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→Data Sources
The $500 billion of lost wealth is calculated by measuring the loss in stock price after the announcement of a patent lawsuit.
NPE list is taken from [[Patent Freedom https://www.patentfreedom.com/]], which is owned by RPX Corporation. RPX Corporation provides services to defend against NPE lawsuits.
RPX: "Since 2008, we have spent $2+ billion on patent assets, acquiring more than 15,000 US and international patent assets and rights."[http://www.rpxcorp.com/rpx-services/rpx-patent-sales/] RPX is an NPE.
====Critiques====
