WIPO PATENTSCOPE
PATENTSCOPE is run by the World Intellectual Property Organization (WIPO), the United Nations agency for intellectual property. It provides a single search interface across international patent collections, including applications filed under the Patent Cooperation Treaty (PCT) and national patent data from many countries.
It is a valuable discovery and reading tool for anyone working with patents on a global scale, with multilingual search across a broad range of jurisdictions.
Access is free, but the reuse terms are WIPO's own and are not a clear open licence, so what you can legally do with the data beyond searching and reading is unclear. Check WIPO's terms before building on it.
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