Abstract: Aspects of the present invention comprise using non-textual information in analyses of patent matters. In embodiments, patent matter similarity may comprise a combination of two or more metrics: (a) a metric that measures the textual similarity between an input patent portfolio and patent matters; (b) a metric that measures the behavior between portfolio patents and other patent matters at issue (e.g., which patents are asserted in the same proceeding with portfolio patents); (c) a metric that measures the textual similarity between the textual description and patent matters; and (d) a metric that inspects which patent matters are placed at issue by peer companies. In embodiments, patent matter similarity may be determined using textual similarity in combination with non-textual information.