Patent Assignment
Reel/Frame 052431/0750
Corrective Assignment to Correct the Execution Date Previously Recorded at Reel: 020426 Frame: 0075. Assignor(S) Hereby Confirms the Assignment.
Recorded: 2020-04-17
Pages: 4
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)
Presence Enhanced Telephony Service Architecture
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Apr 8, 2004
From: MUELLER, STEPHEN MARK; RUSSELL, ALICIA MARIE
To: SBC KNOWLEDGE VENTURES, L.P.
Reel/Frame 015193/0245 →
Change of Name
Jan 8, 2008
From: SBC KNOWLEDGE VENTURES, L.P.
To: AT&T KNOWLEDGE VENTURES, L.P.
Reel/Frame 020426/0075 →
Change of Name
Apr 17, 2020
From: AT&T KNOWLEDGE VENTURES, L.P.
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 052434/0462 →