Two of the attorney generals, Bill Sorrell of Vermont and Jon Bruning of Nebraska, mentioned MPHJ Technologies which Inside Counsel claims is  'perhaps the most notorious NPE [non-practicing entity] in operation in the USA today'.  Inside Counsel continued: 'They pointed out that the company’s practices are outrageous, sending out hundreds, perhaps thousands of demand letters to companies of all sizes.' The attorney generals agreed that such behaviour goes far beyond 'the normal scope of patent rights protection'. Source: Inside Counsel