Also listed on Zogenix, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Aug 2, 2037 · Medium confidence
20-year base term ends Aug 24, 2036
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 11,406,606), so the cap could be lower.
Held by Zogenix International Limited
Filed May 1, 2020 as application 16/864,955 · Granted Sep 15, 2026
Base term plus 423 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2016
2037
Clock starts
Aug 24, 2016
Aug 24, 2016
Term ends
Aug 2, 2037
Aug 2, 2037
Granted
Sep 15, 2026
Sep 15, 2026
base term
patent term adjustment
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
423
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 10,960,331, US 11,406,606, US 11,759,440, US 11,786,487.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 423 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 2 maintenance fees are 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 24, 2016, when application 15/246,346, the earliest non-provisional in its chain, was filed (this one was filed May 1, 2020) | Aug 24, 2036 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +423 days, USPTO patent term adjustment record | Oct 21, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,960,331, US 11,406,606, US 11,759,440, US 11,786,487) | capped to Aug 2, 2037 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 2, 2037 | Medium confidence |
This family
| Application 15/246,346 | Abandoned not computed | not computed |
| US 12,734,137 | this patent Aug 2037 | Aug 2037 |
| Application 18/418,133 | Pending not computed | not computed |
| Application 18/418,121 | 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 |
|---|---|---|---|
| May 4, 2020 Reel 52558, frame 971 | Farr, Stephen J.; Galer, Bradley Stuart | Zogenix International Limited | Assignment of Assignor's Interest |
| Apr 17, 2025 Reel 70872, frame 741 | Farr, Stephen J.; Galer, Bradley Stuart | Zogenix International Limited | Assignment of Assignor's 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 2, 2037. Maintenance fees still fall due before then
Note
The 423 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 10,960,331, US 11,406,606, US 11,759,440, US 11,786,487.
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.