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For a summary of the contracting states' chief national provisions governing compulsory and optional filing of patent applications with central industrial property offices and other competent authorities, see Table II in National law relating to the EPC (see point 2.1.004). This table also contains the addresses of the central industrial property offices (see epo.org/law-practice/legal-texts/html/natlaw/en/ii/index.htm).
Note: European divisional applications must always be filed with the EPO (see point 5.8.001 ff).