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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
ESTECH SYSTEMS IP LLC	3701 E PLANO PARKWAY PLANO TX 75074

International Classification(s)

• H04M:TELEPHONIC COMMUNICATION

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hansen, II Harold E A	Plano, TX	10	152
Suder, Eric G	Plano, TX	17	398

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
October 17, 2006	US,7123699,B2   US7123699B2	GRANTED PATENT AS SECOND PUBLICATION
February 05, 2004	US,20040022373,A1   US20040022373A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7123699

Voice mail in a voice over IP telephone system

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