Lapsed Feb 27, 2026 on the fee record · High confidence
20-year base term ended May 24, 2026
Second maintenance fee unpaid; grace period ended.
Filed Oct 22, 2014 as application 14/521,165 · Granted Feb 27, 2018
Base term, 20 years from filing
Today
Lapsed Feb 27, 2026
2006
2026
Clock starts
May 24, 2006
May 24, 2006
No longer in force
Feb 27, 2026
Feb 27, 2026
Granted
Feb 27, 2018
Feb 27, 2018
Term would have run to
May 24, 2026
May 24, 2026
base term
after the term ends
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 8,898,319, to May 24, 2026. The term already ends on or before that date, so the cap shortened nothing.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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.
Its term would have run to May 24, 2026: 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. 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 May 24, 2006, when application 11/440,505, the earliest non-provisional in its chain, was filed (this one was filed Oct 22, 2014) | May 24, 2026 | 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 8,898,319) | resolves to May 24, 2026, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | lapsed Feb 27, 2026 | High confidence |
| Computed term end | The steps above, in order | Feb 27, 2026 | High confidence |
This family
| US 8,898,319 | In force Sep 2027 | Sep 2027 |
| US 9,906,418 | this patent Feb 2026 | Feb 2026 |
| US 9,893,961 | Lapsed on the fee record Feb 2026 | Feb 2026 |
| US 10,511,495 | Term ended May 2026 | May 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 |
|---|---|---|---|
| Oct 22, 2014 Reel 34009, frame 598 | 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,898,319, ends no earlier than this term, so it caps nothing.
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2018 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.