Term ends Jan 16, 2038 · High confidence
20-year base term ends Nov 22, 2037
Held by Halozyme Hypercon, Inc.
Filed Apr 18, 2023 as application 18/136,012 · Granted Dec 31, 2024
Base term plus 55 days of patent term adjustment (USPTO delay)
Today
2017
2038
Clock starts
Nov 22, 2017
Nov 22, 2017
Term ends
Jan 16, 2038
Jan 16, 2038
Granted
Dec 31, 2024
Dec 31, 2024
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
55
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,654,112, to Jan 16, 2038. 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.
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 55 days past its 20-year base term on 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: 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 Nov 22, 2017, when application PCT/US2017/063150, the earliest non-provisional in its chain, was filed (this one was filed Apr 18, 2023) | Nov 22, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +55 days, USPTO patent term adjustment record | Jan 16, 2038 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,654,112) | resolves to Jan 16, 2038, 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 |
| Computed term end | The steps above, in order | Jan 16, 2038 | High confidence |
This family
| US 11,654,112 | In force Sep 2040 | Sep 2040 |
| US 12,178,913 | this patent Jan 2038 | Jan 2038 |
| US 12,569,445 | In force Nov 2037 | Nov 2037 |
| Application 19/535,043 | 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 |
|---|---|---|---|
| Oct 19, 2023 Reel 65281, frame 427 | Coffman, Chase; Charles, Lyndon Fitzgerald, JR.; Brown, Paul; Dadon, Daniel Benjamin; Liu, Lisa; Robinson, Cory | 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 2038
Term ends Jan 16, 2038. Maintenance fees still fall due before then
Note
The 55 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,654,112, ends no earlier than this term, so it caps nothing.
Citations
6
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.