Accelerated examination can, in principle, be requested at any time after the examining division has assumed responsibility for the application (Rule 10(2), (3)).
For PCT applications entering the European phase where the EPO also acted as (S)ISA, accelerated examination can, in principle, be requested at any time, for example
When accelerated examination is requested, the EPO makes every effort to issue the next office action within three months of receipt by the examining division of the application, the applicant's response under Rule 70a or Rule 161(1) or the request for accelerated examination (whichever is later).
The EPO strives to produce subsequent examination communications within three months of receipt of the applicant's reply, provided that the application is still being processed under the PACE programme (see E-VIII, 4E-VIII, 3).
Date retrieved: 24 November 2017