In proceedings before the European Patent Office, following the publication of the European patent application, any third party may, in accordance with the Implementing Regulations, present observations concerning the patentability of the invention to which the application or patent relates. That person shall not be a party to the proceedings.
Amended by the Act revising the European Patent Convention of 29.11.2000.
Date retrieved: 17 May 2021
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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
XGL D IV 1.4.1 Deficiencies which may no longer be remedied, as a result of which the opposition is deemed not to have been filed
EPO Guidelines - E General Procedural Matters
EPO Guidelines - G Patentability
Offical Journal of the EPO
XOJ EPO 2017, A86 - Notice from the European Patent Office dated 5 July 2017 concerning the filing and processing of third-party observations under Article 115 EPC
XOJ EPO 2013, 150 - Notice from the European Patent Office dated 28 January 2013 concerning amended Rule 53(3) EPC
XOJ EPO 2012, 52 - Notice from the European Patent Office dated 13 December 2011 concerning amended Rule 71 and new Rule 71a EPC
XOJ EPO 2011, 420 - Notice from the European Patent Office dated 10 May 2011 concerning the filing of third party observations under Article 115 EPC by means of an online form
XOJ EPO 2011, 418 - Decision of the President of the European Patent Office dated 10 May 2011 concerning the filing of third party observations under Article 115 EPC by means of an online form 1