Representation in the procedure before the EPO as receiving Office
Information on the representation of the applicant(s) during the international phase is to be provided in Box No. IV of the PCT request form. Before filling in the box, applicants should carefully read the instructions provided in the Notes to the PCT request form concerning Box No. IV and the information given below (see points 98-115).
OJ 2010, 335
WIPO PCT Guide 11.001-11.014 
Two categories of representatives ("agents" in PCT terminology) have the right to practise before the EPO as receiving Office: 
any professional representative or association of representatives entered in the directory of professional representatives maintained by the EPO 
OJ 2013, 500, 535
any legal practitioner qualified to practise in patent matters in one of the EPC contracting states and who has his place of business in that state. 
Only a person belonging to at least one of these categories may be appointed as agent for an international application filed with the EPO as receiving Office (see points 35 ff). The directory of professional representatives can be consulted on the EPO website.[ 19 ]
The agent must always be mentioned by name in Box No. IV of the PCT request form, unless he belongs to an association of professional representatives registered as such with the EPO (see point 108). The agent may choose his address as he wishes on condition that it is in an EPC contracting state.

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