Collateral for a security interest recorded Jul 29, 2025 (PLF 2025-A LP).
Term ends Dec 25, 2033 · High confidence
20-year base term ends Mar 15, 2033
Held by Teratech Corporation
Filed Mar 2, 2020 as application 16/806,118 · Granted Oct 15, 2024
Base term plus 285 days of patent term adjustment (USPTO delay)
Today
2013
2033
Clock starts
Mar 15, 2013
Mar 15, 2013
Term ends
Dec 25, 2033
Dec 25, 2033
Granted
Oct 15, 2024
Oct 15, 2024
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
285
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.
14
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 285 days past its 20-year base term on prosecution delay. 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 Mar 15, 2013, when application 13/838,694, the earliest non-provisional in its chain, was filed (this one was filed Mar 2, 2020) | Mar 15, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +285 days, USPTO patent term adjustment record | Dec 25, 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 | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 25, 2033 | High confidence |
This family
| US 10,667,790 | In force Mar 2033 | Mar 2033 |
| Application PCT/US2013/033941 | PCT application no patent term | no patent term |
| US 9,877,699 | In force Mar 2033 | Mar 2033 |
| Application PCT/US2014/057516 | PCT application no patent term | no patent term |
| US 12,588,893 | In force Mar 2033 | Mar 2033 |
| US 11,179,138 | In force Mar 2033 | Mar 2033 |
| US 12,115,023 | this patent Dec 2033 | Dec 2033 |
| US 11,857,363 | In force Mar 2033 | Mar 2033 |
8 of 14 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 |
|---|---|---|---|
| Mar 4, 2020 Reel 52013, frame 988 | Chiang, Alice M.; Wong, William M.; Berger, Noah | Teratech Corporation | Assignment of Assignor's Interest |
| Jul 29, 2025 Reel 71862, frame 356 | Teratech Corp. | PLF 2025-A LP | Security Interest |
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
Dec 2033
Term ends Dec 25, 2033. Maintenance fees still fall due before then
Note
The 285 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
13
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.