Term ends no later than Dec 10, 2034 · Medium confidence
20-year base term ends Dec 10, 2034
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.
Held by Tosoh Bioscience LLC
Filed May 11, 2023 as application 18/196,321 · Granted Oct 29, 2024
Base term, 20 years from filing
Today
2014
2034
Clock starts
Dec 10, 2014
Dec 10, 2014
Ends no later than
Dec 10, 2034
Dec 10, 2034
Granted
Oct 29, 2024
Oct 29, 2024
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
10
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 on file with no resolved reference, so no cap is applied and none is guessed. 0 of 2 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 Dec 10, 2014, when application PCT/US2014/069580, the earliest non-provisional in its chain, was filed (this one was filed May 11, 2023) | Dec 10, 2034 | 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 | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Dec 10, 2034 | Medium confidence |
This family
| US 10,393,276 | In force Dec 2034 | Dec 2034 |
| US 10,451,188 | In force no later than Apr 2035 | no later than Apr 2035 |
| US 11,054,045 | In force Dec 2034 | Dec 2034 |
| US 11,174,952 | In force Dec 2034 | Dec 2034 |
| US 11,703,133 | In force Dec 2034 | Dec 2034 |
| US 11,773,989 | In force Dec 2034 | Dec 2034 |
| US 12,129,935 | this patent no later than Dec 2034 | no later than Dec 2034 |
| US 12,264,756 | In force Dec 2034 | Dec 2034 |
8 of 10 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 |
|---|---|---|---|
| May 11, 2023 Reel 63618, frame 28 | Mierendorf, Robert Charles; Harbrecht, Brian A.; Manke, Scott G. | Semba Biosciences, Inc. | Assignment of Assignor's Interest |
| May 11, 2023 Reel 63630, frame 835 | Semba Biosciences, Inc. | Tosoh Bioscience Wisconsin, Inc. | Change of Name |
| May 11, 2023 Reel 63618, frame 160 | Tosoh Bioscience Wisconsin, Inc. | Tosoh Bioscience LLC | Merger |
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
Dec 2034
Term ends no later than Dec 10, 2034. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Dec 10, 2034. We will not guess the cap.
Citations
1
later US patent cites 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.