What kind of patent do NPEs prefer as a patent troll?

Non-practising entities, also known as NPEs, adopt lawsuits to collect authorization payments or/and settlement payments as their business models. Ascertaining which patent portfolio or patent layout and purchase strategy are suitable is an important topic of discussion for the NPEs who value operational performance. This study adopts the DigiTude company, an NPE, as the case study, exploring the patent lawsuits for this company and the industry. It looks at patent measurement and inspects the changes in supplementary, complementary and technology network centrality.