US 8,391,298 K1 (3,875th)
	Phone directory in a voice over IP telephone system
Eric G. Suder; and Harold E. A. Hansen, II
Assigned to ESTECH SYSTEMS IP, LLC
Trial No. IPR2021-00574, Mar. 5, 2021
Inter Partes Review Certificate for Patent 8,391,298, issued Mar. 5, 2013, Appl. No. 10/447,607, May 29, 2003
Inter Partes Review Certificate issued Feb. 12, 2025