Since 1 July 2010 the EPO, in its capacity as an International Authority under the PCT, acts 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 274 ff).
Chapter D provides information on the procedure before the EPO acting as IPEA.