Term ends May 28, 2033 · Medium confidence
20-year base term ends Mar 15, 2033
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,517,967), so the cap could be lower.
Held by Edisonled LLC
Filed Mar 15, 2013 as application 13/834,246 · Granted Oct 20, 2015
Base term plus 286 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2013
2033
Clock starts
Mar 15, 2013
Mar 15, 2013
Term ends
May 28, 2033
May 28, 2033
Granted
Oct 20, 2015
Oct 20, 2015
base term
patent term adjustment
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
286
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 9,065,022, US 9,123,868, US 9,517,967.
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.
6
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 286 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 Mar 15, 2013, when this application, 13/834,246, was filed | Mar 15, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +286 days, USPTO patent term adjustment record | Dec 26, 2033 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,065,022, US 9,123,868, US 9,517,967) | capped to May 28, 2033 | Medium 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 28, 2033 | Medium confidence |
This family
| US 9,166,116 | this patent May 2033 | May 2033 |
| US 9,741,699 | In force no later than Mar 2033 | no later than Mar 2033 |
| US 10,247,395 | In force no later than Mar 2033 | no later than Mar 2033 |
| US 10,670,244 | In force no later than Mar 2033 | no later than Mar 2033 |
| US 11,255,524 | Lapsed on the fee record Feb 2026 | Feb 2026 |
| US 11,808,436 | In force Mar 2033 | Mar 2033 |
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 |
|---|---|---|---|
| Mar 15, 2013 Reel 30046, frame 595 | Pu, Chi-chih; Lee, Chen-hong; Yeh, Shih-yu; Cheng, Wei-kang; Pan, Shyi-ming; Hong, Siang-fu; Huang, Chih-shu; Wang, Tzu-hsiang; Tang, Shih-chieh; Yang, Cheng-kuang | Formosa Epitaxy Incorporation | Assignment of Assignor's Interest |
| Sep 26, 2016 Reel 40149, frame 765 | Formosa Epitaxy Incorporation | Epistar Corporation | Assignment of Assignor's Interest |
| Dec 12, 2024 Reel 69604, frame 414 | Epistar Corporation | Edisonled LLC | 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.
What's changing
May 2033
Term ends May 28, 2033. Maintenance fees still fall due before then
Note
The 286 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 9,065,022, US 9,123,868, US 9,517,967.
Citations
13
later US patents cite this one
That is above the median of utility patents granted in 2015 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.