Term ends Feb 18, 2036 · High confidence
20-year base term ends May 6, 2035
Held by VertiFlex, Inc.
Filed May 10, 2022 as application 17/741,258 · Granted Jul 16, 2024
Base term plus 288 days of patent term adjustment (USPTO delay)
Today
2015
2036
Clock starts
May 6, 2015
May 6, 2015
Term ends
Feb 18, 2036
Feb 18, 2036
Granted
Jul 16, 2024
Jul 16, 2024
base term
patent term adjustment
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
288
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 10,524,772, to Feb 18, 2036. The term already ends on or before that date, so the cap shortened nothing.
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.
This patent's term runs 288 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 2 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 May 6, 2015, when application PCT/US2015/029537, the earliest non-provisional in its chain, was filed (this one was filed May 10, 2022) | May 6, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +288 days, USPTO patent term adjustment record | Feb 18, 2036 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,524,772) | resolves to Feb 18, 2036, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 18, 2036 | High confidence |
This family
| Application PCT/US2015/029537 | PCT application no patent term | no patent term |
| US 10,524,772 | In force May 2036 | May 2036 |
| US 11,357,489 | In force Apr 2036 | Apr 2036 |
| US 12,035,884 | this patent Feb 2036 | Feb 2036 |
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
Feb 2036
Term ends Feb 18, 2036. Maintenance fees still fall due before then
Note
The 288 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 10,524,772, ends no earlier than this term, so it caps nothing.
Citations
8
later US patents cite this one
Fewer than half of the utility patents granted in 2024 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.