Term ended no later than Jun 12, 2024 · Low confidence
20-year base term ended Feb 10, 2024
Held by Ixys Intl Limited
Filed Feb 9, 2015 as application 14/617,928 · Granted Jan 10, 2017
Base term plus 123 days of patent term adjustment (USPTO delay)
Today
Ended no later than Jun 12, 2024
2004
2026
Clock starts
Feb 10, 2004
Feb 10, 2004
Ended no later than
Jun 12, 2024
Jun 12, 2024
Granted
Jan 10, 2017
Jan 10, 2017
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
123
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
10
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 123 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Low. 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 10, 2004, when application 10/777,023, the earliest non-provisional in its chain, was filed (this one was filed Feb 9, 2015); a parent in its chain could not be resolved (the next row) | Feb 10, 2024 | 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 | +123 days, USPTO patent term adjustment record | Jun 12, 2024 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | no later than Jun 12, 2024 | Low confidence |
This family
| US 7,259,696 | Term ended Aug 2025 | Aug 2025 |
| US 7,339,513 | Term ended Oct 2024 | Oct 2024 |
| US 7,286,076 | Lapsed on the fee record Oct 2019 | Oct 2019 |
| US 7,936,287 | Term ended Aug 2026 | Aug 2026 |
| US 8,952,840 | In force no later than Dec 2028 | no later than Dec 2028 |
| US 8,174,411 | Term ended Feb 2024 | Feb 2024 |
| US 9,792,133 | Term ended Aug 2024 | Aug 2024 |
| US 9,542,212 | this patent no later than Jun 2024 | no later than Jun 2024 |
8 of 10 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 |
|---|---|---|---|
| Feb 10, 2015 Reel 34923, frame 564 | Provis, Adam P.g.; Vergis, George C.; Miramontes, Oscar C. | Zilog, Inc. | Assignment of Assignor's Interest |
| Feb 10, 2015 Reel 34923, frame 567 | Zilog, Inc. | Uei Cayman Inc. | Assignment of Assignor's Interest |
| Feb 10, 2015 Reel 34923, frame 574 | Uei Cayman Inc. | Ixys CH GmbH | Assignment of Assignor's Interest |
| May 19, 2015 Reel 35672, frame 304 | Ixys CH GmbH | Ixys Intl Limited | 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.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 123 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jun 12, 2024. We will not guess the cap.
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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.