Collateral for a security interest recorded Feb 28, 2014 (Wells Fargo Bank, National Association).
Lapsed Sep 25, 2024 on the fee record · High confidence
20-year base term ends Feb 9, 2029
Third maintenance fee unpaid; grace period ended.
Held by SunEdison, LLC
Filed Aug 10, 2010 as application 12/853,838 · Granted Sep 25, 2012
Base term, 20 years from filing, plus 123 days of patent term adjustment (USPTO delay)
Today
Lapsed Sep 25, 2024
2009
2029
Clock starts
Feb 9, 2009
Feb 9, 2009
No longer in force
Sep 25, 2024
Sep 25, 2024
Granted
Sep 25, 2012
Sep 25, 2012
Term would have run to
Jun 12, 2029
Jun 12, 2029
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
123
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.
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 Jun 12, 2029: its 20-year base term plus 123 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 Feb 9, 2009, when application 12/367,977, the earliest non-provisional in its chain, was filed (this one was filed Aug 10, 2010) | Feb 9, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +123 days, USPTO patent term adjustment record | Jun 12, 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 | lapsed Sep 25, 2024 | High confidence |
| Computed term end | The steps above, in order | Sep 25, 2024 | High confidence |
This family
| US 8,344,239 | Term ended Oct 2026 | Oct 2026 |
| US 7,856,769 | Lapsed on the fee record 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 | this patent 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 |
|---|---|---|---|
| Aug 30, 2010 Reel 24907, frame 633 | Wallgren, Linus Eric | SunEdison, LLC | Assignment of Assignor's Interest |
| Apr 1, 2011 Reel 26064, frame 720 | Memc Electronic Materials, Inc.; SunEdison LLC; Solaicx | Bank Of America, N.a. | Security Agreement |
| Oct 1, 2012 Reel 29057, frame 810 | NVT, LLC; Sun Edison LLC; Solaicx, Inc.; Memc Electronic Materials, Inc. | Goldman Sachs Bank USA | Security Agreement |
| Dec 26, 2013 Reel 31870, frame 31 | Bank Of America, N.a. | Enflex Corporation; Sun Edison LLC; Solaicx; SunEdison, Inc. (F/K/A Memc Electronic Materials, Inc.) | Release of Security Interest |
| Dec 26, 2013 Reel 31870, frame 92 | Goldman Sachs Bank USA | NVT, LLC; Sun Edison LLC; Solaicx; SunEdison, Inc. (F/K/A Memc Electronic Materials, Inc.) | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Bank Of America, N.a. | Enflex Corporation | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Bank Of America, N.a. | Sun Edison LLC | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Bank Of America, N.a. | Solaicx | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Bank Of America, N.a. | SunEdison, Inc. (F/K/A Memc Electronic Materials, Inc.) | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Goldman Sachs Bank USA | NVT, LLC | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Goldman Sachs Bank USA | Sun Edison LLC | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Goldman Sachs Bank USA | Solaicx | Release of Security Interest |
| Dec 26, 2013 reel/frame not recorded | Goldman Sachs Bank USA | SunEdison, Inc. (F/K/A Memc Electronic Materials, Inc.) | Release of Security Interest |
| Jan 30, 2014 Reel 32177, frame 359 | SunEdison, Inc.; Solaicx; Sun Edison, LLC; NVT, LLC | Deutsche Bank AG New York Branch | Security Agreement |
| Feb 28, 2014 Reel 32372, frame 610 | SunEdison, Inc.; Sun Edison LLC; Solaicx; NVT, LLC; Enflex Corporation | Wells Fargo Bank, National Association, as Administrative Agent | Security Agreement |
| Mar 3, 2014 Reel 32382, frame 724 | Deutsche Bank AG New York Branch | NVT, LLC; Sun Edison LLC; Solaicx; SunEdison, Inc. | Release of Security Interest |
| Mar 3, 2014 reel/frame not recorded | Deutsche Bank AG New York Branch | NVT, LLC | Release of Security Interest |
| Mar 3, 2014 reel/frame not recorded | Deutsche Bank AG New York Branch | Sun Edison LLC | Release of Security Interest |
| Mar 3, 2014 reel/frame not recorded | Deutsche Bank AG New York Branch | Solaicx | Release of Security Interest |
| Mar 3, 2014 reel/frame not recorded | Deutsche Bank AG New York Branch | SunEdison, Inc. | Release of Security 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 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 38556, frame 745 | SunEdison, LLC | Deutsche Bank AG New York Branch, as Administrative Agent | Patent Security Agreement |
| Apr 30, 2021 Reel 56106, frame 643 | FTC Solar, Inc. | Barclays Bank PLC | Intellectual Property Security Agreement |
| Nov 26, 2024 Reel 69450, frame 947 | Barclays Bank PLC, as Administrative Agent | FTC Solar, 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
The 123 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
34
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.