Term ends Aug 15, 2039 · High confidence
20-year base term ends Jun 25, 2039
Held by TDK Electronics AG
Filed Aug 3, 2023 as application 18/364,706 · Granted Aug 5, 2025
Base term plus 51 days of patent term adjustment (USPTO delay)
Today
2019
2039
Clock starts
Jun 25, 2019
Jun 25, 2019
Term ends
Aug 15, 2039
Aug 15, 2039
Granted
Aug 5, 2025
Aug 5, 2025
base term
patent term adjustment
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
51
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,755,112, to Aug 15, 2039. The term already ends on or before that date, so the cap shortened nothing.
0 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.
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 51 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 3 maintenance fees are paid so far. 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 Jun 25, 2019, when application PCT/EP2019/066841, the earliest non-provisional in its chain, was filed (this one was filed Aug 3, 2023) | Jun 25, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +51 days, USPTO patent term adjustment record | Aug 15, 2039 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,755,112) | resolves to Aug 15, 2039, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 15, 2039 | High confidence |
This family
| US 11,755,112 | In force Nov 2039 | Nov 2039 |
| US 12,379,782 | this patent Aug 2039 | Aug 2039 |
| Application 19/249,795 | Pending not computed | not computed |
3 of 4 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.
What's changing
Aug 2039
Term ends Aug 15, 2039. Maintenance fees still fall due before then
Note
The 51 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,755,112, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
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.