5.3. Opposition

The board in T 290/90 (OJ 1992, 368) decided that to be granted a 20% reduction in the opposition fee under R. 6(3) EPC 1973, that part of a notice of opposition which was governed by R. 55(c) EPC 1973 (R. 76(2)(c) EPC) should always be filed in a non-official authorised language. It was inadmissible for a German opponent to file an opposition in the Dutch language even if represented by a Dutch patent attorney (T 149/85, OJ 1986, 103).

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