https://www.epo.org/en/service-support/faq/applying-patent/cnipa-epo-pilot-programme/conditions-participating-cnipa-epo-4
What fees do I have to pay to participate in the pilot?
There is no special, additional fee for participating in the pilot. You simply have to pay the fees normally due on filing of an international application, i.e.:
- a transmittal fee (for applications filed with the IB acting as receiving Office).
- the international filing fee, collected by the receiving Office on behalf of the IB. The international filing fee is currently 1 300 Swiss francs (CHF).
- the international search fee. Please read the dedicated section below for more information about the international search fee due to the EPO acting as ISA.
If you later file a demand for international preliminary examination, you will additionally have to pay a preliminary examination fee and a handling fee. If you have selected the EPO as your ISA upon filing, please note that the EPO is the only competent International Preliminary Examining Authority.
For more information on the various fee amounts, please see PCT Fee Table.