Lapsed Dec 11, 2022 on the fee record · Medium confidence
20-year base term ends Jul 31, 2029
Why Medium: A parent in the chain could not be resolved.
First maintenance fee unpaid; grace period ended.
Held by Power Integrations, Inc.
Filed Jun 30, 2017 as application 15/640,005 · Granted Dec 11, 2018
Base term, 20 years from filing
Today
Lapsed Dec 11, 2022
2009
2029
Clock starts
Jul 31, 2009
Jul 31, 2009
No longer in force
Dec 11, 2022
Dec 11, 2022
Granted
Dec 11, 2018
Dec 11, 2018
Term would have run to
Jul 31, 2029
Jul 31, 2029
base term
after the term ends
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.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
6
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 31, 2029: its 20-year base term, with no adjustment for prosecution delay. Confidence: Medium. 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 Jul 31, 2009, when application 12/533,977, the earliest non-provisional in its chain, was filed (this one was filed Jun 30, 2017); a parent in its chain could not be resolved (the next row) | Jul 31, 2029 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium 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 | 0 of 2 maintenance fees paid | lapsed Dec 11, 2022 | High confidence |
| Computed term end | The steps above, in order | Dec 11, 2022 | Medium confidence |
This family
| US 8,115,457 | In force Oct 2030 | Oct 2030 |
| US 9,065,340 | In force no later than Jul 2029 | no later than Jul 2029 |
| US 9,735,665 | In force Jul 2029 | Jul 2029 |
| US 10,153,687 | this patent Dec 2022 | Dec 2022 |
| US 10,608,525 | Lapsed on the fee record Mar 2024 | Mar 2024 |
5 of 6 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
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.
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Alerts on its grants, lapses and transfers.
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2018 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.