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EP2387862
SEPSYSTEM AND METHOD FOR DETERMINING ESTABLISHMENT CAUSES
Filed
Jan 15, 2010
Technology
Electrical engineering · Digital communication
UPC cases
4
Ownership history
As recorded at the EPO. Transfers made after the opposition period are recorded in national registers and may be missing here.
Hover an owner to see their dates
- BlackBerry Limitedsince Aug 2, 2013; EPO record ends Jan 17, 2020
- Research In Motion LimitedOct 21, 2011 – Aug 2, 2013
Abstract
A user agent (UA), core network (CN) device, and method for a circuit switched (CS) fallback service in an evolved packet system (EPS). In one embodiment, the UA or CN includes a protocol layer having a non-access stratum (NAS). A processor of the UA or CN is configured to promote the NAS to process an EXTENDED SERVICE REQUEST having a service type with a decode value. The decode value identifies an EPS-defined radio resource control (RRC) establishment cause (EC).
From the international application WO2010081233
Litigation history
| Date | Case | Division | Type | Outcome | Parties |
|---|---|---|---|---|---|
| Aug 24, 2026 | UPC CFI 1537/2026 | Mannheim LD | Counterclaim for revocation | Locked | Xiaomi Corporation +9 |
Additional proceedings on this patent
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