Collateral for a security interest recorded May 10, 2024 (JPMorgan Chase Bank, N.A.).
Term ends Jul 5, 2037 · Medium confidence
20-year base term ends Aug 11, 2036
Why Medium: A parent in the chain could not be resolved.
Held by Alcoa USA Corp.
Filed Feb 13, 2018 as application 15/895,497 · Granted Feb 21, 2023
Base term plus 328 days of patent term adjustment (USPTO delay)
Today
2016
2037
Clock starts
Aug 11, 2016
Aug 11, 2016
Term ends
Jul 5, 2037
Jul 5, 2037
Granted
Feb 21, 2023
Feb 21, 2023
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
328
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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 328 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. Confidence: Medium. 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, 2016, when application PCT/US2016/046613, the earliest non-provisional in its chain, was filed (this one was filed Feb 13, 2018); a parent in its chain could not be resolved (the next row) | Aug 11, 2036 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +328 days, USPTO patent term adjustment record | Jul 5, 2037 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 5, 2037 | Medium confidence |
This family
| Application PCT/US2016/046613 | PCT application no patent term | no patent term |
| US 11,584,977 | this patent Jul 2037 | Jul 2037 |
| US 11,498,773 | In force Aug 2036 | Aug 2036 |
| Application 17/967,708 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Feb 13, 2018 Reel 44914, frame 105 | Lin, Jen C.; Yan, Xinyan | Alcoa Inc. | Assignment of Assignor's Interest |
| Feb 13, 2018 Reel 44914, frame 496 | Alcoa Inc. | Alcoa USA Corp. | Assignment of Assignor's 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
Jul 2037
Term ends Jul 5, 2037. Maintenance fees still fall due before then
Note
The 328 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 top 25% of utility patents granted in 2023 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.