Collateral for a security interest recorded Jun 22, 2020 (Oaktree Fund Administration, LLC).
Term ends Aug 14, 2037 · High confidence
20-year base term ends Aug 14, 2037
Held by Athenex, Inc.
Filed Aug 14, 2017 as application 15/676,203 · Granted Feb 26, 2019
Base term plus 37 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2017
2037
Clock starts
Aug 14, 2017
Aug 14, 2017
Term ends
Aug 14, 2037
Aug 14, 2037
Granted
Feb 26, 2019
Feb 26, 2019
base term
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
37
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 10,973,828.
2 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.
This patent's term runs 37 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 2 of 3 maintenance fees are paid so far. 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 14, 2017, when this application, 15/676,203, was filed | Aug 14, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +37 days, USPTO patent term adjustment record | Sep 20, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,973,828) | capped to Aug 14, 2037 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 14, 2037 | High confidence |
This family
| US 10,213,435 | this patent Aug 2037 | Aug 2037 |
| US 10,973,828 | In force Aug 2037 | Aug 2037 |
| Application 17/187,980 | 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 |
|---|---|---|---|
| Nov 14, 2017 Reel 44118, frame 748 | Smolinski, Michael P.; Nasief Abdel Sayed, Nader N.; Hangauer, David G., JR. | Athenex, Inc. | Assignment of Assignor's Interest |
| Jul 3, 2018 Reel 47247, frame 812 | Athenex, Inc. | Perceptive Credit Holdings II, LP | Patent Security Agreement |
| Jun 19, 2020 Reel 52990, frame 677 | Perceptive Credit Holdings II, LP | Athenex, Inc. | Release of Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Aug 2037
Term ends Aug 14, 2037. Maintenance fees still fall due before then
Note
The 37 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 10,973,828.
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2019 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.