Invalidity dossier
US 9788305
Method and apparatus for processing bandwidth intensive data streams using virtual media access control and physical layers
Current assignee: Xifi Networks R & D Inc
Added 9/23/2026, 5:15:27 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 9,788,305 B2
Title: Method and apparatus for processing bandwidth intensive data streams using virtual media access control and physical layers
Assignee / Inventor: Current assignee listed as Xifi Networks R and D Inc; inventor Sai C. Manapragada. Originally assigned to an individual; a 2023-08-02 reassignment to XIFI NETWORKS R&D INC. is recorded (noted as source data, without analysis).
Dates: Priority date 2013-10-30; application US 14/526,792 filed 2014-10-29; published as US20150117367A1 on 2015-04-30; granted 2017-10-10; status Active, adjusted expiration 2035-03-19.
Purpose (plain language): The patent addresses wireless networks handling high-bandwidth multimedia. It describes inserting a "processing layer" between an application layer and the actual MAC and PHY layers. This processing layer defines virtual MAC and virtual PHY layers that pool multiple real wireless transceiver resources (radios/receivers) and allocate their combined bandwidth to satisfy the peak bandwidth demands of several concurrently running applications—rather than binding each application to a single radio. Example: per-transceiver bandwidth is 300 Mbps, so Application A's 450 Mbps demand is met by one full transceiver plus half of a second, and Application D's demand by two transceivers plus half of a third.
Stated scope (from the excerpt's own summary): A wireless networking system with an application layer, first and second transceiver resources each having an actual bandwidth, and a processing layer that evaluates requirements and availabilities, including a bandwidth allocator allocating portions of each actual bandwidth to virtual MAC and PHY layers. Also described: a method of operating such a transceiver system, and a wireless transceiver for a duplex link with a programmable data transfer cycle exhibiting an asymmetric transmit/receive profile. Classifications include H04W72/02 and H04W72/0453.
What the excerpt does not establish: It is explicitly an excerpt with text omitted mid-sentence regarding unavailable-resource handling; it does not provide the full claims, complete figures, the entire specification, a complete assignee/ownership chain, or any legal conclusion on validity or enforceability.
Generated 10/1/2026, 9:43:43 PM
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Litigation summary
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Proceedings on file (0)
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PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Prior art
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Obviousness
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Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.