Opening of the will at the Nachlassgericht
You do not have to apply for anything — but you must deliver it
The opening of the will is not an application procedure. The Nachlassgericht (probate court) acts of its own motion as soon as it learns of the death — for wills held in official custody, automatically via the Central Register of Wills, otherwise through delivery by whoever possesses the will. You therefore do not have to apply for anything; what you must do is the other side of the coin.
This is because § 2259 BGB obliges anyone who possesses a will to deliver it to the Nachlassgericht without delay after the testator's death — even if it disadvantages them, and even if they consider it invalid. Anyone who withholds or destroys a will risks not only compensation claims but criminal consequences for suppression of documents.
At the opening, the will is read out or notified to the participants; they receive a copy and the record of the opening (Eröffnungsprotokoll). This record is actually the valuable part: together with a notarial will, it replaces the Erbschein (certificate of inheritance) in many cases as far as the Grundbuchamt (land registry) is concerned. The opening itself, however, says nothing about whether the will is valid — at the opening, the court examines neither its form nor its content.
