Invalidity dossier
US 8559426
System and method for distribution of data packets utilizing an intelligent distribution network
Current assignee: Amhc Inc
Added 9/17/2026, 1:09:18 AM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview: US8559426B2
Title: System and method for distribution of data packets utilizing an intelligent distribution network
Patent number: US8559426B2 | Application: US09/936,624 | Publication (as application): US20030099202A1
Dates (per supplied source): Filing date 2001-01-11; granted/publication date 2013-10-15; adjusted expiration 2025-11-04; status "Expired - Lifetime." The source also lists a "prior art date" of 1920-01-11, labeled an assumption, not a legal conclusion.
Assignee information (as listed in the source): Current assignee shown as AMHC Inc and CONFERSERV Inc; original assignee "Individual." Assignment entries listed: CONFERSERV, INC. (2008-06-26), ADVANCED MEDIA DESIGN, INC. (2008-07-02), AMHC, Inc. (2021-07-13), MEDIAPOINTE, INC (2021-08-02), and AMHC, Inc. (2021-09-01, assignment and license-back).
Inventor(s): Ben A. Lear; Joseph F. Hayes.
Classifications: H04L45/12 and H04L45/122 (shortest-path evaluation, e.g., minimizing hop count); H04L65/1066, H04L65/1096, H04L65/1101, H04L65/61, H04L65/612, H04L65/75, H04L65/752 (real-time packet communication, session management, streaming, and media packet handling adapted to network capabilities).
Purpose and plain-language scope (from the excerpt): The disclosure relates generally to network data transmission and more particularly to efficient distribution of data using an "intelligent distribution network." The excerpt explains TCP/IP background: large data blocks are broken into packets with ordering information so a client can reorder them despite asynchronous delivery; TCP may detect lost or delayed packets and request retransmission, and packet loss/delay reduces throughput and increases latency. Packets traverse asynchronous devices such as routers, switches, hubs, and bridges, with roughly 40 ms latency per device noted. Client bandwidth examples range from ~14.4 kbps to 64 kbps over PSTN; ISP-side LANs aggregate client data at gigabit rates, while WAN throughput is lower and costlier. No claims are included in the supplied excerpt.
Source: https://patents.google.com/patent/[US8559426](/patent/US8559426)/en
What the excerpt does not establish: The specific claims, detailed embodiments, or the precise architecture of the "intelligent distribution network" are not provided (the text is marked as excerpted). Nor does it establish priority/conception facts, legal status, or the matters excluded above.
Generated 10/1/2026, 10:03:17 PM
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Litigation summary
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PTAB challenges
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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.