"Did these companies know about the Ledzius/ Mostek prior art? The prior art that the PTO recently has reviewed and determined to raise substantial questions with regard to the patent?"

MM. no. These companies and their lawyers do no DD and would rather just pay millions to the first company threating a lawsuit about something they know about. I mean Intel /AMD probably did not know what microprocessor is.... better yet a poster named Cigar knows much more. Should send your resume over there man..make some nice change instead of playing the stock.

Your entertaining.... working late hours... looks like you convinced yourself not to buy good job superman.