Also listed on Quantum Biosystems Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Sep 17, 2034 · Medium confidence
20-year base term ends Sep 17, 2034
Why Medium: A parent in the chain could not be resolved.
Held by Osaka University
Filed Mar 2, 2017 as application 15/448,317 · Granted Feb 11, 2020
Base term plus 59 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2014
2034
Clock starts
Sep 17, 2014
Sep 17, 2014
Term ends
Sep 17, 2034
Sep 17, 2034
Granted
Feb 11, 2020
Feb 11, 2020
base term
fee events
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
59
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 9,644,236.
1 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.
3
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 59 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 3 maintenance fees is 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 17, 2014, when application PCT/US2014/056173, the earliest non-provisional in its chain, was filed (this one was filed Mar 2, 2017); a parent in its chain could not be resolved (the next row) | Sep 17, 2034 | 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 | +59 days, USPTO patent term adjustment record | Nov 15, 2034 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,644,236) | capped to Sep 17, 2034 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 17, 2034 | Medium confidence |
This family
| US 9,644,236 | In force Sep 2034 | Sep 2034 |
| US 10,557,167 | this patent Sep 2034 | Sep 2034 |
2 of 3 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 27, 2017 Reel 43966, frame 895 | Kawai, Tomoji; Taniguchi, Masateru; Ohshiro, Takahito | Osaka University | Assignment of Assignor's Interest |
| Oct 27, 2017 Reel 43966, frame 901 | Oldham, Mark; Nordman, Eric | Quantum Biosystems Inc. | Assignment of Assignor's Interest |
| Oct 27, 2017 Reel 43966, frame 915 | Osaka University | Quantum Biosystems Inc. | Assignment of Assignor's Interest |
| Oct 28, 2020 Reel 54193, frame 744 | Quantum Biosystems Inc. | Osaka University | Assignment of Assignor's Interest |
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 2034
Term ends Sep 17, 2034. Maintenance fees still fall due before then
Note
The 59 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 9,644,236.
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2020 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.