Term ends Mar 10, 2035 · High confidence
20-year base term ends Jan 23, 2035
Held by Noster Inc.
Filed Feb 12, 2021 as application 17/175,186 · Granted Dec 9, 2025
Base term plus 46 days of patent term adjustment (USPTO delay)
Today
2015
2035
Clock starts
Jan 23, 2015
Jan 23, 2015
Term ends
Mar 10, 2035
Mar 10, 2035
Granted
Dec 9, 2025
Dec 9, 2025
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
46
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
4
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 46 days past its 20-year base term on prosecution delay. 0 of 2 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 Jan 23, 2015, when application PCT/JP2015/051843, the earliest non-provisional in its chain, was filed (this one was filed Feb 12, 2021) | Jan 23, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +46 days, USPTO patent term adjustment record | Mar 10, 2035 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High 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 | Mar 10, 2035 | High confidence |
This family
| US 10,548,868 | In force no later than Aug 2035 | no later than Aug 2035 |
| US 10,952,983 | In force Jan 2035 | Jan 2035 |
| US 12,491,173 | this patent Mar 2035 | Mar 2035 |
3 of 4 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 |
|---|---|---|---|
| Apr 14, 2021 Reel 55920, frame 263 | Nitto Pharmaceutical Industries, Ltd. | Noster Inc. | Assignment of Assignor's Interest |
| Oct 9, 2024 Reel 68851, frame 663 | Kyoto University | Noster Inc. | Assignment of Assignor's Interest |
| Oct 18, 2024 reel/frame not recorded | Ogawa, Jun; Goto, Tsuyoshi; Kishino, Shigenobu; Takahashi, Nobuyuki; Yonejima, Yasunori; Kawada, Teruo | Kyoto University | Assignment of Assignor's Interest |
| Oct 18, 2024 reel/frame not recorded | Ogawa, Jun; Goto, Tsuyoshi; Kishino, Shigenobu; Takahashi, Nobuyuki; Yonejima, Yasunori; Kawada, Teruo | Nitto Pharmaceutical Industries, Ltd. | Assignment of Assignor's Interest |
| Oct 18, 2024 Reel 69207, frame 122 | Kyoto University | Noster Inc. | Corrective Assignment to Correct the the Property Type from Application Number to Patent Number for 10952983 and 10975397 Previously Recorded at Reel: 68851 Frame: 663. Assignor(S) Hereby Confirms the Assignment. |
| Oct 18, 2024 Reel 68942, frame 231 | Ogawa, Jun; Kishino, Shigenobu; Kawada, Teruo; Takahashi, Nobuyuki; Goto, Tsuyoshi; Yonejima, Yasunori | Kyoto University; Nitto Pharmaceutical Industries, Ltd. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Mar 2035
Term ends Mar 10, 2035. Maintenance fees still fall due before then
Note
The 46 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2025 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.