“…On the other hand, we note that there is still little information known for the long time behaviour of solutions to the DPHVIs. For this reason, stated as theorem 5.5 in our present paper, we would like to fill a gap and study the existence of a pullback attractor for the multivalued process (m-process) governed by an extension of the DPHVI (1.1)-(1.3) by applying the framework developed in [7,11,39,40], which is the most main novelties in comparison with Migórski and Zeng [32]. The manuscript is structured as follows.…”