Term ends Jan 6, 2032 · Medium confidence
20-year base term ends Jan 5, 2032
Why Medium: A parent in the chain could not be resolved.
Held by Littelfuse, Inc.
Filed Nov 2, 2018 as application 16/179,432 · Granted Jul 21, 2020
Base term plus 1 days of patent term adjustment (USPTO delay)
Today
2012
2032
Clock starts
Jan 5, 2012
Jan 5, 2012
Term ends
Jan 6, 2032
Jan 6, 2032
Granted
Jul 21, 2020
Jul 21, 2020
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
4
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 1 days past its 20-year base term on prosecution delay. 1 of 2 maintenance fees is 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 Jan 5, 2012, when application 13/344,567, the earliest non-provisional in its chain, was filed (this one was filed Nov 2, 2018); a parent in its chain could not be resolved (the next row) | Jan 5, 2032 | 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 | +1 days, USPTO patent term adjustment record | Jan 6, 2032 | 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 | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 6, 2032 | Medium confidence |
This family
| Application 13/344,567 | Abandoned not computed | not computed |
| Application 15/452,699 | Abandoned not computed | not computed |
| US 10,720,376 | this patent Jan 2032 | Jan 2032 |
| US 11,387,162 | In force Jan 2032 | Jan 2032 |
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 |
|---|---|---|---|
| May 1, 2019 Reel 49056, frame 649 | Ixys, LLC | Littelfuse, 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.
What's changing
Jan 2032
Term ends Jan 6, 2032. Maintenance fees still fall due before then
Note
The 1 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2020 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.