Lapsed Dec 29, 2024 on the fee record · High confidence
20-year base term ends Jun 10, 2030
First maintenance fee unpaid; grace period ended.
Held by KCI USA, Inc.
Filed Nov 9, 2017 as application 15/808,760 · Granted Dec 29, 2020
Base term, 20 years from filing, plus 576 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 29, 2024
2010
2032
Clock starts
Jun 10, 2010
Jun 10, 2010
No longer in force
Dec 29, 2024
Dec 29, 2024
Granted
Dec 29, 2020
Dec 29, 2020
Term would have run to
Jan 7, 2032
Jan 7, 2032
base term
patent term adjustment
after the term ends
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
576
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 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.
Its term would have run to Jan 7, 2032: its 20-year base term plus 576 days of term adjustment for prosecution delay. 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 10, 2010, when application PCT/GB2010/001143, the earliest non-provisional in its chain, was filed (this one was filed Nov 9, 2017) | Jun 10, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +576 days, USPTO patent term adjustment record | Jan 7, 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 | 0 of 2 maintenance fees paid | lapsed Dec 29, 2024 | High confidence |
| Computed term end | The steps above, in order | Dec 29, 2024 | High confidence |
This family
| US 8,992,509 | In force Dec 2030 | Dec 2030 |
| US 9,839,559 | Lapsed on the fee record Dec 2025 | Dec 2025 |
| US 10,874,556 | this patent Dec 2024 | Dec 2024 |
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
The 576 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is above 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.