USPTO USPTO Access information: Freely available Description: From the United States Patent and Trademark Office. PDF images for all USA patents from 1790 onwards. Also full-text and PDF images of applications. Searches are limited to patent numbers and/or classification codes for pre-1976 patents. Currently (July 2014), the full text search of multiple international patent collections covers just Chinese patent documentation from the State Intellectual Property Office (SIPO) of the People’s Republic of China. Includes full text Chinese patents, English machine translations and full document images. Records of active and inactive trademarks registered with the USPTO. Includes applications. This article was published on 2024-08-21
