8.4 Surrender of patent 

A patent may not be surrenderedProprietors cannot surrender their patent in opposition proceedings by the proprietorby filing a declaration of surrender with the EPO. A surrender must be declared before the competent authorities in the designated states in question (see D‑VII, 5.1). Nevertheless, if a proprietor unambiguously declares the surrender (or abandonment or renunciation) of the patent before the EPO, this is deemed equivalent to a request that the patent be revoked (see also D‑VIII, 1.2.5).