Also listed on Forerunner Pharma Research Co., Ltd., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 29, 2030 · High confidence
20-year base term ends Dec 25, 2029
Held by Chugai Seiyaku Kabushiki Kaisha
Filed Sep 9, 2011 as application 13/138,014 · Granted Sep 22, 2015
Base term plus 125 days of patent term adjustment (USPTO delay)
Today
2009
2030
Clock starts
Dec 25, 2009
Dec 25, 2009
Term ends
Apr 29, 2030
Apr 29, 2030
Granted
Sep 22, 2015
Sep 22, 2015
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
125
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
2
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 125 days past its 20-year base term on prosecution delay. 2 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 Dec 25, 2009, when application PCT/JP2009/007237, the earliest non-provisional in its chain, was filed (this one was filed Sep 9, 2011) | Dec 25, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +125 days, USPTO patent term adjustment record | Apr 29, 2030 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 29, 2030 | High confidence |
This family
| US 9,139,647 | this patent Apr 2030 | Apr 2030 |
1 of 2 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 |
|---|---|---|---|
| Sep 9, 2011 Reel 26879, frame 942 | Aburatani, Hiroyuki; Ishikawa, Shunpei; Kawai, Shigeto | The University of Tokyo; Forerunner Pharma Research Co., Ltd. | Assignment of Assignor's Interest |
| Sep 9, 2011 reel/frame not recorded | Kawai, Shigeto; Aburatani, Hiroyuki; Ishikawa, Shunpei | The University of Tokyo | Assignment of Assignor's Interest |
| Sep 9, 2011 reel/frame not recorded | Kawai, Shigeto; Aburatani, Hiroyuki; Ishikawa, Shunpei | Forerunner Pharma Research Co., Ltd. | Assignment of Assignor's Interest |
| Jul 14, 2016 Reel 39160, frame 20 | Forerunner Pharma Research Co., Ltd. | Chugai Seiyaku Kabushiki Kaisha | Assignment of Assignor's Interest |
| Aug 29, 2016 Reel 39851, frame 265 | Forerunner Pharma Research Co., Ltd. | Forerunner Pharma Research Co., Ltd. | Change of Address |
| Nov 11, 2016 Reel 41479, frame 753 | Forerunner Pharma Research Co., Ltd. | Forerunner Pharma Research Co., Ltd. | Corrective Assignment to Correct the Receiving Party Data Previously Recorded at Reel: 039851 Frame: 0265. Assignor(S) Hereby Confirms the Change of Address. |
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
Apr 2030
Term ends Apr 29, 2030. Maintenance fees still fall due before then
Note
The 125 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
12
later US patents cite this one
That is above the median of utility patents granted in 2015 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.