This is a four part analysis of "the relation between patents and the different business models used by firms in the software industry." The article traces the history of software patents. It also examines the role of a firms business model with respect to how patents are used, and how a firm may advocate for changes to the patent system (e.g. litigation reform). The authors advocate using caution when reforming the patent system because there could be unintended consequences to the benefit/detriment of firms in business today.