Lapsed Dec 21, 2018 on the fee record · Medium confidence
20-year base term ended Aug 4, 2026
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
Second maintenance fee unpaid; grace period ended.
Held by Emcore Corporation
Filed Mar 1, 2007 as application 11/712,725 · Granted Dec 21, 2010
Base term, 20 years from filing, plus 760 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 21, 2018
2006
2028
Clock starts
Aug 4, 2006
Aug 4, 2006
No longer in force
Dec 21, 2018
Dec 21, 2018
Granted
Dec 21, 2010
Dec 21, 2010
Term would have run to
Sep 2, 2028
Sep 2, 2028
base term
patent term adjustment
after the term ends
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
760
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 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.
5
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Sep 2, 2028: its 20-year base term plus 760 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Aug 4, 2006, when application 11/499,120, the earliest non-provisional in its chain, was filed (this one was filed Mar 1, 2007) | Aug 4, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +760 days, USPTO patent term adjustment record | Sep 2, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Dec 21, 2018 | High confidence |
| Computed term end | The steps above, in order | Dec 21, 2018 | Medium confidence |
This family
| Application 11/499,120 | Abandoned not computed | not computed |
| US 7,853,150 | In force Jul 2029 | Jul 2029 |
| US 7,856,185 | this patent Dec 2018 | Dec 2018 |
| US 7,534,054 | Term ended Aug 2026 | Aug 2026 |
| US 8,186,891 | In force Sep 2027 | Sep 2027 |
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 1, 2007 Reel 19038, frame 510 | Hudgins, Clay E.; McGlynn, Daniel | Emcore Corporation | Assignment of Assignor's Interest |
| Nov 12, 2008 Reel 21824, frame 19 | Emcore Corporation | Bank Of America, N.a. | Security Agreement |
| May 18, 2011 Reel 26304, frame 142 | Emcore Corporation; Emcore Solar Power, Inc. | Wells Fargo Bank, National Association | Security Agreement |
| Oct 12, 2011 reel/frame not recorded | Bank Of America, N.a. | Emcore Corporation | Release of Security Interest |
| Oct 12, 2011 reel/frame not recorded | Bank Of America, N.a. | Emcore Solar Power, Inc. | Release of Security Interest |
| Oct 12, 2011 Reel 27050, frame 880 | Bank Of America, N.a. | Emcore Corporation; Emcore Solar Power, Inc. | Release of Security Interest |
| Aug 23, 2022 Reel 61212, frame 728 | Wells Fargo Bank | Emcore Corporation; Emcore Solar Power, Inc. | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Wells Fargo Bank | Emcore Corporation | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Wells Fargo Bank | Emcore Solar Power, Inc. | Release of Security 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
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 760 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Dec 21, 2018. We will not guess the cap.
Citations
41
later US patents cite this one
That is top 25% of utility patents granted in 2010 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.