IP Library › Assignment 052426/0459
Patent Assignment
Reel/Frame 052426/0459

Assignment of Assignor's Interest

Recorded: 2020-04-17 Pages: 3
Assignors
MUELLER, STEPHEN MARK
Executed: 2003-12-05
RUSSELL, ALICIA MARIE
Executed: 2003-12-04
Assignee
SBC KNOWLEDGE VENTURES, L.P.
645 E. PLUMB LANE, RENO, NEVADA, 89502
Covered Property (1)
Presence Enhanced Telephony Service Architecture
Patent: 8,509,406 →
Application: 12/638,343 →
Publication: US 2010/0166162
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Apr 17, 2020
From: SBC KNOWLEDGE VENTURES, L.P.
To: AT&T KNOWLEDGE VENTURES, L.P.
Reel/Frame 052434/0460 →
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 →