Software patents impose a deadweight loss on the economy
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Judge Haldane Mayer made an exceptionally clear statement in the case of Intellectual Ventures vs Symantec and Trend Micro:
http://www.cafc.uscourts.gov/sites/default/files/opinions-orders/15-1769.Opinion.9-28-2016.1.PDFDidn't read much of the original document but an extensive German article about this.