RPX IS a patent troll. RPX Corporation is a spin-off of Intellectual Ventures. John Amster and Geoffrey Barker, the CEO and COO of RPX, came from high level positions inside Intellectual Ventures.

  http://pando.com/2013/09/09/rpx-and-the-complicated-business-of-stockpiling-patents-for-good-not-evil/

RPX and Intellectual Ventures bought the Kodak patent portfolio together:

  http://www.iam-magazine.com/blog/detail.aspx?g=4d1024d9-1e6c-43fa-8f78-a123f22575da
  http://www.ipwatchdog.com/2012/12/19/kodak-sells-patents-to-intellectual-ventures-rpx-for-525-million/id=31737/

RPX and Intellectual Ventures own a common NPE holding company RPX-LV:

  http://www.plainsite.org/flashlight/rpxlv-acquisition-llc/

RPX was sued by Kaspersky Labs for extortion:

  http://www.scribd.com/doc/56754406/RPX-Criminal-Complaint

RPX cannot be trusted anymore than Intellectual Ventures. RPX is playing the same game as Intellectual Ventures. There is a better than good chance that RPX and Intellectual Ventures are working together as evidenced by their co-ownership of patent property and shared personnel history. The Kaspersky complaint raises the specter of RPX (with or without Intellectual Ventures) playing a good cop, bad cop style extortion racquet.

How does that insurance look now?

Buyer beware!