Term ended Aug 4, 2026 · High confidence
20-year base term ended Aug 4, 2026
Filed Nov 26, 2007 as application 11/944,969 · Granted May 19, 2009
Base term, 20 years from filing
Today
Term ended Aug 4, 2026
2006
2026
Clock starts
Aug 4, 2006
Aug 4, 2006
Term ended
Aug 4, 2026
Aug 4, 2026
Granted
May 19, 2009
May 19, 2009
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
5
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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Aug 4, 2006, when application 11/499,120, the earliest non-provisional in its chain, was filed (this one was filed Nov 26, 2007) | Aug 4, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Aug 4, 2026 | High 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 | Lapsed on the fee record Dec 2018 | Dec 2018 |
| US 7,534,054 | this patent 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 |
|---|---|---|---|
| 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 |
| May 11, 2012 reel/frame not recorded | Wells Fargo Bank, National Association | Emcore Corporation | Partial Release of Security Interest |
| May 11, 2012 reel/frame not recorded | Wells Fargo Bank, National Association | Emcore Solar Power, Inc. | Partial Release of Security Interest |
| May 11, 2012 Reel 28192, frame 189 | Wells Fargo Bank, National Association | Emcore Corporation; Emcore Solar Power, Inc. | Partial Release of Security Interest |
| Jan 25, 2013 Reel 29693, frame 192 | Hudgins, Clay E. | Emcore Corporation | Assignment of Assignor's Interest |
| Mar 15, 2013 Reel 30006, frame 126 | Emcore Corporation | Sumitomo Electric Device Innovations, U.S.A., 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.
Citations
10
later US patents cite this one
That is below the median of utility patents granted in 2009 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.