Also listed on Maxsp Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Sep 23, 2027 · High confidence
20-year base term ends Dec 21, 2026
Filed Dec 21, 2006 as application 11/644,581 · Granted Nov 30, 2010
Base term plus 276 days of patent term adjustment (USPTO delay)
Today
2006
2027
Clock starts
Dec 21, 2006
Dec 21, 2006
Term ends
Sep 23, 2027
Sep 23, 2027
Granted
Nov 30, 2010
Nov 30, 2010
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
276
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.
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 276 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 21, 2006, when this application, 11/644,581, was filed | Dec 21, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +276 days, USPTO patent term adjustment record | Sep 23, 2027 | 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 | Sep 23, 2027 | High confidence |
This family
| US 7,844,686 | this patent Sep 2027 | Sep 2027 |
| US 8,745,171 | Lapsed on the fee record Jun 2026 | Jun 2026 |
| US 9,645,900 | Lapsed on the fee record May 2025 | May 2025 |
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 |
|---|---|---|---|
| Dec 21, 2006 Reel 18736, frame 649 | Keith, Robert O., JR. | Maxsp Corporation | Assignment of Assignor's Interest |
| Jul 21, 2015 Reel 36148, frame 889 | New Checkerboard Cattle and Computer Corporation | Maxsp Corporation | Change of Name |
| Jul 21, 2015 Reel 36163, frame 82 | Maxsp Corporation | Goodrich, John B. | Nunc Pro Tunc Confirmatory Assignment with an Effective Date of 7/1/2008 Which Confirms the Agreement of Sale Executed on 7/1/2008 from Maxsp Corporation to John B. Goodrich |
| Jul 21, 2015 Reel 36163, frame 287 | Goodrich, John B. | New Checkerboard Cattle and Computer Corporation | Nunc Pro Tunc Confirmatory Assignment with an Effective Date of 7/1/2008 Which Confirms the Bill of Sale Executed on 9/12/2008 from John B. Goodrich to New Checkerboard Cattle and Computer Corporation |
| Jul 23, 2015 Reel 36168, frame 302 | Maxsp Corporation | Microsoft Technology Licensing, LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Sep 2027
Term ends Sep 23, 2027. No further fees fall due before then
Note
The 276 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
23
later US patents cite this one
That is above the median of utility patents granted in 2010 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.