United States Patent and Trademark Office, Patent Assignment 12721/940:
Security Interest

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Assignor
Assignee

Securelogix Corporation
Paperwork Executed February 22, 2000

Transfer

Recorded
March 22, 2002

Silicon Valley Bank

Silicon Valley Bank

Silicon Valley Bank
Mail Sort Hg150, 3001 Tasman Drive
Santa Clara, CA 95054

Patents
Correspondent

Telephony Security System

USX0Patent Application No. 10035639, Filed October 19, 2001

USA1Application Publication No. 20020090073, Issued July 11, 2002

Telephony Security System

USB2Utility Patent No. 6760421, Issued July 6, 2004

System And Method For Bringing An In-line Device On-line And Assuming Control Of Calls

USX0Patent Application No. 09672530, Filed September 28, 2000

USB1Utility Patent No. 6687353, Issued February 3, 2004

System And Method To Discriminate Call Content Type

USX0Patent Application No. 09572516, Filed May 17, 2000

USB1Utility Patent No. 6718024, Issued April 6, 2004

Virtual Private Switched Telephone Network

USX0Patent Application No. 09709592, Filed November 10, 2000

USB1Utility Patent No. 6735291, Issued May 11, 2004

Telephony Security System

USX0Patent Application No. 09907089, Filed July 17, 2001

USA1Application Publication No. 20020021791, Issued February 21, 2002

Telephony Security System

USB2Utility Patent No. 6760420, Issued July 6, 2004

Telephony Security System

USX0Patent Application No. 09210347, Filed December 11, 1998

USB1Utility Patent No. 6249575, Issued June 19, 2001

Telephony security system

USX0Patent Application No. 09593888, Filed June 14, 2000

USB1Utility Patent No. 6320948, Issued November 20, 2001

Tightly Integrated Cooperative Telecommunications Firewall And Scanner With Distributed Capabilities

USX0Patent Application No. 09457494, Filed December 8, 1999

USB1Utility Patent No. 6226372, Issued May 1, 2001

SILICON VALLEY BANK,

Updated December 29, 2005

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