Term ends Dec 22, 2028 · High confidence
20-year base term ends Aug 11, 2028
Held by Brother Kogyo Kabushiki Kaisha
Filed Aug 11, 2008 as application 12/189,758 · Granted Mar 1, 2011
Base term plus 133 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
Aug 11, 2008
Aug 11, 2008
Term ends
Dec 22, 2028
Dec 22, 2028
Granted
Mar 1, 2011
Mar 1, 2011
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
133
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.
235
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 133 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 Aug 11, 2008, when this application, 12/189,758, was filed | Aug 11, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +133 days, USPTO patent term adjustment record | Dec 22, 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 | Dec 22, 2028 | High confidence |
This family
| US 8,335,842 | In force Sep 2027 | Sep 2027 |
| US 8,635,350 | In force Jun 2030 | Jun 2030 |
| US 7,711,796 | In force Mar 2028 | Mar 2028 |
| US 10,142,392 | In force no later than Jan 2028 | no later than Jan 2028 |
| US 7,911,341 | In force Oct 2028 | Oct 2028 |
| Application 12/189,780 | Abandoned not computed | not computed |
| US 8,473,619 | Term ended no later than Mar 2025 | no later than Mar 2025 |
| US 7,896,458 | this patent Dec 2028 | Dec 2028 |
8 of 235 applications in this family shown, earliest filings first. 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 11, 2008 Reel 21369, frame 736 | Ito, Koji | Brother Kogyo Kabushiki Kaisha | 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
Dec 2028
Term ends Dec 22, 2028. No further fees fall due before then
Note
The 133 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2011 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.