T 0222/85 - Notice of opposition must be sufficiently reasoned - #68

Citation rank: 68
No. of citations: 73

T 222/85 dealt the question of admissibility of an opposition, in particular the question how well the Grounds of Opposition must be explained in the Notice in order to comply with the requirement nowadays stated in Rule 76(2)(c) (then Rule 55(c) EPC1973) that the Notice is to contain "a statement of the extent to which the European patent is opposed and of the grounds on which the opposition is based, as well as an indication of the facts and evidence presented in support of these grounds".

The Board held that this requirement was only
satisfied if the contents of the notice of opposition were sufficient for the opponent's case
to be properly understood. The purpose of the requirement, in combination with the first two requirements of Rule 76(2), was to put the patentee and the opposition division in a situation where they knew what that case was about. They pointed out that, whereas the requirements of Rules 76(1) (a "written reasoned statement"), 76(2)(a) ("particulars of the opponent") and (b) ("number of the European patent") are merely formal in nature, the requirement of R. 76(2)(c) is a substantive requirement, which called for sufficient reasoning. A well-drafted opposition ought to contain reasoning that was full but concise. In general, the less reasoning that a notice of opposition contained, the greater the risk that it would be rejected as inadmissible.

The Board summarised the contents of the Notice of Opposition as follows:

' The notice of opposition sets out the following, under the heading "grounds": "The subject-matter of EP-5033, as defined in Claims 1 to 21 covers polyesters, coating compositions and paint compositions as currently described in the state of the art and/or applied in the field of art. The hydroxyl value, items (a) and (b), optional items (c) and (d), the weight percentages of cyclic moieties plus amide moieties, and the weight percentages of reactants with a functionality of 3 or more, as stated in Claim 1 of patent No. 5033 are quite conventional and generally known from the state of the art as represented by (for instance):" and there then followed a list of 16 prior published patent specifications. There then follows three paragraphs which allege that the feature of "high molecular weights" is an obvious aim, that methods of reaching high molecular weights are commonly known as disclosed for instance at two identified pages of a textbook, and that "according to opponent's measurements many known polyesters satisfy" the new parameter definition of molecular weight used in the opposed patent. Finally, it stated: "The polyesters, coating compositions and paint compositions as claimed in EP-5033 thus lack any novelty or inventive step, and are therefore not patentable in view of the articles of the EPC, in particular Articles 54 and 56." ' (point II of the Facts and Submission)

These Grounds were regarded insufficient and the opposition was held inadmissible. The corresponding appeal was thus rejected.

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Headnote 2:

2. The requirement under Rule 55(c) EPC [now R. 76(2)(c) EPC], that the notice of opposition shall, inter alia, contain "an indication of facts, evidence and arguments presented in support of the ground" is only satisfied if the contents of such notice are sufficient for the opponent's case to be properly understood on an objective basis.

The full text of the decision can be found here.