Rule 163
Examination of certain formal requirements by the European Patent Office

(1) Where the designation of the inventor under Rule 19, paragraph 1, has not yet been made within the period under Rule 159, paragraph 1, the European Patent Office shall invite the applicant to make the designation within two months.

(2)¹⁷⁹ Where the priority of an earlier application is claimed and the file number of the previous application or the copy thereof provided for in Rule 52, paragraph 1, and Rule 53 have not yet been submitted within the period under Rule 159, paragraph 1, the European Patent Office shall invite the applicant to furnish that number or copy within two months. Rule 53, paragraph 2, shall apply.

(3)¹⁸⁰ Where, at the expiry of the period under Rule 159, paragraph 1, a sequence listing complying with the standard provided for in the Administrative Instructions under the PCT is not available to the European Patent Office, the applicant shall be invited to file a sequence listing complying with the rules laid down by the President of the European Patent Office within two months. Rule 30, paragraphs 2 and Rule 30, paragraphs 3, shall apply mutatis mutandis.

(4) Where, at the expiry of the period under Rule 159, paragraph 1, the address, the nationality or the State in which his residence or principal place of business is located is missing in respect of any applicant, the European Patent Office shall invite the applicant to furnish these indications within two months.

(5) Where, at the expiry of the period under Rule 159, paragraph 1, the requirements of Article 133, paragraph 2, have not been satisfied, the European Patent Office shall invite the applicant to appoint a professional representative within two months.

(6) If the deficiencies noted under paragraphs 1, paragraphs 4 or paragraphs 5 are not corrected in due time, the European patent application shall be refused. If the deficiency noted under paragraph 2 is not corrected in due time, the right of priority shall be lost for the application.