Article 91
(1) A patent or a utility model application includes one single invention or a group of inventions which are gathered to form a single general inventive concept. The applications which do not meet the requirements of this provision shall be divided into separate applications upon the applicant’s request or the notification of the Office.
(2) Divisional application can be filed for every application upon the applicant’s request regardless of the unity of the invention.
(3) The divisional application shall be filed in a way that it shall not go beyond the extent of this subject of the application in relation to the application being processed. The annual fees remaining from the past years shall be paid, too, together with the divisional application.
(4) The application date for every divisional application shall be the date of the first application. If a priority right was claimed with the first application, every divided application shall be entitled to this right.
(5) Other procedure and rules regarding divided applications shall be determined by a regulation.
(6) The divisional applications which are not filed in accordance with this article shall not be admitted for process.