Before which authority: County Court.
According to which procedure (state the applicable rules): Code of Civil Procedure
Within what timeframe: 3 years
However it should be added, that if the question on the enhanced probative value is contested, it is a dispute between the private parties. In case there is a question that the notary did not fulfil his/her obligations (e.g. showed a wrong date in the act or indicated that a person signed the document but was not actually there, etc.) then it might also be possible to bring disciplinary actions against a notary according to the Notaries Disciplinary Liability Act. In this case a complaint is submitted to the Ministry of Justice. A committee shall be formed for the establishment of disciplinary offences and the committee is composed of a judge, a notary and an official appointed by the Minister of Justice. The penalties imposed on notaries are imposed by the minister of justice based on the findings of the committee and they may be reprimand, fine or removal from office. Disciplinary proceedings may be initiated within 3 years.
