Also listed on Maxsp Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 26, 2027 · High confidence
20-year base term ends Oct 26, 2027
Filed Oct 4, 2012 as application 13/645,262 · Granted Mar 10, 2015
Base term, 20 years from filing
Today
2007
2027
Clock starts
Oct 26, 2007
Oct 26, 2007
Term ends
Oct 26, 2027
Oct 26, 2027
Granted
Mar 10, 2015
Mar 10, 2015
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,307,239, to Oct 26, 2027. The term already ends on or before that date, so the cap shortened nothing.
2 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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 3 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 Oct 26, 2007, when application 11/977,983, the earliest non-provisional in its chain, was filed (this one was filed Oct 4, 2012) | Oct 26, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,307,239) | resolves to Oct 26, 2027, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 26, 2027 | High confidence |
This family
| US 8,307,239 | In force Sep 2028 | Sep 2028 |
| US 8,977,887 | this patent Oct 2027 | Oct 2027 |
| US 9,501,374 | In force Oct 2027 | Oct 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 |
|---|---|---|---|
| Oct 4, 2012 Reel 29079, frame 803 | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Oct 2027
Term ends Oct 26, 2027.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,307,239, ends no earlier than this term, so it caps nothing.
Citations
21
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.