Collateral for a security interest recorded Jul 29, 2025 (PLF 2025-A LP).
Term ends Feb 14, 2028 · High confidence
20-year base term ended Nov 24, 2024
Held by Teratech Corporation
Filed Nov 21, 2018 as application 16/197,754 · Granted Jun 13, 2023
Base term plus 1177 days of patent term adjustment (USPTO delay)
Today
2004
2028
Clock starts
Nov 24, 2004
Nov 24, 2004
Term ends
Feb 14, 2028
Feb 14, 2028
Granted
Jun 13, 2023
Jun 13, 2023
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
1,177
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 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
3
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 1177 days past its 20-year base term on prosecution delay. 0 of 1 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 Nov 24, 2004, when application 10/997,062, the earliest non-provisional in its chain, was filed (this one was filed Nov 21, 2018) | Nov 24, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1177 days, USPTO patent term adjustment record | Feb 14, 2028 | 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 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 14, 2028 | High confidence |
This family
| Application 10/997,062 | Abandoned not computed | not computed |
| US 10,139,489 | Term ended Sep 2025 | Sep 2025 |
| US 11,675,073 | this patent Feb 2028 | Feb 2028 |
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 |
|---|---|---|---|
| Jan 8, 2019 Reel 47934, frame 289 | Brodsky, Michael; Chiang, Alice M.; Maurer, David; Wong, William | 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
Feb 2028
Term ends Feb 14, 2028. Maintenance fees still fall due before then
Note
The 1177 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is top 5% of utility patents granted in 2023 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.