Lapsed Dec 28, 2018 on the fee record · High confidence
20-year base term ended May 26, 2024
Second maintenance fee unpaid; grace period ended.
Held by FTC Solar, Inc.
Filed Jan 13, 2006 as application 11/332,000 · Granted Dec 28, 2010
Base term, 20 years from filing, plus 1212 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 28, 2018
2004
2027
Clock starts
May 26, 2004
May 26, 2004
No longer in force
Dec 28, 2018
Dec 28, 2018
Granted
Dec 28, 2010
Dec 28, 2010
Term would have run to
Sep 20, 2027
Sep 20, 2027
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
1,212
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
28
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 20, 2027: its 20-year base term plus 1212 days of term adjustment for prosecution delay. 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 May 26, 2004, when application 10/855,254, the earliest non-provisional in its chain, was filed (this one was filed Jan 13, 2006) | May 26, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1212 days, USPTO patent term adjustment record | Sep 20, 2027 | 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 | 1 of 3 maintenance fees paid | lapsed Dec 28, 2018 | High confidence |
| Computed term end | The steps above, in order | Dec 28, 2018 | High confidence |
This family
| US 8,344,239 | Term ended Oct 2026 | Oct 2026 |
| US 7,856,769 | this patent Dec 2018 | Dec 2018 |
| US 7,900,407 | Lapsed on the fee record Mar 2019 | Mar 2019 |
| Application 11/836,140 | Abandoned not computed | not computed |
| Application 12/367,977 | Abandoned not computed | not computed |
| US 8,272,176 | Lapsed on the fee record Sep 2024 | Sep 2024 |
| US 8,256,170 | Term ended May 2024 | May 2024 |
| US 8,656,659 | Lapsed on the fee record Feb 2018 | Feb 2018 |
8 of 28 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 |
|---|---|---|---|
| Jan 13, 2006 Reel 17472, frame 777 | Plaisted, Joshua Reed; West, Brian | Kineo Design Group, LLC | Assignment of Assignor's Interest |
| Mar 21, 2008 Reel 20685, frame 963 | Kineo Design Group, LLC | PVT Solar, LLC | Assignment of Assignor's Interest |
| Apr 11, 2008 Reel 20792, frame 776 | PVT Solar, LLC | PVT Solar, Inc. | Statement of Conversion |
| Apr 28, 2008 Reel 20878, frame 306 | PVT Solar, Inc. | Energy, United States Department Of | Confirmatory License |
| Mar 18, 2013 Reel 30036, frame 707 | PVT Solar, Inc. | Triplepoint Capital LLC | Security Agreement |
| Oct 27, 2014 Reel 34040, frame 730 | PVT Solar, Inc. | SunEdison, Inc. | Assignment of Assignor's Interest |
| Aug 11, 2015 Reel 36329, frame 470 | SunEdison, Inc.; Sun Edison LLC; Solaicx; NVT, LLC | Goldman Sachs Bank USA, as Administrative Agent | Security Interest |
| Jan 12, 2016 Reel 37485, frame 343 | SunEdison, Inc.; Sun Edison LLC; Solaicx | Wells Fargo Bank, National Association, as Administrative Agent | Security Interest |
| Jan 13, 2016 Reel 37508, frame 606 | SunEdison, Inc.; Sun Edison LLC; Solaicx; NVT, LLC | Wilmington Trust, National Association, Solely in Its Capacity as Collateral Trustee | Security Interest |
| Jan 13, 2016 Reel 37508, frame 884 | Goldman Sachs Bank USA, as Administrative Agent | SunEdison, Inc.; Sun Edison LLC; Solaicx; NVT, LLC | Release of Security Interest |
| Jan 13, 2016 reel/frame not recorded | Goldman Sachs Bank USA, as Administrative Agent | SunEdison, Inc. | Release of Security Interest |
| Jan 13, 2016 reel/frame not recorded | Goldman Sachs Bank USA, as Administrative Agent | Sun Edison LLC | Release of Security Interest |
| Jan 13, 2016 reel/frame not recorded | Goldman Sachs Bank USA, as Administrative Agent | Solaicx | Release of Security Interest |
| Jan 13, 2016 reel/frame not recorded | Goldman Sachs Bank USA, as Administrative Agent | NVT, LLC | Release of Security Interest |
| Apr 28, 2016 Reel 38557, frame 472 | SunEdison, Inc. | Deutsche Bank AG New York Branch, as Administrative Agent | Patent Security Agreement |
| Aug 16, 2017 Reel 43569, frame 300 | SunEdison Inc.; SunEdison Utility Holdings, Inc.; PVT Solar, Inc.; SunEdison Products Singapore Pte. Ltd. | FTC Solar, 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.
What's changing
Note
The 1212 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
172
later US patents cite this one
That is top 5% 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.