The Patent Office of the Republic of Bulgaria shall be the designated office within the meaning of Art. 2 (xiii) of the Treaty whenever the Republic of Bulgaria has been designated in an international application.
For the purposes of opening a national phase, the applicant shall file the international application to the Patent Office within 31 months of the priority date, observing the requirements of art. 35. For applications where the Patent Office is the receiving office, application fees shall not be collected.
The Patent Office shall be the elected office under Art. 2 (xiv) of the Treaty whenever the Republic of Bulgaria has been elected by the applicant as the country in which he intends to use the results of the international preliminary examination.
In case of election of the Republic of Bulgaria the applicant shall file the documents provided for in Art. 69, para 2 on the opening of a national phase within 31 months of that date.
The report of the international preliminary examination must be translated into English according to Art. 36, para. 2 of the Treaty, if it is not in English or in Russian.