Term ends Jul 31, 2029 · Medium confidence
20-year base term ends Jul 31, 2029
Held by Power Integrations, Inc.
Filed May 20, 2015 as application 14/717,620 · Granted Aug 15, 2017
Base term plus 201 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2009
2029
Clock starts
Jul 31, 2009
Jul 31, 2009
Term ends
Jul 31, 2029
Jul 31, 2029
Granted
Aug 15, 2017
Aug 15, 2017
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
201
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,065,340.
2 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.
This patent's term runs 201 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 2 of 2 maintenance fees are paid so far. 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 May 20, 2015); 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 | +201 days, USPTO patent term adjustment record | Feb 17, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,065,340) | capped to Jul 31, 2029 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 31, 2029 | 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 | this patent Jul 2029 | Jul 2029 |
| US 10,153,687 | Lapsed on the fee record 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jul 2029
Term ends Jul 31, 2029. No further fees fall due before then
Note
The 201 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,065,340.
Citations
6
later US patents cite this one
That is above the median of utility patents granted in 2017 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.