Invalidity dossier
US 10027390
Precoding method, precoding device
Current assignee: Sun Patent Trust Inc
Added 9/23/2026, 1:04:26 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: US 10027390 B2
Title: Precoding method, precoding device
Patent number: US 10027390 B2
Application number: US 15/692,030
Inventor(s): Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
Assignee: Sun Patent Trust Inc (listed as both current and original assignee)
Key dates (as listed; the source notes these are assumptions, not legal conclusions):
- Priority date: 2011-02-21
- Filing date: 2017-08-31
- Publication date: 2018-07-17
- Anticipated expiration: 2032-02-17
- Legal status: Active (an assumption, not a legal conclusion)
Other versions: US 20170366240 A1. Later applications claim priority to this family (e.g., US 16/004,674; US 16/432,085; US 16/835,947; US 17/144,255; US 17/522,036; US 18/080,064).
Purpose and plain-language scope (limited to what the supplied text shows):
The patent concerns a "precoding method" and "precoding device." The excerpt lists prior-art keywords—symbol, math, signal, precoding, transmission—indicating the subject matter relates to processing transmitted symbols/signals using mathematical precoding in a communication system. The record shows a granted US patent with a 2011 priority date, later continuations, and active status.
Source: https://patents.google.com/patent/US10027390/en
What the excerpt does not establish:
- The actual claims, claim language, or the specific technical steps of the precoding method/device (the claim text is not included in the excerpt).
- The detailed description, figures, or mathematical formulas (images and omitted text are not reproduced).
- Any prior-art references, comparisons, or the specific problem being solved.
- Whether the listed legal status, assignee, or dates are legally accurate (the source itself disclaims this).
- Litigation, ownership transfers, validity, or prior-art analysis (not addressed here).
Note: Statements above are limited to the supplied excerpt; missing technical detail is not inferred.
Generated 10/1/2026, 9:53:18 PM
Cases on file (0)
Specific litigation cases in our database that name US patent 10027390. The free-form analysis below may also discuss cases beyond this list.
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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.