It depends on the company. Novatel for instance does not have the deep pockets of a Lucent. They are now producing UTMS products which infringe on IDCC's patents.
"Novatel Wireless, Inc. (Nasdaq: NVTL), a leading provider of wireless broadband access solutions, today announced the Federal Communications Commission (FCC) regulatory approval of the Merlin U520(TM) Wireless PC Card Modem based on Universal Mobile Telecommunications System (UMTS) technology."
Why would they spend money to defend a law suit that they will lose? I do not beleive they have much in the way of past due infringement money that they would have to pay so why not sign.
I fully expect this to get done soon. The revenue is probably not very relavant but the actual signing of another company will only advance IDCC's momentum.