No they are not allowed to restrict the period that you can give notice.
As long as they have recieved it in writing, before the last possible date, it is binding for both.
§ 130 (1) Sentence 1 BGB:
A declaration of intent that is to be made to another becomes effective, if made in his absence, at the point of time when this declaration reaches him.
So the trader must recieve this notice in cases such as these
- a confirmation that serves as proof for any court is needed
They say, that a termination notice prior to those 30 days cannot be noted in their system.
Allthough thre Civil Code forsees that a notice period (Kündigungfrist) can be agreed by the 2 parties.
Duden defines Kündigungfrist as:
Frist bis zum Wirksamwerden einer ausgesprochenen Kündigung
Deadline until a notice of termination becomes effective
So a notice (Kündigung) must be arrive before the notice period starts.
The Civil Code contains no construction allowing that a notice can only be given during a range of dates
- such as between 30 to 60 days
So, if you send the notice 90 days beforehand:
- Tough luck for them, that is not your problem.
Sending of notice:
The notice (§ 130 BGB) must be made in a text form (§ 312h BGB).
Since privatization the Post Office will no longer confirm (notarised) the letter being sent, by stamping a copy before the sealing of the letter.
A Conformation that the letter has arrived must exist if this is to be used as proof acceptable in court.
A notice is only valid after it has be recieved before the last possible date, which can be any time before that date.
The letter sent as a Einschreiben mit Rückschein (Registered with confirmation), is therefore no longer an option due to the lack of a notarised copy of what is in the letter.
Both forms of Einschreiben required that the reciever confirms the reception of the letter
The difference between a normal Einschreiben and a third option: Einwurf-Einschreiben is that a confirmation will exist that the letter was delivered (Auslieferungsbelegs, delivery receipt) - but still without proof of what is in the letter
Where a confirmation is needed, a solution based on § 194 ZPO is needed.
Wenn es für die Privatperson auch auf den Inhalt des Kuverts ankommt, sollte besser eine Zustellung durch den Gerichtsvollzieher erfolgen.
If it is also the content of the contribution to the individual person, a delivering should be done by the court-appointed enforcement officer.
This is, unfortunately, much more complicated (and more costly) and takes longer (8-10 days) than the service no longer offered by the privitised Post Office
- Amtsgericht (local court) of the reciever is responsible
Calling them beforhand is adviced to clarify how the procedure should be correctly done.
German Civil Code - Bürgerlichgesetzbuch (BGB)
Effectiveness of a declaration of intent to absent parties
(1) A declaration of intent that is to be made to another becomes effective, if made in his absence, at the point of time when this declaration reaches him. It does not become effective if a revocation reaches the other previously or at the same time.
(2) The effectiveness of a declaration of intent is not affected if the person declaring dies or loses capacity to contract after making a declaration.
(3) These provisions apply even if the declaration of intent is to be made to a public authority.
Periods of time and fixed dates
Beginning of a period of time
(1) If a period commences on the occurrence of an event or at a point of time falling in the course of a day, then the day on which the event or point of time occurs is not included in the calculation of the period.
(2) If the beginning of a day is the determining point of time for the commencement of a period, then this day is included in the calculation of the period. The same applies to the date of birth when the age of a person is calculated.
German Code of Civil Procedure - Zivilprozessordnung (ZPO)
Service of records or documents by a court-appointed enforcement officer
(1) The service of documents to be performed at the instigation of the parties shall be performed by the court-appointed enforcement officer subject to the stipulations set out in sections 193 and 194.
(2) The party shall physically submit to the court-appointed enforcement officer the document to be served, along with the required copies. The court-appointed enforcement officer shall certify the copies; he may prepare any lacking copies himself.
(3) In proceedings before the local court (Amtsgericht, AG), the party may charge, with the assistance of the registry of the court hearing the case, the court-appointed enforcement officer with serving the documents. In this context, the court registry is to charge the court-appointed enforcement officer with the service.
Implementation of service
(1) On the original copy of the document to be served, or on the form provided for this purpose that is to be attached to the original copy of the document, the court-appointed enforcement officer shall attest that the document has been served pursuant to section 182 (2), and he shall note in said attestation the name of the person on behalf of whom he has performed such service. Where service is effected by mailing the document, the date and the address at which the document was mailed are to be noted.
(2) The court-appointed enforcement officer shall note, on the document to be physically submitted, the date on which it was served, unless he physically submits a certified copy of the record of service.
(3) The record of service is to be transmitted to the party on behalf of whom the documents were served.
Instructions to serve records or documents or documents
(1) If the court-appointed enforcement officer charges the postal service with serving the documents, he shall note on the document to be served the person or entity on whose behalf he is submitting said documents to the postal service. He shall attest on the original of the document to be served, or on a handover form to be attached to the original document, that the postal item has been submitted to the postal service, and that it bears: the address of the party to whom the document is to be served, the designation of the court-appointed enforcement officer so serving it, and a reference number.
(2) The postal service shall return the record of service to the court-appointed enforcement officer without undue delay.
Sources: (in German)