The practice before the boards of appeal is that all requests by parties, including any requests as to costs, should be made before any decision is announced in oral proceedings, as the decision on apportionment is part of the final decision (see R. 88(1) EPC re opposition proceedings). In T 212/88 (OJ 1992, 28), though, by way of exception the request for apportionment was also considered later, because at that time this practice had not been published and the parties were therefore unaware of it.
There is no basis for deciding on a different apportionment of costs if the party which would benefit from the decision did not request apportionment and even made it known that it would not enforce any such decision (T 408/91, T 125/93).
A request for apportionment of costs submitted by the respondent merely as a party to the appeal proceedings as of right (Art. 107, second sentence, EPC 1973) must be rejected as inadmissible as it would otherwise contravene the principle of equal treatment (T 753/92, T 514/01, T 1237/05).
In several decisions, the boards of appeal have stressed the importance of submitting evidence to support a request for a different apportionment of costs (e.g. T 49/86, T 193/87, T 212/88, OJ 1992, 28; T 404/89, T 523/89, T 705/90, T 776/90, T 306/93). Thus in T 896/92 the request for a different apportionment of costs was rejected for lack of substantiation and because of the absence of obvious reasons. In T 193/87 (OJ 1993, 207) the board likewise refused to apportion costs because the respondents had provided no evidence and it was unable to see any reasons of equity that might have justified such an apportionment.