The Patent Litigation Law Review: EPO
The European Patent Office provides an opportunity to file a central opposition against the grant of a European patent within an opposition period of nine months. Opposition proceedings are predominantly written proceedings, but typically will conclude with oral proceedings before an Opposition Division of three members. Decisions of the Opposition Divisions may be appealed to the Boards of Appeal.
The Boards of Appeal of the European Patent Office is an autonomous body, consisting of 28 boards that each deal with different subject-matter areas. The Boards of Appeal can exercise any power within the competence of the Opposition Division or remit the case to the Opposition Division for further prosecution.
Source: Law Business Research