Term ended May 2, 2026 · High confidence
20-year base term ended May 2, 2026
Held by Power Integrations, Inc.
Filed May 2, 2006 as application 11/415,279 · Granted Sep 25, 2007
Base term, 20 years from filing
Today
Term ended May 2, 2026
2006
2026
Clock starts
May 2, 2006
May 2, 2006
Term ended
May 2, 2026
May 2, 2026
Granted
Sep 25, 2007
Sep 25, 2007
base term
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
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.
25
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 were paid, so no fee lapse ended it. 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 2, 2006, when this application, 11/415,279, was filed | May 2, 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 | term ended | High confidence |
| Computed term end | The steps above, in order | May 2, 2026 | High confidence |
This family
| US 7,202,528 | Term ended no later than Apr 2025 | no later than Apr 2025 |
| Application PCT/US2005/042982 | PCT application no patent term | no patent term |
| US 7,274,083 | this patent May 2026 | May 2026 |
| US 7,556,994 | Lapsed on the fee record Jul 2021 | Jul 2021 |
| Application PCT/US2007/010712 | PCT application no patent term | no patent term |
| US 7,602,228 | In force May 2027 | May 2027 |
| US 7,821,015 | Lapsed on the fee record Oct 2022 | Oct 2022 |
| Application PCT/US2007/071549 | PCT application no patent term | no patent term |
8 of 25 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 |
|---|---|---|---|
| Jul 31, 2006 Reel 18022, frame 520 | Sankin, Igor; Merrett, Joseph Neil | Semisouth Laboratories, Inc. | Assignment of Assignor's Interest |
| Dec 22, 2009 Reel 23691, frame 114 | Semisouth Laboratories, Inc. | Bluecrest Venture Finance Master Fund Limited | Security Agreement |
| Jul 25, 2011 Reel 26645, frame 351 | Bluecrest Venture Finance Master Fund Limited | Semisouth Laboratories, Inc. | Release of Security Interest |
| Sep 23, 2011 Reel 26959, frame 412 | Semisouth Laboratories, Inc. | SS SC IP, LLC | Assignment of Assignor's Interest |
| Jul 5, 2013 Reel 30740, frame 368 | SS SC IP, LLC | Power Integrations, 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
Citations
10
later US patents cite this one
That is below the median of utility patents granted in 2007 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.