Invalidity dossier
US 6377810
Method of operation of mobile wireless communication system with location information
Current assignee: Google Technology Holdings LLC
Added 9/23/2026, 10:22:50 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 6,377,810 B1
Title: Method of operation of mobile wireless communication system with location information
Patent number / application: US 6,377,810 B1; Application US09/330,739, filed 1999-06-11. Priority date listed as 1999-06-11. Granted/publication date 2002-04-23. Legal status listed as "Expired – Lifetime," with anticipated expiration 2019-06-11.
Inventors: Robert L. Geiger and Miles R. Jackson.
Assignee: Original assignee Motorola, Inc.; current assignee listed as Google Technology Holdings LLC (the source also lists intermediate reassignments to Motorola Mobility, Inc., Motorola Mobility LLC, and Google Technology Holdings LLC). Per instructions, no analysis of ownership transfers is offered.
Purpose and plain-language scope: The patent concerns operating a mobile wireless communication system in which location information for wireless devices is maintained. Location information can be delivered over the wireless link to the fixed network and stored on a location server. It is described as useful for emergency services (locating a caller and dispatching help) and as commercially valuable, while also being "highly private and sensitive" — a user may not want it released without permission. The disclosure describes a system with base stations, a controller, a location server, a messaging gateway, an optional directory server, and a requesting entity. Location may be determined by monitoring the serving base station, by triangulation using multiple base stations, or by a GPS receiver at the mobile device. The mobile device may have a unique encryption key for generating digital signatures; the text describes hashing, public-key signing/verification, certification of public keys, and "attribute certificates" binding an attribute to an entity, optionally with time or geographic validity constraints. Prior-art keywords listed include location, mobile device, location information, requesting entity, and authorization.
What the excerpt does not establish: The supplied text does not include the actual claims, so precise claim scope cannot be stated. Full specification details, drawings (FIGS. 1–4), the complete message flow of FIG. 3, dependent-claim limitations, and any prior-art references are not established here. The excerpt also does not establish inventorship disputes, validity, enforceability, or litigation history.
Generated 10/1/2026, 9:33:30 PM
Cases on file (0)
Specific litigation cases in our database that name US patent 6377810. 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.