Systems and methods for calculating a patent claim scope rating are disclosed. In an example embodiment, a method of calculating a patent claim scope rating includes identifying patent references cited in examination of a subject patent and storing the identified patent references as an applied art list, identifying first backward references for the patent references in the applied art list and storing the first backward references as a first backward list, identifying second backward references for the first backward references in the first backward list and storing the second backward references as a second backward list, identifying forward references for the patent references in the applied art list and storing the forward references as a forward list. A patent claim scope rating is based on a calculation including at least a partial combination listing of the applied art list, the first and second backward lists, and the forward list.