Depending on how to define patent troll, yes or no. If you define patent troll as only someone who asserts clearly invalid patents or makes unsupported and unr

Depending on how to define patent troll, yes or no. If you define patent troll as only someone who asserts clearly invalid patents or makes unsupported and unreasonable assertions of infringement? No argument for their existence. But many of the so called patent trolls do assert facially valid patents with reasonable infringement theories. There is an argument that they provide liquidity and value to inventors who can't really afford to sue themselves. Lets say you invent a widget that reduces the cost of producing batteries by 10%. But you don't own a battery company so you can't monetize it. You can sell it to a troll who will do it for you. Or if you were a company that revolutionized the telecom industry, but missed the smartphone boat and went bankrupt. Those patents still have value and added to the industry. Trolls can get you that value. I'd still say that the patent laws don't really reward true innovation in most cases. But that goes for non-troll patents as well.