T 0132/83 01-10-1987

1. The appeal complies with Articles 106-108 and Rule 64 EPC and is, therefore, admissible.

2. No formal objection arises against the documents on file.

2.1. The subject-matter of Claim 1 is clearly disclosed in the original application documents and this claim therefore meets the requirement of Article 123(2) EPC.

This applies even to the feature that the contact cantilever finger (8) projects "between" the folded over arm portions (6), i.e. that it is smaller than the gap between them. This feature is disclosed in Figure 2 showing, according to the description, a cross-sectional view of a coupling in accordance with the invention.

For disclosure it is not necessary that this feature is explicitly described in the original specification as having a particular significance. It suffices that it can be clearly and unambiguously derived, albeit only from the drawing, as being a feature of an embodiment of the invention.

2.2. Claim 1 clearly restricts the subject-matter of Claim 1 as patented by additional features and does not, therefore, extend the protection conferred. Consequently, it complies also with Article 123(3) EPC.

3. The novelty of the subject-matter of Claim 1 in the sense of Article 54 EPC is not disputed by the respondent. It is clearly given, and this statement requires no further reasoning.

4. Given that in this situation the reason for the decision under appeal has been removed, the Board has, of course, considered remitting the case, within its discretion under Article 111(1), second sentence, EPC, to the first instance for further prosecution, in particular examination as to inventive step, without giving its own opinion on that issue.

It has, however, decided not to execute this discretion in view of the fact that the Opposition Division made it clear in its decision that it considered an even less restricted Claim 1 as hardly objectionable under Article 56 EPC, whence it can be derived that it would consider the subject-matter of present, even more restricted, Claim 1 as patentable.

5. In respect of inventive step, the Board has, after careful consideration of all relevant facts and submissions, come to the conclusion that the subject-matter of Claim 1 is unobvious.

5.1. Although it is considered obvious to combine the teachings of some of the prior art documents in the sense that the skilled person would consider applying features known from one or more documents in a coupling known from another one and also applying in this transfer of features his general knowledge, this would not seem to result in a coupling as now claimed.

5.2. More particularly, in the opinion of the Board, it would well be obvious to the skilled person seeking to improve the coupling of US-A-2 794 963 in respect of its latching/unlatching properties, to apply the teaching of GB-A-1 463 751 in this respect by shaping the detent catch (39 in US) correspondingly (6 in GB) and construct a housing for the US connector (13) with a sloping surface (principally similar to 24 in GB, but inverted) allowing the lifting of the end of the tongue (115 in US). The engagement (at 121) of the tongue with the folded over legs (119) would not be a principle obstacle for such an application of features, but only a relative one which might be overcome by mere adjustment of the connector parts.

5.3. It would not, however, follow from any one of these two documents, or from any of the others cited in this procedure, as obvious that the skilled person could, and should, dimension the cantilever finger principally smaller than the gap between the folded over arms portions so that it can freely be pushed upwards between these arms portions, without being pressed against them, by the inserted terminal. The skilled person certainly would not do so in view of the cited prior art.

5.4. Although the possibly different kind of application of contact force in the claimed coupling might be of relevance for its performance when compared with the prior art couplings, this is not really a deciding factor in the reasoning given in paragraph 5.3 above.

It suffices to state that the claimed coupling allows to apply independent contact forces by the folded over arms portions and by the cantilever finger. This is not so in US-A-2 794 963 and it would not be so if, as pointed out above, the teaching of GB-A-1 463 751, as far as the latching/unlatching features are concerned, is applied to the US coupling.

5.5. It is not so clear that it would be equally obvious to apply, in reversal of the argumentation at paragraph 5.2 above, the teaching of US-A-2 794 963, with its forwardly projecting finger, to the coupling of GB-A-1 463 751.

Such application would appear somewhat unmotivated and this would seem to be confirmed by the submission that even the later GB-A-1 531 033 adhered to a rearwardly projecting finger.

5.6. However this may be, the most natural result of a skilled person's attempt to apply a forwardly projecting finger (as in US-A-2 794 963) in the coupling of GB-A-1 463 751, would not seem to be the coupling as claimed.

It would appear to consist in a coupling of generally the construction of Figure 3 of the GB citation only modified in that the finger is linked on the right hand side and its free end extends to the left hand side, with a sloping surface (similar to 24) of the housing (17) being formed in the region of the (left hand sided) end of the finger. The terminal (11) would still have to be inserted above, and not, as in the claimed coupling, below the finger, and the latter would not project between the folded over arms portions.

