How soon after I file a request for retrieval of a priority document from the EPO should I see the image in PAIR?

It could take several months or longer. 

In order to maximize the likelihood of successful retrieval, the PDXPDX retrieval logic implemented by the USPTO requires the system to wait to transmit the retrieval request to the EPO until one of the following conditions has been met

1. The US application into which the priority document will be placed is at least 17 months old (counting from the earliest priority date or, if there is no priority, from the effective US filing date)

- OR-

2. The US application into which the priority document will be placed has been docketed to an examiner (i.e., PALM status ³30).

If a first retrieval request is unsuccessful, the system will generate another request when the second condition is met.

Consequently, several months could elapse between the time an applicant files a request for priority document retrieval and the actual transmission of the request to the EPO.