I spend a good deal of time monitoring trends in patents and patent applications. Along with reading most any news articles related to patents. They can be a good gauge to determine future technological convergences and rates at which GNR is accelerating. More recently in the news there is much discussion of “defensive patents” and patent trolls who do not invent anything. They just own a lot of patent rights and make money by suing (or threatening to sue) startups and companies creating new technologies that may fall under their broad patents.