Section 97.12 - Number and filing date of an application(a) Applications shall be numbered and dated in sequence in the order received by the Office. Applicants will be informed in writing, by mail or email, as soon as practicable of the number and effective filing date of the application.(b) An applicant may claim the benefit of the filing date of a prior foreign application in accordance with section 55 of the Act. A certified copy of the foreign application shall be filed upon request made by the examiner. If a foreign application is not in the English language, an English translation, certified as accurate by a sworn or official translator, shall be submitted with the application.58 FR 42435, Aug. 9, 1993, as amended at 85 FR 431 , Jan. 6, 2020