The proceedings may continue without the duly summoned but non-attending party (R. 115(2) EPC, R. 71(2) EPC 1973). The case law of the boards demonstrates, however, that the non-attending party's right to be heard under Art. 113 EPC must not be ignored.
Source: http://www.epo.org/law-practice/legal-texts/html/caselaw/2019/e/clr_iii_b_2_7.htm
Date retrieved: 17 May 2021