The PATENTSCOPE database provides access to published International PCT applications in full-text on the day of publication, patent documents from participating national and regional offices non-patent literature
With its worldwide coverage and search features, Espacenet offers free access to information about inventions and technical developments from 1782 to today.
The International Patent Classification (IPC), established by the Strasbourg Agreement 1971, provides for a hierarchical system of language independent symbols for the classification of patents and utility models according to the different areas of technology to which they pertain.
European Patent Register
The European Patent Register is the most complete and up-to-date source of publicly available procedural information on European patent applications as they pass through each stage of the EPO granting process and on European patents with unitary effect.
The Cooperative Patent Classification (CPC) is an extension of the IPC and is jointly managed by the EPO and the US Patent and Trademark Office. It is divided into nine sections, A-H and Y, which in turn are sub-divided into classes, sub-classes, groups and sub-groups.