Term ends Sep 11, 2040 · Medium confidence
20-year base term ends Sep 11, 2040
Held by Halozyme Hypercon, Inc.
Filed Aug 8, 2022 as application 17/883,427 · Granted Apr 14, 2026
Base term plus 397 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2020
2040
Clock starts
Sep 11, 2020
Sep 11, 2020
Term ends
Sep 11, 2040
Sep 11, 2040
Granted
Apr 14, 2026
Apr 14, 2026
base term
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
397
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 11,459,376.
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.
5
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 397 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 3 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 Sep 11, 2020, when application PCT/US2020/050508, the earliest non-provisional in its chain, was filed (this one was filed Aug 8, 2022); a parent in its chain could not be resolved (the next row) | Sep 11, 2040 | 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 | +397 days, USPTO patent term adjustment record | Oct 13, 2041 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,459,376) | capped to Sep 11, 2040 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 11, 2040 | Medium confidence |
This family
| US 11,459,376 | In force no later than Sep 2040 | no later than Sep 2040 |
| US 12,600,763 | this patent Sep 2040 | Sep 2040 |
| Application 18/906,489 | Pending not computed | not computed |
| Application 19/549,897 | Pending not computed | not computed |
4 of 5 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Aug 26, 2022 Reel 60910, frame 245 | Brown, Paul; Carter, Tyler L.; Charles, Lyndon Fitzgerald, JR.; Coffman, Chase Spenser; Dadon, Daniel Benjamin; Liu, Lisa; Shadbar, Sadiqua; Sudrik, Chaitanya; Tang, Yi; Vartak, Shankul | Elektrofi, Inc. | Assignment of Assignor's Interest |
| Feb 2, 2026 Reel 73662, frame 717 | Elektrofi, Inc. | Halozyme Hypercon, Inc. | Change of Name |
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.
What's changing
Sep 2040
Term ends Sep 11, 2040. Maintenance fees still fall due before then
Note
The 397 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 11,459,376.
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.