It would be correct to state that the connector of the claimed coupling is insofar equivalent to this allegedly obvious connector as contact force is independently applied by the folded over arms portions and by the cantilever finger. However, it appears directly from the GB citation that the arms portion (3) would apply contact force from above, and the cantilever finger (4) from below, and that this results in a subtraction of forces on the flange edges (10) of the base (1) and not, as in the claimed invention, in their addition.

5.7. The Board has reviewed the arguments submitted in support of the respondent's allegation of lack of inventive step and which would be apt of refuting the above developed view of the Board. Such counter-arguments have not, however, been found, as will be shown as follows:

5.7.1. Most of the respondent's earlier submissions, including those contained in Professor Blanco's affidavit, were not directed against a claim restricted, as the present Claim 1, by the feature of the cantilever finger projecting between the folded over arms portions. Insofar as these submissions do not contain an argument related to this feature, they need not be dealt with in detail.

5.7.2. It is observed that where Professor Blanco gives his opinion that a "Burndy" coupling is easily obtained when combining different prior art, he does not specifically deal with the aforementioned feature of the cantilever finger projecting between the folded over arms portions. On page 23, first paragraph, he cites several features of the "Burndy" product but not the one mentioned above.

By referring to "the separate and independent electrical and mechanical functions of '727" he did refer to couplings of the kind as in GB-A-1 463 751 (and in later GB-A-1 531 033) where the cantilever finger applies its contact force, if any, independently of the folded over arms portion. However, from this alone it cannot be concluded that the skilled person, when combining this (GB) prior art with the (US) prior art using a forwardly projecting cantilever finger in either of the allegedly obvious ways set forth at paragraphs 5.2 and above, would additionally modify the cantilever finger in the claimed way, so as to achieve the new result that the contact forces independently applied by the folded over arms portions and by the cantilever finger are added and not subtracted (cf. paragraph 5.6).

5.7.3 In respect of this latter feature of the claimed coupling it appears that no other argument against the above view than the contention that it is self-evident has been brought in by the respondent.

This contention of self-evidence cannot, however, be accepted for the reason that neither the obvious combination dealt with at paragraph 5.2 above would lead to this feature nor the allegedly obvious combination dealt with at paragraph 5.5 above (cf. paragraphs 5.3 and 5.6).

5.7.4. The fact that this feature was not explicitly described in the original specification may be regarded as an indication of the Appellants' original personal view on the possible importance, or non-importance, of this feature in later procedures, but not as an objective proof for obviousness based on the prior art.

5.7.5. No such proof can, further, be seen in any reservations the Board expressed in respect of claims which have been abandoned, or in any temporary lack of appreciation of the degree of significance of the cantilever finger for contact force.

5.7.6. In view of the above, the opinion which Mr Simmons expressed in his affidavit appears to be an unsupported assertion. His submission that the only difference of the present claim from an earlier one (C, last filed on 10 March 1986) was commonly known and self-evident to him, was not accompanied by any documentation in respect of this difference. It is noted that this difference relates to the specific feature that the cantilever finger projects between the folded over arms portions. The fact that he might have rejected possibilities which he alleges corresponded to the claimed invention and which he found obvious, does not therefore constitute proof of obviousness of the application of this feature in a coupling having all the other features of Claim 1.

5.8. For these reasons the Board concludes that Claim 1 meets the requirement that its subject-matter involves an inventive step in the sense of Article 56 EPC and is, therefore, patentable within the terms of Article 52(1) EPC.

Maintenance of the patent on the basis of such an independent claim is, therefore, required.

6. No objection arises, in this circumstance, against any of the patent documents on file except for clerical errors in Claim 2 and the description.

7. It has been decided by other Boards of Appeal that after oral proceedings in connection with an opposition the parties must be informed and invited to state their observations concerning the maintenance of the European patent in the amended form within a period of one month in accordance with Rule 58(4) EPC only if they cannot reasonably be expected to do so definitely during the oral proceedings (T 219/83, OJ 7/86, 211; T 185/84, OJ 11/86, 373). The Board agrees with this legal opinion.

In the present case, the Board informed, after an intermediate deliberation during the oral proceedings, the parties of its provisional view that the patent might be maintainable on the basis of the present claims, and invited the parties to state their relevant observations, which they did. Moreover, the parties were given the opportunity to file final observations in this respect within a period of two months (for the respondent) or four months (for the Appellant in reply to the respondent's observations). In this circumstance, the condition under which a further, formal, information and invitation pursuant to Rule 58(4) EPC is dispensable, is clearly fulfilled.

Apart from the requirement under its item (b), all the other requirements of Article 102(3) EPC being fulfilled, a decision in conjunction with Rule 66(1) EPC can now be taken.