Key points
- Rule 43(2) does not apply in opposition. If claim 1 as granted is not inventive, you can split it up in two independent claims, with two different and unrelated features that each provide inventive step. The patentee did precisely this in the present case in Aux Req 1 before the OD. However, the procedural status becomes not so straightforward.
- The OD did not admit AR-1, the Board does admit it. The OD found AR-2 with only one of the two independent claims (of AR-1) to be allowable. The opponent did not appeal. Therefore, in AR-1 with two independent claims, only the second independent claim (claim 3) is open to examination in appeal.
IV. The decision was based on the claims of the patent as granted as main request and two auxiliary requests.
The differences in auxiliary request 1 compared to the main request, insofar as relevant to the present decision were that:
- Claim 1 specified the chemical nature of the initiating functional groups;
- Claim 3 - newly introduced as a further independent claim - differed from granted claim 1 by specifying that:
"said photoreactive polymer has at least five initiating functional groups on the dendritic polymer core".
Auxiliary request 2 differed from auxiliary request 1 in deletion of claim 3 with consequential renumbering of the remaining claims.
V. According to the decision the main request did not meet the requirements of Article 56 EPC. [] Auxiliary request 1, which had been filed during the oral proceedings was not admitted on the grounds that the amendment represented by claim 3 thereof, relying on features of the description, could not have been expected by the opponent.
Auxiliary request 2 also filed in the oral proceedings, but lacking claim 3 of the first auxiliary request was held to meet the requirements of Article 56 EPC since there was no incentive in the prior art to provide a photoreactive polymer having the defined initiator groups and co-initiators bound to a hyperbranched polymer core.
VI. The patent proprietor filed an appeal against the decision.
Reasons for the Decision
1. Admissibility of the main request.