Term ends Dec 1, 2026 · High confidence
20-year base term ended Apr 15, 2025
Held by Agamatrix, Inc.
Filed Jun 15, 2017 as application 15/623,662 · Granted Apr 20, 2021
Base term plus 595 days of patent term adjustment (USPTO delay)
Today
2005
2026
Clock starts
Apr 15, 2005
Apr 15, 2005
Term ends
Dec 1, 2026
Dec 1, 2026
Granted
Apr 20, 2021
Apr 20, 2021
base term
patent term adjustment
fee events
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
595
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 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.
8
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 595 days past its 20-year base term on prosecution delay. 1 of 1 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 Apr 15, 2005, when application 10/907,790, the earliest non-provisional in its chain, was filed (this one was filed Jun 15, 2017) | Apr 15, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +595 days, USPTO patent term adjustment record | Dec 1, 2026 | 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 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 1, 2026 | High confidence |
This family
| US 7,964,146 | In force Mar 2030 | Mar 2030 |
| US 8,591,815 | Term ended May 2025 | May 2025 |
| Application 13/108,682 | Abandoned not computed | not computed |
| US 8,852,510 | Term ended Apr 2025 | Apr 2025 |
| US 9,097,651 | Term ended Apr 2025 | Apr 2025 |
| US 9,267,910 | Term ended Apr 2025 | Apr 2025 |
| US 9,709,519 | Term ended Apr 2025 | Apr 2025 |
| US 10,983,083 | this patent Dec 2026 | Dec 2026 |
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 |
|---|---|---|---|
| Aug 29, 2017 Reel 43432, frame 436 | Harding, Ian; Iyengar, Sridhar G.; Wei, Baoguo; Diamond, Steven; Forest, Martin | Agamatrix, Inc. | Assignment of Assignor's Interest |
| Sep 29, 2017 Reel 44063, frame 828 | Agamatrix, Inc. | Prospect Capital Corporation | Patent Security Agreement |
| May 11, 2023 Reel 63604, frame 749 | Prospect Capital Corporation, As Collateral Agent | Agamatrix, Inc. | Release of Patent Security Agreement |
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 2026
Term ends Dec 1, 2026. No further fees fall due before then
Note
The 595 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
10
later US patents cite this one
That is top 25% 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.