How and where do I file a demand for international preliminary examination?
To file a demand for international preliminary examination, use the prescribed form (PCT/IPEA/401) and submit it, together with any further document relating to this PCT Chapter II procedure (e.g. amendments and/or arguments filed under Article 34 PCT), directly to the EPO as IPEA. The EPO as IPEA will indicate the date of receipt on the demand and promptly notify you of that date. It is recommended to file the demand online via Online Filing 2.0. You can also use the ePCT service for online filing of the demand under PCT Chapter II directly with the EPO as IPEA, including for indicating the payment of fees related to the demand.