Term ends Feb 3, 2028 · High confidence
20-year base term ends Dec 19, 2027
Filed Dec 19, 2007 as application 11/960,657 · Granted Sep 29, 2009
Base term plus 46 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Dec 19, 2007
Dec 19, 2007
Term ends
Feb 3, 2028
Feb 3, 2028
Granted
Sep 29, 2009
Sep 29, 2009
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
46
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.
4
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 46 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Dec 19, 2007, when this application, 11/960,657, was filed | Dec 19, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +46 days, USPTO patent term adjustment record | Feb 3, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 3, 2028 | High confidence |
This family
| US 7,595,764 | this patent Feb 2028 | Feb 2028 |
| US 8,816,923 | Lapsed on the fee record Aug 2026 | Aug 2026 |
| US D669,454 | Term ended Oct 2026 | Oct 2026 |
| US 9,225,061 | In force Dec 2027 | Dec 2027 |
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 |
|---|---|---|---|
| Apr 10, 2008 Reel 20782, frame 132 | Shuster, Sam; King, Lael | Wallace Technologies | Assignment of Assignor's Interest |
| Sep 11, 2009 Reel 23217, frame 766 | Wallace Technologies | Electronic Controlled Systems, Inc. | Assignment of Assignor's 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.
What's changing
Feb 2028
Term ends Feb 3, 2028. No further fees fall due before then
Note
The 46 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
46
later US patents cite this one
That is top 25% of utility patents granted in 2009 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.