The grounds for a petition for review have been exhaustively defined by the legislator, namely in Art. 112a(2) EPC in conjunction with R. 104 EPC (R 1/08; see also R 10/09, R 14/09, R 16/09, R 17/09, R 18/09, R 20/09, R 20/10, R 6/11, R 13/11, R 19/11, R 20/11, R 2/12 of 17 October 2012 date: 2012-10-17, R 18/12, R 4/13, R 5/13, R 5/14, R 7/14, R 9/14, R 6/15, R 3/16). What is not defined by the Implementing Regulations does not qualify as a procedural defect under Art. 112a(2)(d) EPC (R 16/09).
The erroneous application of a procedural rule, which does not in itself belong to the grounds for review enumerated in the EPC, can only be considered if it results in one of the procedural defects listed in Art. 112a(2) EPC in conjunction with R. 104 EPC (R 2/08, R 20/10, R 18/12). In R 8/16 the Enlarged Board noted that Art. 125 EPC expressly states that it is only applicable in the absence of procedural provisions in the EPC and held that for this reason it could not be the basis for extending the scope of Art. 112a EPC.
In particular, the following issues cannot be considered in review proceedings:
As R. 106 EPC implies, only procedural defects actually attributable to a board of appeal can be reviewed under Art. 112a EPC. Procedural defects that occurred in first instance proceedings may not be the subject of a petition for review (R 20/10, R 8/11; see also R 19/12 of 12 April 2016 date: 2016-04-12, R 3/16).
Source: http://www.epo.org/law-practice/legal-texts/html/caselaw/2019/e/clr_v_b_3_4_2.htm
Date retrieved: 17 May 2021