And about time. In the industry you have to budget substantial money for lawyers. Any thing your company makes will draw a troll, waving some obscure patent that should never have been granted, and demanding money or he will sue. The biggest score by trolls so far is $600 million extorted at lawyer point from the Blackberry makers back in 2006.
Trolls feed armies of lawyers, a noxious life form, and raise the price of everything.
This could be fixed. Change the law to allow challenging the validity of the patent at patent infringement trials. Most of the infamous patent cases revolved around truely awful patents, ones which were well known ideas (prior art) or so obvious that anyone "skilled in the art" would immediately do things that way 'cause its the obvious way to do things. We ought to clamp down on the patent office and insist that patents not be issued unless the idea is really new, really clever, and non obvious. We should stop "business methods" patents, and software patents. It is unreasonable to have lawyers quibbling over a patent on using one click to make a purchase on a website.