Term ends Jan 30, 2040 · Low confidence
20-year base term ends Jan 30, 2040
Held by Halozyme Hypercon, Inc.
Filed Jun 18, 2021 as application 17/351,937 · Granted Aug 8, 2023
Base term, 20 years from filing
Today
2020
2040
Clock starts
Jan 30, 2020
Jan 30, 2020
Term ends
Jan 30, 2040
Jan 30, 2040
Granted
Aug 8, 2023
Aug 8, 2023
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 12,377,050, US 12,600,763, to Jan 30, 2040. The term already ends on or before that date, so the cap shortened nothing.
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.
6
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 3 maintenance fees are paid so far. Confidence: Low. 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 Jan 30, 2020, when application PCT/US2020/015957, the earliest non-provisional in its chain, was filed (this one was filed Jun 18, 2021); a parent in its chain could not be resolved (the next row) | Jan 30, 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 | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 12,377,050, US 12,600,763) | resolves to Jan 30, 2040, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: PCTUS2020015957 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Jan 30, 2040 | Low confidence |
This family
| US 11,717,488 | this patent Jan 2040 | Jan 2040 |
| Application 18/344,142 | Pending not computed | not computed |
| US 12,558,323 | In force Jan 2040 | Jan 2040 |
| Application 18/907,018 | Pending not computed | not computed |
| Application 19/453,546 | Pending not computed | not computed |
5 of 6 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 |
|---|---|---|---|
| Jul 22, 2021 Reel 56949, frame 493 | Brown, Paul; Charles, Lyndon Fitzgerald, JR.; Coffman, Chase Spenser; Dadon, Daniel Benjamin; Ivey, James; Liu, Lisa; Sudrik, Chaitanya | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jan 2040
Term ends Jan 30, 2040. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 12,377,050, US 12,600,763, ends no earlier than this term, so it caps nothing.
Citations
11
later US patents cite this one
That is top 10% of utility patents granted in 2023 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.