Collateral for a security interest recorded Jun 22, 2020 (Oaktree Fund Administration, LLC).
Lapsed Jan 26, 2025 on the fee record · High confidence
20-year base term ends Mar 15, 2038
First maintenance fee unpaid; grace period ended.
Held by Athenex, Inc.
Filed Sep 11, 2019 as application 16/567,300 · Granted Jan 26, 2021
Base term, 20 years from filing
Today
Lapsed Jan 26, 2025
2018
2038
Clock starts
Mar 15, 2018
Mar 15, 2018
No longer in force
Jan 26, 2025
Jan 26, 2025
Granted
Jan 26, 2021
Jan 26, 2021
Term would have run to
Mar 15, 2038
Mar 15, 2038
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
3
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 Mar 15, 2038: its 20-year base term, with no adjustment for prosecution delay. 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 Mar 15, 2018, when application 15/921,890, the earliest non-provisional in its chain, was filed (this one was filed Sep 11, 2019) | Mar 15, 2038 | 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 | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Jan 26, 2025 | High confidence |
| Computed term end | The steps above, in order | Jan 26, 2025 | High confidence |
This family
| US 10,450,303 | In force Mar 2038 | Mar 2038 |
| US 10,899,747 | this patent Jan 2025 | Jan 2025 |
| Application 17/114,699 | Abandoned 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 |
|---|---|---|---|
| Sep 11, 2019 Reel 50343, frame 479 | Smolinski, Michael P.; Urgaonkar, Sameer; Clements, James Lindsay; Hangauer, David G., JR. | Athenex, Inc. | Assignment of Assignor's Interest |
| Jun 22, 2020 Reel 53005, frame 657 | Athenex, Inc. | Oaktree Fund Administration, LLC | 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.
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Alerts on its grants, lapses and transfers.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2021 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.