Congrats there Judge Posner. Now get ready for the inevitable trial when the CAFC overturns your ruling. You don’t like the patent system, tough beans. Congress and THE ONE just overhauled it and re-affirmed it. Apple and Google have every right to enforce their IP. These are not some random patent trolls. They sell products and legitimately believe the other party is infringing it’s rights.
These are the IPs that are being fought over right now. And it is patent trolling - bombard the patent office with thousands of patents, have them awarded as the patent office doesn't really care if the technology existed for more than decade before (clicking on a phone number and having it use the modem to dial was around on my C-64.., for example..), and when challenged says ‘take it to the courts.’
The biggest issue has been system patents and how they relate to software. The patent for making a purchase online - again, something I've done for more than two decades, is somehow a new intellectual property to patent and then go after others for doing it.
An example of the gross insanity of the present US patent system: http://www.google.com/patents/US6368227 - something that most every child has done on a swing. But it's now someone’s IP.