Following filing of a European patent application a grant procedure is followed with substantive examination. This means that not only is a search report drawn up for the application but an examination of the grant criteria (novelty, inventive step and industrial applicability) is also carried out. During this grant procedure the applicant (or his/her patent attorney) has discussions with the European Patent Office in order to bring about the grant of a patent. In-depth knowledge of the current patent legislation and case law is essential here. The discussions take place in the first instance in writing and can result in a hearing at which oral discussions take place.