Also listed on Hanaro Telecom., Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Mar 10, 2027 · High confidence
20-year base term ended Jun 9, 2026
Held by Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute, KT Corporation, SK Telecom Co., Ltd. and Hanaro Telecom, Inc.
Filed Dec 10, 2007 as application 11/921,894 · Granted Apr 17, 2012
Base term plus 1162 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2006
2027
Clock starts
Jun 9, 2006
Jun 9, 2006
Term ends
Mar 10, 2027
Mar 10, 2027
Granted
Apr 17, 2012
Apr 17, 2012
base term
patent term adjustment
fee events
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
1,162
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 7,907,733.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
2
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 1162 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jun 9, 2006, when application PCT/KR2006/002214, the earliest non-provisional in its chain, was filed (this one was filed Dec 10, 2007) | Jun 9, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1162 days, USPTO patent term adjustment record | Aug 14, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,907,733) | capped to Mar 10, 2027 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 10, 2027 | High confidence |
This family
| US 8,160,254 | this patent Mar 2027 | Mar 2027 |
1 of 2 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Dec 10, 2007 Reel 20296, frame 855 | Cho, Seok-heon; Yoon, Chul-sik | Samsung Electronics Co., Ltd.; Electronics and Telecommunications Research Institute; KT Corporation; SK Telecom Co., Ltd.; Hanaro Telecom, Inc. | Assignment of Assignor's Interest |
| Dec 10, 2007 reel/frame not recorded | Cho, Seok-heon; Yoon, Chul-sik | Samsung Electronics Co., Ltd. | Assignment of Assignor's Interest |
| Dec 10, 2007 reel/frame not recorded | Cho, Seok-heon; Yoon, Chul-sik | Electronics and Telecommunications Research Institute | Assignment of Assignor's Interest |
| Dec 10, 2007 reel/frame not recorded | Cho, Seok-heon; Yoon, Chul-sik | KT Corporation | Assignment of Assignor's Interest |
| Dec 10, 2007 reel/frame not recorded | Cho, Seok-heon; Yoon, Chul-sik | SK Telecom Co., Ltd. | Assignment of Assignor's Interest |
| Dec 10, 2007 reel/frame not recorded | Cho, Seok-heon; Yoon, Chul-sik | Hanaro Telecom, Inc. | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Mar 2027
Term ends Mar 10, 2027. No further fees fall due before then
Note
The 1162 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 7,907,733.
Citations
34
later US patents cite this one
That is top 25% of utility patents granted in 2012 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.