Search tips and help are provided at the site. This site also includes a lot of information about patenting. Subscription needed to print images . Bi-directional hyperlinking of patent references allows users to locate and view prior art by navigating through all cited patents and access later patents that reference the existing document. Micropatent Patent Web Subscription Required.
Coverage varies by country.
Bibliographic data of all patents published in the preceding two years is available. The abstract, first page drawing, other drawings and fulltext may be displayed and printed, when available. There does not appear to be any costs associated for use of this service nor is registration required. A CAS account User ID and password are required , but all searching, registration and display of patent titles and abstracts is free . Registration requires credit card or purchase order information.