Guide for applicants, Part 2: PCT procedure before the EPO (Euro-PCT Guide)

Any international application must contain the following elements: PCT request, description, claim(s) and an abstract. Drawings must only be filed when they are necessary for the understanding of the invention. As regards international applications in the field of biotechnology see also the information in points 146 ff.

The international application has to be filed with the EPO as receiving Office in one copy only. However, if the application is filed by fax a confirmation copy must be filed (see points 71 ff).