The principles for dealing with amendments to opposed patents developed by the boards of appeal (see chapter IV.C.5.1.1 above) also apply to the filing of additional dependent or independent claims in opposition or subsequent appeal proceedings.
Source: http://www.epo.org/law-practice/legal-texts/html/caselaw/2019/e/clr_iv_c_5_1_5.htm
Date retrieved: 17 May 2021