Lapsed Dec 20, 2023 on the fee record · High confidence
20-year base term ended Feb 3, 2026
Third maintenance fee unpaid; grace period ended.
Held by Psemi Corporation
Filed Feb 3, 2006 as application 11/347,671 · Granted Dec 20, 2011
Base term, 20 years from filing, plus 1258 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 20, 2023
2006
2029
Clock starts
Feb 3, 2006
Feb 3, 2006
No longer in force
Dec 20, 2023
Dec 20, 2023
Granted
Dec 20, 2011
Dec 20, 2011
Term would have run to
Jul 15, 2029
Jul 15, 2029
base term
patent term adjustment
after the term ends
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
1,258
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.
56
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 Jul 15, 2029: its 20-year base term plus 1258 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 3, 2006, when this application, 11/347,671, was filed | Feb 3, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1258 days, USPTO patent term adjustment record | Jul 15, 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 Dec 20, 2023 | High confidence |
| Computed term end | The steps above, in order | Dec 20, 2023 | High confidence |
This family
| US 6,737,900 | Term ended Apr 2022 | Apr 2022 |
| US 7,719,343 | Term ended Feb 2025 | Feb 2025 |
| US 7,248,120 | Term ended Jun 2024 | Jun 2024 |
| US 7,613,442 | In force Sep 2027 | Sep 2027 |
| US 7,088,971 | Term ended Jun 2024 | Jun 2024 |
| US 8,081,928 | this patent Dec 2023 | Dec 2023 |
| US 7,619,462 | In force Jul 2027 | Jul 2027 |
| US 8,131,251 | Lapsed on the fee record Mar 2024 | Mar 2024 |
8 of 56 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 14, 2006 Reel 18159, frame 873 | Kelly, Dylan J. | Peregrine Semiconductor Corporation | Assignment of Assignor's Interest |
| Jan 24, 2018 Reel 45749, frame 391 | Peregrine Semiconductor Corporation | Psemi Corporation | Change of Name |
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 1258 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
60
later US patents cite this one
That is top 25% 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.