Term ends Aug 11, 2042 · Low confidence
20-year base term ends Aug 11, 2042
Held by Kuleon LLC
Filed Dec 8, 2025 as application 19/412,382 · Granted Jun 30, 2026
Base term, 20 years from filing
Today
2022
2042
Clock starts
Aug 11, 2022
Aug 11, 2022
Term ends
Aug 11, 2042
Aug 11, 2042
Granted
Jun 30, 2026
Jun 30, 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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 12,012,380, to Aug 11, 2042. 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.
9
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 Aug 11, 2022, when application PCT/US2022/040048, the earliest non-provisional in its chain, was filed (this one was filed Dec 8, 2025); a parent in its chain could not be resolved (the next row) | Aug 11, 2042 | 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 12,012,380) | resolves to Aug 11, 2042, no earlier than this term, so no change | 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 | Aug 11, 2042 | Low confidence |
This family
| Application PCT/US2022/040048 | PCT application no patent term | no patent term |
| US 11,780,807 | In force Aug 2042 | Aug 2042 |
| US 12,187,678 | In force no later than Aug 2042 | no later than Aug 2042 |
| US 12,012,380 | In force no later than Aug 2042 | no later than Aug 2042 |
| US 12,275,701 | In force no later than Aug 2042 | no later than Aug 2042 |
| US 12,344,582 | In force Aug 2042 | Aug 2042 |
| Application 19/174,214 | Pending not computed | not computed |
| US 12,441,683 | In force Aug 2042 | Aug 2042 |
8 of 9 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
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 2042
Term ends Aug 11, 2042. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 12,012,380, ends no earlier than this term, so it caps nothing.
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.