https://www.epo.org/en/node/foundation

Legal foundations and member states

Legal foundations

The basis upon which the European Patent Organisation was set up.

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Member states

States which are currently members of the European Patent Organisation.

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Extension states

States with which the European Patent Organisation has signed an extension agreement.

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Validation states

States with which the European Patent Organisation has signed a validation agreement.

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Map showing the member states in color red and extension states in blue

The 39 member states of the EPO (dark red), also including one extension state (dark grey) and five validation states (turquoise).