19. The computer-implemented method of either of claims 12 or 13 , wherein the step of searching through the database to locate a source document containing the selected number comprises searching for the source document that has a date that falls within at least one of the following date ranges: (a) a time period extending before and after the target entity's filing date for the source document containing the selected number, (b) a time period extending before the target entity's filing date for the source document containing the selected number; and (c) a time period extending after the target entity's filing date for the source document containing the selected number.
19. The computer-implemented method of either of claims 12 or 13 , wherein the step of searching through the database to locate a source document containing the selected number comprises searching for the source document that has a date that falls within at least one of the following date ranges: (a) a time period extending before and after the target entity's filing date for the source document containing the selected number, (b) a time period extending before the target entity's filing date for the source document containing the selected number; and (c) a time period extending after the target entity's filing date for the source document containing the selected number. 20. The computer-implemented method of claim 19 , wherein if two or more documents are located having a date that falls within the date range, the step of searching through the database to locate a source document containing the selected number further comprises determining which of the two or more documents has the most recent date.