1 patent currently held
50 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Dec 2026. from the record
Of the 50 now held by other companies, 39 name KT Corporation as their current owner, and 11 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
1
Ending by 2030
Dec 2026
Next term end
1
Patent families
When these terms end
Held patents by the year their term ends
notable patents
all others
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Only 1 of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends no later than Jan 2029 · Medium confidence
The most cited patent in this portfolio, cited by 70 later US patents, top 10% of utility patents granted in 2012 in our data. Protection runs to 2029. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
Also notable
Ends Dec 2026 · High confidence
Cited by 43 later US patents, top 25% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2026.
now held by KT Corporation
Also notable
Ends Jan 2028 · High confidence
Renewed at every maintenance window since the 2012 grant; no more fees are due before its term ends in 2028.
now held by KT Corporation
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 2 terms have ended since Aug 17, 2026
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
Patents held now
Soonest term end first.
Showing 1 to 1 of 1
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,027,368 | Terminal in Wireless Communication System and Ranging Method for Dynamically Changing Ranging Period Thereof held by KT Corporation In force · High confidence | In force | High confidence |
Also on record, not counted in the 1: 50 patents in force now held by others · 84 patents ended · 46 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
7 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed