21.09.2011 00:50 Uhr, Quelle: MacNN

Patent trolls may have cost US companies $500 billion

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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