IP Library › Assignment 019149/0608
Patent Assignment
Reel/Frame 019149/0608

Assignment of Assignor's Interest

Recorded: 2007-04-12 Pages: 2
Assignor
ORMAZABAL, GASTON
Executed: 2007-04-01
Assignee
VERIZON SERVICES CORP.
1310 NORTH COURTH HOUSE ROAD, ARLINGTON, VIRGINIA, 22201
Covered Property (1)
Prevention of Denial of Service (Dos) Attacks on Session Initiation Protocol (Sip)-Based Systems Using Return Routability Check Filtering
Patent: 8,966,619 →
Application: 11/557,740 →
Publication: US 2008/0222724
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Nov 2, 2009
From: VERIZON SERVICES CORP.
To: VERIZON PATENT AND LICENSING INC.
Reel/Frame 023455/0611 →
Assignment of Assignor's Interest Aug 21, 2018
From: SCHULZRINNE, HENNING G.
To: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
Reel/Frame 046638/0726 →