Term ends Nov 23, 2031 · High confidence
20-year base term ends Sep 29, 2031
Held by Seoul Semiconductor Co., Ltd.
Filed Sep 29, 2011 as application 13/249,196 · Granted Mar 4, 2014
Base term plus 55 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Sep 29, 2011
Sep 29, 2011
Term ends
Nov 23, 2031
Nov 23, 2031
Granted
Mar 4, 2014
Mar 4, 2014
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
55
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
4
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 55 days past its 20-year base term on prosecution delay. 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 Sep 29, 2011, when this application, 13/249,196, was filed | Sep 29, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +55 days, USPTO patent term adjustment record | Nov 23, 2031 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | 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 | Nov 23, 2031 | High confidence |
This family
| US 8,664,679 | this patent Nov 2031 | Nov 2031 |
| Application PCT/US2012/057669 | PCT application no patent term | no patent term |
| US 8,822,243 | Lapsed on the fee record Sep 2018 | Sep 2018 |
| Application 14/341,495 | Abandoned not computed | not computed |
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 20, 2011 Reel 27422, frame 707 | Lin, Chao-kun; Yan, Li; Chuang, Chih-wei | Bridgelux, Inc. | Assignment of Assignor's Interest |
| Nov 12, 2012 Reel 29281, frame 844 | Bridgelux, Inc. | White Oak Global Advisors, LLC, as Collateral Agent | Security Agreement |
| May 22, 2013 Reel 30466, frame 93 | White Oak Global Advisors, LLC, as Collateral Agent | Bridgelux, Inc. | Release of Security Interest |
| Jul 1, 2013 Reel 30724, frame 395 | Bridgelux, Inc. | Toshiba Techno Center Inc. | Assignment of Assignor's Interest |
| Sep 22, 2014 Reel 33787, frame 733 | Toshiba Techno Center Inc. | Manutius IP, Inc. | Assignment of Assignor's Interest |
| Apr 20, 2016 Reel 38334, frame 444 | Manutius IP, Inc. | Toshiba Corporation | Assignment of Assignor's Interest |
| Jan 24, 2020 Reel 51604, frame 824 | Toshiba Corporation | Toshiba Electronic Devices and Storage Corporation | Assignment of Assignor's Interest |
| Apr 6, 2020 Reel 52316, frame 44 | Toshiba Electronic Devices & Storage Corporation | Seoul Semiconductor Co., Ltd. | 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
Nov 2031
Term ends Nov 23, 2031. No further fees fall due before then
Note
The 55 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
19
later US patents cite this one
That is top 25% of utility patents granted in 2014 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.