Patent Assignment
Reel/Frame 052448/0044
Corrective Assignment to Correct the Execution Date Previously Recorded on Reel 020408 Frame 0975. Assignor(S) Hereby Confirms the Change of Name.
Recorded: 2020-04-20
Pages: 3
Assignor
SBC KNOWLEDGE VENTURES, L.P.
Executed: 2006-02-24
Assignee
AT&T KNOWLEDGE VENTURES, L.P.
645 E. PLUMB LANE, RENO, NEVADA, 89502
Covered Property
(1)
Dtmf Lockout Utility Using Epoch Time Stamp
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Feb 5, 2004
From: STROUD, KENNETH ROBERT; BRANDT, JEFFREY LEWIS; CHERYE, RICK ANTHONY
To: SBC KNOWLEDGE VENTURES, L.P.
Reel/Frame 014954/0371 →
Change of Name
Jan 24, 2008
From: SBC KNOWLEDGE VENTURES, L.P.
To: AT&T KNOWLEDGE VENTURES, L.P.
Reel/Frame 020408/0975 →
Change of Name
Apr 20, 2020
From: AT&T KNOWLEDGE VENTURES, L.P.
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 052448/0096 →