A manual feature allows more complex searches, combining elements such as field searching, date-range searching, word truncation, and phrase searching. European Patents For European patents, the gateway to Europe's network of patent databases is Espacenet hosted by the European Patent Office. The free service allows users to search all patent applications published in the past two years by the EPO and WIPO, the World Intellectual Property Organization. Documents are contained in the database in their original language. Search for them by publication number, application number, priority number, publication date, applicant's name, inventor's name, technical field or title text.
Results list full bibliographic details, plus an image of each of the pages.
If available, drawings and full text are also provided. It contains the complete text and images of all U.S. patents issued since 1974, as well as extended bibliographic text and some images back to 1971. In addition to U.S. patents, Delphion includes European applications and patents since 1979, Japanese patent abstracts since 1976, and patent documents from more than 100 countries issued under the WIPO Patent Cooperation Treaty. These databases can be searched by key word, patent number, or using Boolean connectors. Advanced search features allow queries using multiple fields.