Invalidity dossier
US 7602775
Internet security device and method
Current assignee: Juniper Networks Inc
Added 9/23/2026, 11:47:48 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 Patent 7,602,775 B1
Title: Internet security device and method
Assignee: Juniper Networks Inc. (original assignee; reassignments to Netscreen Technologies, Inc./Juniper Networks, Inc. appear in the record)
Key dates: Priority date 2001-03-30; filing date 2006-06-30; publication/grant date 2009-10-13. Legal status listed as "Expired – Lifetime" (adjusted expiration 2023-03-18).
Inventors: Yan Ke, Yuming Mao, Jian Tong, Guangsong Huang.
Purpose: The invention relates to an Internet security system. It provides a high-performance parallel processing system for securing enterprise intranets, e-business operations, and high-speed Internet access, incorporating a stateful-inspection firewall and VPN features on a resilient, scalable platform targeting large enterprises and service providers. It addresses throughput bottlenecks caused when security appliances act as network bottlenecks.
Plain-language scope: A data packet arrives at an input port. A switching board classifies it, determines whether it should be accepted, and routes it: first packets of a session go to a management board; non-first packets go to a processing board. The management board examines packets (firewall check, dynamic port database check, access policy check) and forwards them to a processing board, which processes them (e.g., policy enforcement, VPN encryption/decryption, key negotiation, firewall protection, network address translation, tunnel encapsulation). Multiple processing boards process packets in parallel. The number of switching, management, and processing boards is user-configurable. Implementations include a firewall device and a secure gateway with firewall and VPN functionality.
Source: https://patents.google.com/patent/[US7602775](/patent/US7602775)/en
What the excerpt does not establish: Because the supplied text is an excerpt, it does not show the full specification, all claims, the complete drawing descriptions, or the exact wording of claim limitations. It does not establish the legal effectiveness of the listed reassignments, the accuracy of the assignee listing, litigation history, validity, or prior-art relationships — and none of these were researched here, per instructions. It also does not confirm details of the omitted portions of the description.
Generated 10/1/2026, 9:32:17 PM
Cases on file (0)
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Litigation summary
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Proceedings on file (0)
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No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.
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
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
Extensions
Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.
Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.