https://www.epo.org/en/service-support/faq/searching-patents/european-patent-register-and-federated-register/federated-3
What does "invalidation date" mean?
Based on data provided by a national patent register, the "invalidation date" displayed could be one of the following dates, in this order:
- patent withdrawn
- patent revoked
- patent lapsed or
- patent expired.
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