1. A system comprising: an interface configured to communicate with a device through a network; a processor coupled to the interface; a memory accessible to the processor and storing a patent strength calculator and instructions that, when executed, cause the processor to: provide a graphical user interface (GUI) to the device through the network, the GUI including data related to a list of documents and including a plurality of user-selectable elements accessible by a user to select a patent strength calculator option from a plurality of patent strength calculators, and at least one user-selectable element accessible by the user to create a new patent strength calculator; receive user input corresponding to the first GUI indicating a selection of the patent strength calculator from the device through the network; apply the patent strength calculator to the list of documents in response to the user input to determine a patent strength score for each patent of the list, the patent strength calculator to determine the patent strength score for each patent of the list based at least in part one of a number of patent claims, a number of words in each claim, a number of citations cited in the patent, a number of other documents that cite to the patent, any litigation involving the patent, file history information associated with the patent, and a remaining term of the patent; and provide a second GUI to the device through the network, the second GUI including the list of documents including the patent strength score for each patent of the list based on the patent strength calculator.