"Hedge funds, 'reverse trolls' crushing biopharma innovation
Prior to September 2012, a company faced with a patent-infringement lawsuit brought by a patent troll (an entity that acquires patents just to seek cash payouts from other patent holders), your only recourse to invalidate the troll's nuisance patent was through the federal courts—a very costly and time- consuming effort..."
http://www.cnbc.com/2015/07/22/biopharma-hammered-by-hedge-funds-reverse-trolls-commentary.html
Prior to September 2012, a company faced with a patent-infringement lawsuit brought by a patent troll (an entity that acquires patents just to seek cash payouts from other patent holders), your only recourse to invalidate the troll's nuisance patent was through the federal courts—a very costly and time- consuming effort..."
http://www.cnbc.com/2015/07/22/biopharma-hammered-by-hedge-funds-reverse-trolls-commentary.html