British company Imagination bought MIPS engineers for 300k$ per each one, plus 80+ core MIPS patents. The remaining 500 patents were sold for 350M$ to another company that's pure IP aka patent trolls. http://www.zdnet.com/chip-designer-mips-acquired-for-60m-patents-sold-for-350m-7000006969/
Not sure it is right to call Bridge Crossing LLC a patent troll. A significant portion of the funding for this came from ARM. The same was true for the Nortel patents acquired by Apple and Microsoft. Are they suddenly trolls?