Invalidity dossier
US 9414274
Method and apparatus for performing handover in a wireless communication system
Current assignee: Apple Inc
Added 9/23/2026, 4:32:06 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 9,414,274 B2
Title: Method and apparatus for performing handover in a wireless communication system
Assignee/Inventor: Current and original assignee listed as Apple Inc.; inventor Mukesh Taneja.
Key dates (per the source, which notes some are assumptions): Prior art date 2008-03-13; application US 14/962,186 filed 2015-12-08; published as US 20160095027A1 on 2016-03-31; granted 2016-08-09; anticipated expiration 2029-03-10; legal status listed as Active.
Purpose: The invention relates to wireless communication systems, specifically performing a handover between a Long Term Evolution (LTE) network and a second-generation (2G)/third-generation (3G) radio access network. Because LTE is expected to be deployed initially in densely populated areas, terminals may need to hand over between LTE and 2G/3G networks so users can move seamlessly without interruption. Existing multi-mode terminals use multiple protocol stacks, increasing architectural complexity, and IP packets from applications may be lost or not retransmitted during handover—especially problematic for delay-sensitive applications.
Plain-language scope: The described wireless User Equipment (UE) includes an LTE-Mobile Extreme Convergence (LTE-MXC) application processor, an LTE processor, and a Digital Signal Processor supporting MXC modem (UMTS/GSM) functionality. The wireless UE communicates with a system of Radio Access Networks (RANs), one being an LTE network. When a Radio Access Technology (RAT) indicator falls below a pre-defined threshold, the UE buffers a set of IP packets and sends them to the LTE processor and DSP; the LTE processor transmits the buffered packets to the LTE network over a wireless connection. The description also covers multi-mode Radio Resource Control (MMd_RRC) and multi-mode Non-Access Stratum (MMd_NAS) module operating states, plus methods for performing the handover.
Source: https://patents.google.com/patent/US9414274/en
What the excerpt does not establish: It does not provide the full claims, complete description, or prior-art references; the source text is stated to be excerpted. It does not establish validity, enforceability, litigation history, or ownership transfers, and legal-status/dates beyond those listed remain assumptions per the source.
Generated 10/1/2026, 9:44:22 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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