Term ends no later than Aug 2, 2037 · Medium confidence
20-year base term ends Aug 2, 2037
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Aug 2, 2017
Aug 2, 2037
Aug 9, 2022
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 1 of 3 maintenance fees is paid so far. Confidence: Medium. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 2, 2017, when application 15/667,112, the earliest non-provisional in its chain, was filed (this one was filed Jan 7, 2022) | Aug 2, 2037 | 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 | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Aug 2, 2037 | Medium confidence |
This family
| Application 15/667,112 | Abandoned not computed | not computed |
| US 10,603,290 | In force no later than Aug 2037 | no later than Aug 2037 |
| US 11,040,018 | In force Aug 2037 | Aug 2037 |
| US 11,786,487 | In force Aug 2037 | Aug 2037 |
| US 11,759,440 | In force Aug 2037 | Aug 2037 |
| US 11,406,606 | this patent no later than Aug 2037 | no later than Aug 2037 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Jan 10, 2022 Reel 58609, frame 28 | Farr, Stephen J.; Boyd, Brooks | Zogenix International Limited | Assignment of Assignor's Interest |
| Jun 6, 2025 Reel 71529, frame 331 | Farr, Stephen J.; Boyd, Brooks | Zogenix International Limited | Corrective Assignment to Correct the Receiving Party Data Previously Recorded at Reel: 58609 Frame: 28. Assignor(S) Hereby Confirms the Assignment. |
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.
What's changing
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Aug 2, 2037. We will not guess the cap.