If a response is mandatory, the applicant must respond to the
Rule 161 EPC/
Rule 162 EPC communication within the six-month time limit set therein, unless a substantive response has already been submitted. For the purpose of
Rule 161(1) EPC new amendments filed on entry into the European phase and up to the time the
Rule 161 EPC/
Rule 162 EPC communication is issued are held to constitute a response on condition that the applicant has indicated - preferably in Box 6 of Form 1200 - that they form the basis for prosecution of the application in the European phase.