Term ends Dec 28, 2026 · High confidence
20-year base term ends Dec 28, 2026
Held by GlobalWafers Co., Ltd.
Filed Dec 7, 2009 as application 12/631,929 · Granted Apr 19, 2011
Base term, 20 years from filing
Today
2006
2026
Clock starts
Dec 28, 2006
Dec 28, 2006
Term ends
Dec 28, 2026
Dec 28, 2026
Granted
Apr 19, 2011
Apr 19, 2011
base term
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
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.
7
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 are recorded paid; no more fees are due. 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 Dec 28, 2006, when application 11/617,430, the earliest non-provisional in its chain, was filed (this one was filed Dec 7, 2009) | Dec 28, 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 | In force | High confidence |
| Computed term end | The steps above, in order | Dec 28, 2026 | High confidence |
This family
| US 7,662,023 | Lapsed on the fee record Feb 2018 | Feb 2018 |
| US 7,601,049 | In force Feb 2027 | Feb 2027 |
| Application PCT/US2007/060981 | PCT application no patent term | no patent term |
| US 7,930,058 | In force Aug 2028 | Aug 2028 |
| Application PCT/US2008/088452 | PCT application no patent term | no patent term |
| US 7,927,185 | this patent Dec 2026 | Dec 2026 |
| US 8,145,342 | In force Dec 2026 | Dec 2026 |
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 |
|---|---|---|---|
| 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 |
| 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 |
| May 27, 2014 Reel 33023, frame 430 | Memc Electronic Materials, Inc. | SunEdison Semiconductor Limited (UEN201334164H) | Assignment of Assignor's Interest |
| Jun 6, 2014 Reel 33099, frame 1 | SunEdison Semiconductor Limited | SunEdison Semiconductor Technology Pte. Ltd. | Notice of License Agreement |
| Jun 7, 2018 Reel 46327, frame 1 | SunEdison Semiconductor Limited; Memc Japan Limited; Memc Electronic Materials S.P.A. | GlobalWafers Co., Ltd. | 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.
What's changing
Dec 2026
Term ends Dec 28, 2026. No further fees fall due before then
Citations
11
later US patents cite this one
That is above the median of utility patents granted in 2011 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.