Where the date of the first filing given on filing the European patent application precedes the date of filing of the European patent application by more than one year, the applicant must be informed by the Receiving Section that there shall be no priority for the application unless within a period of one month he indicates a corrected date lying within the year preceding the date of filing. Rules 84a and 85 apply to the priority period under Art. 87(1). In the event that the date indicated for the previous application is subsequent to or the same as the date of filing, the applicant should be allowed a period of one month for indicating a corrected date (with regard to the possibility of effecting correction of clerical or similar errors, see V, 3).