Invalidity dossier
US 7230919
Added 9/23/2026, 12:13:50 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 7,230,919 B2
Title: Quality-of-service monitor for voice-over-Internet-protocol calls
Patent number / application: US 7,230,919 B2; Application No. US 09/779,012
Inventors: Mark Flanagan, Kristin Butcher, David Richardson, Kenton Cross
Original assignee: Siemens Communications Inc. Current assignee listed as Unify Inc.
Priority / filing date: 2001-02-07. Publication date: 2007-06-12.
Legal status: Expired – Fee Related; adjusted expiration 2023-12-11.
Purpose and plain-language scope (from the supplied excerpt): The invention relates to voice-over-Internet-protocol (VoIP) telephony. VoIP calls are digitized, packetized, and carried over IP networks instead of the Switched Circuit Network (SCN), which includes ISDN and PSTN. IP instabilities can cause gaps in voice transmission, clicks, background noise, and distortions. The disclosed system checks route quality and routes VoIP calls only over routes meeting a quality criterion. It collects values representing a history of packet-loss statistics together with current packet-loss data over a given VoIP route. The results are processed with a smoothing algorithm and compared against user-configurable quality criteria to determine whether the route offers acceptable quality of service (QoS). If not, a QoS Monitor automatically blocks the unacceptable VoIP pathway so subsequent calls are routed via an alternative, such as the SCN, for a user-defined period. The figures describe a background-art telecommunications system with an H.323 terminal, gateways to ISDN, PSTN, enterprise, and wireless networks, and a flowchart of the method; FIG. 3 illustrates computation of smoothed packet loss.
What the excerpt does not establish: It contains no claims text, so the exact claimed scope is unverified. It also does not establish litigation, ownership transfers beyond the listed assignments, validity, or prior art, and the excerpt is explicitly partial.
Generated 10/1/2026, 9:53:46 PM
Cases on file (0)
Specific litigation cases in our database that name US patent 7230919. The free-form analysis below may also discuss cases beyond this list.
No cases on file mention this patent. Upload a CSV or add a case manually in Admin → Manage litigation cases.
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Proceedings on file (0)
All PTAB activity →AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.
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
Earlier patents, publications, and products that may anticipate or render the claims unpatentable.
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.