This page describes the different procedures, or Routes, that were available in the DAS system prior to July 2012. There were three different procedures for Offices of First Filing (OFF) to make documents available in the system and for applicants to grant access to Offices of Second Filing (OSF). In fact, only two of the routes (A and C) have been used by the participating offices.
These options have been replaced in the DAS version 2.0 system in July 2012, which includes transition arrangements so that offices operating under the Routes A and C can continue to operate in the new system with minimal changes.
For offices which host documents in their own digital libraries and make the documents available to the service via automated remote access (web services).
Under routes A and C, the applicant is issued with an access code for each document and uses this access code to define an access control list to specify which offices of second filing may retrieve the document.