General
Since 1 July 2010 the EPO, in its capacity as an International Authority under the PCT, has acted not only as an ISA and an IPEA, but also as a Supplementary International Searching Authority (SISA). This chapter first sets out the procedure before the EPO acting as ISA, and at the end provides information on the procedure before the EPO acting as SISA (see points 275 ff). Chapter D provides information on the procedure before the EPO acting as IPEA.
Source: http://www.epo.org/applying/international/guide-for-applicants/html/e/ga_c_i.html
Date retrieved: 30 December 2018