Also listed on Forerunner Pharma Research Co., Ltd., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jan 28, 2031 · High confidence
20-year base term ends Jan 28, 2031
Held by Chugai Seiyaku Kabushiki Kaisha
Filed Sep 12, 2012 as application 13/575,861 · Granted Sep 8, 2015
Base term, 20 years from filing
Today
2011
2031
Clock starts
Jan 28, 2011
Jan 28, 2011
Term ends
Jan 28, 2031
Jan 28, 2031
Granted
Sep 8, 2015
Sep 8, 2015
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
6
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. 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 Jan 28, 2011, when application PCT/JP2011/000485, the earliest non-provisional in its chain, was filed (this one was filed Sep 12, 2012) | Jan 28, 2031 | 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 | 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 | Jan 28, 2031 | High confidence |
This family
| US 9,127,071 | this patent Jan 2031 | Jan 2031 |
| US 11,111,311 | In force Jan 2031 | Jan 2031 |
| Application 17/406,504 | Abandoned not computed | not computed |
| Application 18/782,248 | Abandoned not computed | not computed |
| Application 19/077,985 | Pending not computed | not computed |
5 of 6 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 13, 2012 reel/frame not recorded | Yoshida, Kenji; Aburatani, Hiroyuki; Ishikawa, Shumpei | Forerunner Pharma Research Co., Ltd. | Assignment of Assignor's Interest |
| Sep 13, 2012 reel/frame not recorded | Yoshida, Kenji; Aburatani, Hiroyuki; Ishikawa, Shumpei | The University of Tokyo | Assignment of Assignor's Interest |
| Sep 13, 2012 Reel 28951, frame 451 | Yoshida, Kenji; Aburatani, Hiroyuki; Ishikawa, Shumpei | Forerunner Pharma Research Co., Ltd.; The University of Tokyo | Assignment of Assignor's Interest |
| Aug 15, 2013 Reel 31014, frame 630 | Forerunner Pharma Research Co., Ltd. | Chugai Seiyaku Kabushiki Kaisha | 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
Jan 2031
Term ends Jan 28, 2031. Maintenance fees still fall due before then
Citations
89
later US patents cite this one
That is top 5% 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.