Three Boston University researchers have put a price tag on the cost of patent trolling in the US. The amount is a staggering $500 billion since 1990. In the past four years, the cost has averaged about $83 billion annually, amounting to more than 25 percent of US R&D spent over the time period....
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Source : http://feeds.electronista.com/click.phdo?i=df5d6e0...