Term ends May 20, 2033 · High confidence
20-year base term ends Feb 14, 2033
Held by Cornell University
Filed May 24, 2019 as application 16/422,538 · Granted Dec 28, 2021
Base term plus 95 days of patent term adjustment (USPTO delay)
Today
2013
2033
Clock starts
Feb 14, 2013
Feb 14, 2013
Term ends
May 20, 2033
May 20, 2033
Granted
Dec 28, 2021
Dec 28, 2021
base term
patent term adjustment
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
95
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.
6
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 95 days past its 20-year base term on prosecution delay. 1 of 2 maintenance fees is 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 Feb 14, 2013, when application PCT/US2013/026180, the earliest non-provisional in its chain, was filed (this one was filed May 24, 2019) | Feb 14, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +95 days, USPTO patent term adjustment record | May 20, 2033 | 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 | May 20, 2033 | High confidence |
This family
| Application PCT/US2013/026180 | PCT application no patent term | no patent term |
| US 9,598,728 | In force Jul 2033 | Jul 2033 |
| US 10,338,062 | In force Jul 2033 | Jul 2033 |
| US 11,209,424 | this patent May 2033 | May 2033 |
| US 12,174,176 | In force Sep 2033 | Sep 2033 |
| Application 18/939,959 | Pending not computed | not computed |
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
May 2033
Term ends May 20, 2033. Maintenance fees still fall due before then
Note
The 95 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 2021 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.