C12) United States Patent (10) Patent No.: US 7,272,639 Bl Levergood Et Al
111111 1111111111111111111111111111111111111111111111111111111111111 US007272639Bl c12) United States Patent (10) Patent No.: US 7,272,639 Bl Levergood et al. (45) Date of Patent: *Sep.18,2007 (54) INTERNET SERVER ACCESS CONTROL 4,578,530 A 3/1986 Zeidler .................... 178/22.09 AND MONITORING SYSTEMS 4,734,858 A 3/1988 Schlafly 4,755,940 A 7/1988 Bracht! et a!. (75) Inventors: Thomas Mark Levergood, Hopkinton, 4,759,063 A 7/1988 Chaum MA (US); Lawrence C. Stewart, 4,759,064 A 7/1988 Chaum 4,775,935 A 10/1988 Yourick Burlington, MA (US); Stephen Jeffrey 4,795,890 A 111989 Goldman Morris, Westford, MA (US); Andrew 4,799,156 A 111989 Shavit eta!. C. Payne, Lincoln, MA (US); George 4,812,628 A 3/1989 Boston eta!. Winfield Treese, Newton, MA (US) 4,827,508 A 5/1989 Shear 4,891,503 A 111990 Jewell (73) Assignee: Soverain Software LLC, Chicago, IL (US) (Continued) FOREIGN PATENT DOCUMENTS ( *) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 EP 0172670 2/1986 U.S.C. 154(b) by 0 days. (Continued) This patent is subject to a terminal dis OTHER PUBLICATIONS claimer. T. Berners-Lee et al., RFC 1738: Uniform Resource Locators (21) Appl. No.: 09/005,479 (URLs), Network Working Group, Dec. 1994, pp. 1-25.* (Continued) (22) Filed: Jan. 12, 1998 Primary Examiner-Patrice Winder Related U.S. Application Data (74) Attorney, Agent, or Firm-Jones Day (63) Continuation of application No. 08/474,096, filed on (57) ABSTRACT Jun. 7, 1995, now Pat.
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