my3sons: I don't know what you mean by "their IDCC litigation against IDCC." I read the filing as the DOJ being against one particular claim in U-Blox's filing.
As I posted before, U-Blox is attempting to gain a license in order to create patent exhaustion making themselves very attractive to all of the manufacturers in the sector. I am glad to see the government taking a position in favor of a US inventor. Quite a shift from the last 15 years where foreign companies were treated with kid gloves.