According to a post by Olddog on iHub IDCC is requesting info through the ITC regarding a request for info and depositions from Ericsson, Alcatel-Lucent, and Nokia Siemans regarding their base station operations.
Assuming at least part of the offending equipment is imported, I would say an ITC action against those boys would qualify as "one big showdown". And a validation that IDCC's air interface patents are included in the infrastructure would seem to prove infringement of the handsets, ALL of them.