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European Patent Convention (EPC 1973)

A revised version of the European Patent Convention entered into force on 13 December 2007. The provisions of the revised Convention apply unless the transitional provisions provide for the applicability of the EPC 1973.

Rule 57a 85

Amendment of the European patent

Art. 123
R. 86

Without prejudice to Rule 87, the description, claims and drawings may be amended, provided that the amendments are occasioned by grounds for opposition specified in Article 100, even if the respective ground has not been invoked by the opponent.

85 Inserted by decision of the Administrative Council of 13.12.1994 which entered into force on 01.06.1995 (OJ EPO 1995, 9 ff). See decision of the Enlarged Board of Appeal G 1/99 (Annex I).

Cross-reference list
R. 57a R. 80