Collateral for a security interest recorded May 10, 2024 (JPMorgan Chase Bank, N.A.).
Term ends Jun 28, 2029 · High confidence
20-year base term ends Oct 6, 2028
Held by Alcoa USA Corp.
Filed Oct 6, 2008 as application 12/245,951 · Granted Nov 15, 2011
Base term plus 265 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Oct 6, 2008
Oct 6, 2008
Term ends
Jun 28, 2029
Jun 28, 2029
Granted
Nov 15, 2011
Nov 15, 2011
base term
patent term adjustment
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
265
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.
4
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 265 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 Oct 6, 2008, when this application, 12/245,951, was filed | Oct 6, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +265 days, USPTO patent term adjustment record | Jun 28, 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 | Jun 28, 2029 | High confidence |
This family
| US 8,056,611 | this patent Jun 2029 | Jun 2029 |
| Application PCT/US2009/059627 | PCT application no patent term | no patent term |
| Application 12/994,843 | Abandoned not computed | not computed |
| US 8,561,670 | Lapsed on the fee record Oct 2021 | Oct 2021 |
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 17, 2008 Reel 21993, frame 154 | Gildemeister, David R.; Kirby, James L.; Richter, Ray T.; Shanko, Charles W. | Alcoa Inc. | Assignment of Assignor's Interest |
| Nov 3, 2016 Reel 40556, frame 141 | Alcoa Inc. | Alcoa USA Corp. | Assignment of Assignor's Interest |
| Jan 27, 2017 Reel 41521, frame 521 | Alcoa USA Corp. | JPMorgan Chase Bank, N.A., as Administrative Agent | Security Interest |
| Sep 28, 2022 Reel 61558, frame 257 | Jpmorgan Chase Bank, N.a. | Alcoa USA Corp. | Release of Security Interest |
| May 10, 2024 Reel 67376, frame 263 | Alcoa USA Corp. | JPMorgan Chase Bank, N.A., as Administrative Agent | Security Interest |
| May 10, 2024 Reel 67380, frame 803 | Alcoa USA Corp. | Sumitomo Mitsui Banking Corporation | Patent Security Agreement |
| Apr 24, 2026 Reel 75481, frame 646 | Sumitomo Mitsui Banking Corporation | Alcoa Canada Co.; Alcoa USA Corp. | Release of Security Interest |
| Apr 24, 2026 reel/frame not recorded | Sumitomo Mitsui Banking Corporation | Alcoa Canada Co. | Release of Security Interest |
| Apr 24, 2026 reel/frame not recorded | Sumitomo Mitsui Banking Corporation | Alcoa USA Corp. | Release of Security 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
Jun 2029
Term ends Jun 28, 2029. No further fees fall due before then
Note
The 265 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is above 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.