Here are my thoughts on the Siemens deal:
Royalty Rate: Siemens finally decided it was best to pay up and license VHC technology for a reasonable royalty rate. I would bet the royalty is more than 1% just based on what the other VoIP / Unified Communication licensees agreed to. This is significant because it will prove that yet another player in the industry is validating the worth of VHC's security technology in the VoIP / UC world. All other VoIP and UC companies out there are watching carefully as their peers sign these deals for royalty rates 1%. That's what kind of deal they will be asked to sign when VirnetX is done litigating. Licenses are tangible evidence that these patents hold value.
Trial with Cisco: Siemens is making a wise move by stepping aside before the trial starts. There is no reason to get tangled up with Cisco's mess, and that's exactly what would happen.
USPTO Reexams: Siemens agreeing at this stage tells me they do not believe the USPTO process is close to completion or that they have hope in the USPTO to invalidate all of the VirnetX patents.
Apple Workaround: The timing also tells me they do not believe Apple's workaround is cost-effective or efficient, otherwise they would implement it on their own products since VoIP / UC use the same base protocol. As I have stated before, I believe the Apple workaround is bogus.
I see the Siemens deal as another piece of the long-term business model that VirnetX management is executing. VirnetX is building a customer base assertively through litigation, and in time I believe this will lead to willing licensees. Up next, Cisco and Avaya...