Term ends Mar 23, 2042 · High confidence
20-year base term ends Mar 27, 2039
Held by Kanadevia Inova AG
Filed Mar 11, 2021 as application 17/042,684 · Granted Apr 22, 2025
Base term plus 1092 days of patent term adjustment (USPTO delay)
Today
2019
2042
Clock starts
Mar 27, 2019
Mar 27, 2019
Term ends
Mar 23, 2042
Mar 23, 2042
Granted
Apr 22, 2025
Apr 22, 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
1,092
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
2
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 1092 days past its 20-year base term on prosecution delay. 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 Mar 27, 2019, when application PCT/EP2019/057752, the earliest non-provisional in its chain, was filed (this one was filed Mar 11, 2021) | Mar 27, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1092 days, USPTO patent term adjustment record | Mar 23, 2042 | 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 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 23, 2042 | High confidence |
This family
| US 12,281,791 | this patent Mar 2042 | Mar 2042 |
1 of 2 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 |
|---|---|---|---|
| Nov 19, 2020 Reel 54421, frame 876 | Müller, Paul; Herz, Harald | Explo Engineering AG; Martin GmbH Für Umwelt- und Energietechnik; Rüegg, Hans; Hitachi Zosen Inova AG | Assignment of Assignor's Interest |
| Nov 19, 2020 reel/frame not recorded | Müller, Paul; Herz, Harald | Explo Engineering AG | Assignment of Assignor's Interest |
| Nov 19, 2020 reel/frame not recorded | Müller, Paul; Herz, Harald | Martin GmbH Für Umwelt- und Energietechnik | Assignment of Assignor's Interest |
| Nov 19, 2020 reel/frame not recorded | Müller, Paul; Herz, Harald | Rüegg, Hans | Assignment of Assignor's Interest |
| Nov 19, 2020 reel/frame not recorded | Müller, Paul; Herz, Harald | Hitachi Zosen Inova AG | Assignment of Assignor's Interest |
| Apr 11, 2025 Reel 70825, frame 217 | Hitachi Zosen Inova AG | Kanadevia Inova AG | Change of Name |
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
Mar 2042
Term ends Mar 23, 2042. Maintenance fees still fall due before then
Note
The 1092 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
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.