R.53 EPC Priority documents

An applicant claiming priority shall file a copy of the previous application within sixteen months of the earliest priority date claimed. This copy and the date of filing of the previous application shall be certified as correct by the authority with which that application was filed. 
The copy of the previous application shall be deemed to be duly filed if a copy of that application available to the European Patent Office is to be included in the file of the European patent application under the conditions determined by the President of the European Patent Office. 
Where the previous application is not in an official language of the European Patent Office and the validity of the priority claim is relevant to the determination of the patentability of the invention concerned, the European Patent Office shall invite the applicant for or proprietor of the European patent to file a translation of that application into one of the official languages within a period to be specified. Alternatively, a declaration may be submitted that the European patent application is a complete translation of the previous application. Paragraph 2 shall apply mutatis mutandis. If a requested translation of a previous application is not filed in due time, the right of priority for the European patent application or for the European patent with respect to that application shall be lost. The applicant for or proprietor of the European patent shall be informed accordingly.
[ Art. 88 90 R. 2 57 59 163 ]
See decision of the President of the EPO of 12.07.2007 concerning the filing of priority documents for European divisional applications and for new European patent applications under Article 61(1)(b) EPC (Special edition No. 3, OJ EPO 2007, B.2).
See decision of the President of the EPO of 31.03.2020 on the filing of priority documents (OJ EPO 2020, A57) and notice from the EPO of 22.02.2019 concerning priority document exchange via the WIPO Digital Access Service (OJ EPO 2019, A27).
Amended by decision of the Administrative Council CA/D 7/12 of 27.06.2012 (OJ EPO 2012, 442), which entered into force on 01.04.2013.
See notice from the EPO of 28.01.2013 (OJ EPO 2013, 150).

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EPC Articles

EPC Implementing Rules

EPO Guidelines - A Formalities Examination

EPO Guidelines - B Search

EPO Guidelines - C Procedureal Aspects of Substantive Examination

EPO Guidelines - D Opposition and Limitation/Revocation Procedures

EPO Guidelines - E General Procedural Matters

EPO Guidelines - F The European Patent Application

EPO Guidelines - G Patentability

EPO Guide for Applicants, part II Int. - C The EPO as ISA and SISA

Offical Journal of the EPO

Case Law Book: II Conditions to be met by an Application

Case Law Book: III Amendments

Case Law Book: IV Divisional Applications