Invalidity dossier
US 7656870
System and method for peer-to-peer hybrid communications
Current assignee: Damaka Inc
Added 9/23/2026, 5:02:26 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 — US7656870B2
Title: System and method for peer-to-peer hybrid communications
Patent number: US7656870B2
Application number: US11/081,068
Inventors: Sivakumar Ravikumar; Satish Gundabathula; Rameshkumar Ravikumar
Original/current assignee (as listed): Damaka, Inc.
Priority date: 2004-06-29
Filing date: 2005-03-15
Publication date (grant): 2010-02-02
Legal status (as listed): Expired – Fee Related; adjusted expiration 2026-11-09
Source: https://patents.google.com/patent/[US7656870](/patent/US7656870)/en
Purpose (from the supplied text): The patent addresses a tension in packet-based communication networks: traditional peer-to-peer networks allow endpoints to communicate directly without an intermediary, but distribute credential and address information across insecure endpoints, raising security risk. Client/server models localize credentials on a server for security, but the server can become a bottleneck because all traffic—even between two clients—must pass through it. The disclosed subject matter is a "hybrid peer-to-peer" system and method positioned between these two models. The excerpt introduces an "access server" and "endpoints" as recurring elements (per the prior-art keywords and definitions) and includes FIG. 1, described as a simplified network diagram of one embodiment of a hybrid peer-to-peer system, and FIG. 2a.
Plain-language scope: Based only on the supplied material, the patent concerns facilitating communications among endpoints in a hybrid peer-to-peer arrangement involving an access server, rather than pure peer-to-peer or pure client/server. Classifications include H04L67/104 (peer-to-peer networks), H04L45/54 (routing table organization), H04L67/141 (application session setup), and H04L63/0227 (firewall filtering policies).
What the excerpt does not establish: The supplied text contains no claims, no complete written description, no full figure descriptions, no named prior-art references, and no recited method steps. It therefore does not establish the specific claimed scope, claim limitations, embodiments, or technical details of the invention. The legal-status and date entries are expressly assumptions per the source and are not legal conclusions.
Generated 10/1/2026, 9:43:54 PM
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Litigation summary
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Proceedings on file (0)
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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.