Patent ID: 6981216

Claim:
A computer implemented method of generating a subpoena document requesting information about an unknown subscriber from a telephone company using a telephone number of the unknown subscriber, the telephone number containing at least an area code and an exchange, the method comprising the steps of: a. providing at least one data base containing a plurality of dates, a plurality of telephone numbers and a plurality of telephone companies, each of the telephone numbers assigned to a certain one of the telephone companies on each of the dates; b. providing a first telephone number of an unknown subscriber, the first telephone number of the unknown subscriber, the telephone number containing at least an area code and an exchange and having a call date; c. selecting from the plurality of dates a date that matches the call date; d. selecting from the plurality of telephone numbers a telephone number that matches the first telephone number of the unknown subscriber on the selected date; e. extracting from the at least one data base information items associated with the telephone company assigned to the selected telephone number; and f. generating the subpoena document using the information items.