Term ends May 29, 2029 · High confidence
20-year base term ends Feb 6, 2029
Held by Nichia Corporation
Filed Jun 10, 2013 as application 13/913,602 · Granted Jan 10, 2017
Base term plus 112 days of patent term adjustment (USPTO delay)
Today
2009
2029
Clock starts
Feb 6, 2009
Feb 6, 2009
Term ends
May 29, 2029
May 29, 2029
Granted
Jan 10, 2017
Jan 10, 2017
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
112
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
9
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 112 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Feb 6, 2009, when application PCT/JP2009/052099, the earliest non-provisional in its chain, was filed (this one was filed Jun 10, 2013) | Feb 6, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +112 days, USPTO patent term adjustment record | May 29, 2029 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 29, 2029 | High confidence |
This family
| US 8,491,816 | In force Aug 2029 | Aug 2029 |
| US 9,541,238 | this patent May 2029 | May 2029 |
| US 10,011,769 | In force Feb 2029 | Feb 2029 |
| US 10,858,582 | In force Jan 2030 | Jan 2030 |
| US 11,613,698 | In force Oct 2029 | Oct 2029 |
| US 11,873,435 | In force Feb 2029 | Feb 2029 |
| US 12,084,609 | In force Feb 2029 | Feb 2029 |
| Application 18/783,735 | Pending not computed | not computed |
8 of 9 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 |
|---|---|---|---|
| Sep 4, 2017 Reel 43750, frame 207 | Mitsubishi Chemical Corporation | Mitsubishi Rayon Co., Ltd. | Merger |
| Sep 5, 2017 Reel 43750, frame 834 | Mitsubishi Rayon Co., Ltd. | Mitsubishi Chemical Corporation | Change of Name |
| Jul 8, 2020 Reel 53144, frame 422 | Mitsubishi Chemical Corporation | Citizen Electronics Co., Ltd. | Assignment of Assignor's Interest |
| Mar 1, 2021 reel/frame not recorded | Citizen Electronics Co., Ltd. | Citizen Electronics Co., Ltd. | Assignment of Assignor's Interest |
| Mar 1, 2021 reel/frame not recorded | Citizen Electronics Co., Ltd. | Nichia Corporation | Assignment of Assignor's Interest |
| Mar 1, 2021 Reel 55439, frame 376 | Citizen Electronics Co., Ltd. | Citizen Electronics Co., Ltd.; Nichia Corporation | Assignment of Assignor's Interest |
| Jan 14, 2025 Reel 69847, frame 593 | Citizen Electronics Co., Ltd. | Nichia Corporation | Nunc Pro Tunc Assignment |
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
May 2029
Term ends May 29, 2029. Maintenance fees still fall due before then
Note
The 112 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
33
later US patents cite this one
That is top 10% of utility patents granted in 2017 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.