3.3.2 Informal clarification by written request

Alternatively, a written request for clarification can be sent. This is in particular appropriate when dealing with non-European representatives due to potential time zone differences and linguistic problems, and/or when the issue to be discussed is not suitable for a telephone consultation.

Where the applicant is registered for the EPO Mailbox service and/or PCT Link, the written request will be sent to the Mailbox. Where the applicant is not so registered, the written request is sent by regular mail and an email is also sent to the applicant to inform them accordingly. If an email address for the applicant is not available, the EPO acting as ISA may contact them by telephone to request one. Only if one is provided will an email be sent.