20. The method of claim 15 , further comprising displaying, in the user interface, a number of occurrences of the at least one unique keyword in the first prior art document.
15. A computer-implemented method utilizing at least one computer system for determining a potential point of novelty of a patent, the method comprising: electronically retrieving, from at least one database, at least one independent claim of the patent as issued; electronically retrieving, from the at least one database, at least one independent claim of the corresponding patent application as published; automatically comparing the at least one issued independent claim to the at least one published independent claim to identify at least one unique keyword present in the at least one issued independent claim but not present in the at least one published independent claim; cross-referencing the at least one identified unique keyword to a passage in the specification of the issued patent, wherein cross-referencing the at least one identified unique keyword to the passage in the specification of the issued patent uses input received from a user interface; identifying a first prior art document and a second prior art document; calculating an overlap score for the first prior art document based on at least one occurrence of the at least one unique keyword in the first prior art document; calculating an overlap score for the second prior art document based on at least one occurrence of the at least one unique keyword in the second prior art document; calculating a ranking for the first prior art document by comparing the calculated overlap score of the first prior art document to the calculated overlap score of the second prior art document; and displaying, in the user interface, a graphical representation of the calculated overlap score of the first prior art document and a graphical representation of the calculated overlap score of the second prior art document based on the ranking, and the passage in the specification of the issued patent.