Term ends Aug 20, 2029 · High confidence
20-year base term ends Aug 29, 2028
Held by Allen-Vanguard Corporation
Filed Sep 20, 2010 as application 12/675,482 · Granted Mar 19, 2013
Base term plus 356 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Aug 29, 2008
Aug 29, 2008
Term ends
Aug 20, 2029
Aug 20, 2029
Granted
Mar 19, 2013
Mar 19, 2013
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
356
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.
23
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 356 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 29, 2008, when application PCT/CA2008/001539, the earliest non-provisional in its chain, was filed (this one was filed Sep 20, 2010) | Aug 29, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +356 days, USPTO patent term adjustment record | Aug 20, 2029 | 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 | Aug 20, 2029 | High confidence |
This family
| US 7,841,026 | In force Mar 2028 | Mar 2028 |
| US 7,874,166 | Lapsed on the fee record Jan 2015 | Jan 2015 |
| US 8,347,422 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 8,622,144 | Lapsed on the fee record Jan 2018 | Jan 2018 |
| Application 12/300,575 | Abandoned not computed | not computed |
| US D629,568 | Term ended Dec 2024 | Dec 2024 |
| US 7,992,421 | In force Dec 2028 | Dec 2028 |
| US 8,400,367 | this patent Aug 2029 | Aug 2029 |
8 of 23 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 |
|---|---|---|---|
| Sep 20, 2010 Reel 25014, frame 304 | Bongfeldt, David Charles; Yensen, Trevor Noel | Allen-Vanguard Technologies Inc. | Assignment of Assignor's Interest |
| Mar 14, 2011 Reel 25948, frame 81 | Allen-Vanguard Technologies Inc. | Allen-Vanguard Corporation | Articles of Amalgamation |
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
Aug 2029
Term ends Aug 20, 2029. No further fees fall due before then
Note
The 356 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 2013 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.