Term ended Mar 14, 2026 · High confidence
20-year base term ended Aug 14, 2023
Held by Nvidia Corporation
Filed Aug 14, 2003 as application 10/641,976 · Granted Apr 1, 2008
Base term plus 943 days of patent term adjustment (USPTO delay)
Today
Term ended Mar 14, 2026
2003
2026
Clock starts
Aug 14, 2003
Aug 14, 2003
Term ended
Mar 14, 2026
Mar 14, 2026
Granted
Apr 1, 2008
Apr 1, 2008
base term
patent term adjustment
after the term ends
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
943
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
2
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 943 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Aug 14, 2003, when this application, 10/641,976, was filed | Aug 14, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +943 days, USPTO patent term adjustment record | Mar 14, 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 | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Mar 14, 2026 | High confidence |
This family
| US 7,353,516 | this patent Mar 2026 | Mar 2026 |
| US 8,296,764 | In force Sep 2028 | Sep 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 |
|---|---|---|---|
| Aug 14, 2003 Reel 14405, frame 294 | Heidari-bateni, Ghobad; Sambhwani, Sharad D. | Quicksilver Technology, Inc. | Assignment of Assignor's Interest |
| Aug 30, 2006 Reel 18194, frame 515 | Quicksilver Technology, Inc. | Techfarm Ventures Management, LLC | Assignment of Assignor's Interest |
| Sep 5, 2006 Reel 18224, frame 634 | Techfarm Ventures Management, LLC | QST Holdings, LLC | Assignment of Assignor's Interest |
| Jan 5, 2007 Reel 18711, frame 567 | Qst Holdings, L.l.c. | Nvidia Corporation | Assignment of Assignor's Interest |
| Feb 15, 2007 Reel 18923, frame 630 | QST Holdings, LLC | Nvidia Corporation | Corrective Assignment on Reel 018711, Frame 0567 |
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
Note
The 943 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
45
later US patents cite this one
That is top 25% of utility patents granted in 2008 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.