   en.wikipedia.org/wiki/Patent

   When patent litigation is involved (which in year 1999 happened in about 1,600 cases compared to 153,000 patents issued in the same year [98]), costs increase significantly: although 95% of patent litigation cases are settled out of court, [99] those that reach the courts have legal costs on the order of a million dollars per case, not ...