Rule 80[ 89 ]
Amendment of the European patent

Without prejudice to Rule 138, the description, claims and drawings may be amended, provided that the amendments are occasioned by a ground for opposition under Article 100, even if that ground has not been invoked by the opponent.
See decisions of the Enlarged Board of Appeal G 1/99, G 3/14 (Annex I).

Art. 101, 105, 123
R. 89, 137

Cross-reference list
EPC EPC 1973
R. 80R. 57a

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