Term ends Nov 30, 2026 · High confidence
20-year base term ends Nov 30, 2026
Filed Mar 26, 2009 as application 12/411,820 · Granted Nov 8, 2011
Base term, 20 years from filing
Today
2006
2026
Clock starts
Nov 30, 2006
Nov 30, 2006
Term ends
Nov 30, 2026
Nov 30, 2026
Granted
Nov 8, 2011
Nov 8, 2011
base term
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 7,531,888, to Nov 30, 2026. The term already ends on or before that date, so the cap shortened nothing.
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.
75
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Nov 30, 2006, when application 11/564,948, the earliest non-provisional in its chain, was filed (this one was filed Mar 26, 2009) | Nov 30, 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 | Disclaimer resolved from the filed document (refs US 7,531,888) | resolves to Nov 30, 2026, no earlier than this term, so no change | 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 | Nov 30, 2026 | High confidence |
This family
| US 6,469,384 | Lapsed on the fee record Oct 2014 | Oct 2014 |
| US 6,635,535 | Lapsed on the fee record Oct 2015 | Oct 2015 |
| US 6,955,978 | Lapsed on the fee record Oct 2017 | Oct 2017 |
| US 6,784,505 | Term ended May 2022 | May 2022 |
| US 7,061,077 | Term ended May 2023 | May 2023 |
| US 6,740,541 | Term ended Feb 2021 | Feb 2021 |
| US 6,825,510 | Term ended Nov 2022 | Nov 2022 |
| US 6,891,256 | Term ended Oct 2022 | Oct 2022 |
8 of 75 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 |
|---|---|---|---|
| Sep 19, 2016 Reel 40075, frame 644 | Fairchild Semiconductor Corporation | Deutsche Bank AG New York Branch, as Collateral Agent | Patent Security Agreement |
| Aug 3, 2021 Reel 57694, frame 374 | Fairchild Semiconductor Corporation | Semiconductor Components Industries, LLC | Assignment of Assignor's Interest |
| Oct 28, 2021 Reel 57969, frame 206 | Deutsche Bank AG New York Branch | Fairchild Semiconductor Corporation | Release of Security Interest |
| Nov 12, 2021 Reel 58871, frame 799 | Semiconductor Components Industries, LLC | Deutsche Bank AG New York Branch, as Collateral Agent | Security Interest |
| Jun 22, 2023 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | Semiconductor Components Industries, LLC | Release of Security Interest in Patents Recorded at Reel 040075, Frame 0644 |
| Jun 22, 2023 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | Fairchild Semiconductor Corporation | Release of Security Interest in Patents Recorded at Reel 040075, Frame 0644 |
| Jun 22, 2023 Reel 64070, frame 536 | Deutsche Bank AG New York Branch, as Collateral Agent | Semiconductor Components Industries, LLC; Fairchild Semiconductor Corporation | Release of Security Interest in Patents Recorded at Reel 040075, Frame 0644 |
| Jun 23, 2023 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | Semiconductor Components Industries, LLC | Release of Security Interest in Patents Recorded at Reel 058871, Frame 0799 |
| Jun 23, 2023 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | Fairchild Semiconductor Corporation | Release of Security Interest in Patents Recorded at Reel 058871, Frame 0799 |
| Jun 23, 2023 Reel 65653, frame 1 | Deutsche Bank AG New York Branch, as Collateral Agent | Semiconductor Components Industries, LLC; Fairchild Semiconductor Corporation | Release of Security Interest in Patents Recorded at Reel 058871, Frame 0799 |
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
Nov 2026
Term ends Nov 30, 2026. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 7,531,888, ends no earlier than this term, so it caps nothing.
Citations
1
later US patent cites this one
That is below 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.