Blue Spike LLC is a patent litigation factory. At one point, it filed over 45 cases in two weeks. It has sued a who’s who of technology companies, ranging from giants to startups, Adobe to Zeitera. Blue Spike claims not to be a troll, but any legitimate business it has pales in comparison to its patent litigation. It says it owns a “revolutionary technology” it refers to as “signal abstracting.” On close inspection, however, its patents1 turn out to be nothing more than a nebulous wish list. Blue Spike’s massive litigation campaign is a perfect example of how vague and abstract software patents tax innovation.