Invalidity dossier
US 6133853
Personal communication and positioning system
Current assignee: Silver State Intellectual Technologies Inc
Added 9/23/2026, 3:15:40 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 — US6133853A
Title: Personal communication and positioning system
Patent number: US6133853A
Application number: US09/126,936
Inventors: Michael L. Obradovich, John Pirtle, Corena Dusek
Original assignee: American Calcar Inc
Current assignee (as listed): Silver State Intellectual Technologies Inc
Prior art date / filing date: 1998-07-30
Publication (grant) date: 2000-10-17
Legal status (as listed): Expired – Lifetime; anticipated expiration 2018-07-30
Purpose. Per the supplied definitions, the invention "relates generally to a system for communicating data including global-positioning-encoded information," and "specifically to a device and system for communicating and retrieving position and position related data."
Plain-language scope. The excerpt describes GPS-capable devices that use a GPS receiver to determine position in latitude and longitude. Some such devices store map data in memory and display the device's position against that map data; others lack an underlying map database and show only geographic coordinates, called waypoints. Most GPS receivers can store many waypoints; some can plot and display a trail of waypoints and store the trail for later retrieval. More sophisticated devices may compute heading, speed, and other information by comparing previous GPS-determined positions. The excerpt also notes that GPS receiver devices with map display capability may store map information on computer diskettes, CD-ROMs, "or oth—" (text truncated).
Classification. G09B29/106; G01C21/20; G08G1/0962; H04L67/52; H04W4/02; H04W4/029.
Source: https://patents.google.com/patent/[US6133853](/patent/US6133853)/en
What the excerpt does not establish. It does not include the claims, so the actual patented scope cannot be determined here. It omits most of the specification, the detailed description, and the drawings, and it identifies no prior-art references. It does not establish priority, inventorship validity, enforceability, or current ownership as a legal matter; the listed assignees and legal status are expressly stated in the source to be assumptions, not legal conclusions. The excerpt also does not describe the "personal communication" or "condition reporting" features implied by the prior-art keywords.
Generated 10/1/2026, 9:51:42 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
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.