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Any observations by a third party shall be filed in writing in an official language of the European Patent Office and state the grounds on which they are based. Rule 3, paragraph 3, shall apply.
(2)
Any such observations shall be communicated to the applicant for or proprietor of the patent, who may comment on them.
See decision of the President of the EPO and notice from the EPO of 10.05.2011 concerning the filing of third party observations under Article 115 EPC by means of an online form (OJ EPO 2011, 418, 420).
