Also listed on Astex Pharmaceuticals, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 12, 2027 · High confidence
20-year base term ends Nov 6, 2027
Held by Sumitomo Pharma America, Inc.
Filed Nov 6, 2007 as application 11/935,959 · Granted Jul 6, 2010
Base term plus 36 days of patent term adjustment (USPTO delay)
Today
2007
2027
Clock starts
Nov 6, 2007
Nov 6, 2007
Term ends
Dec 12, 2027
Dec 12, 2027
Granted
Jul 6, 2010
Jul 6, 2010
base term
patent term adjustment
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
36
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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 36 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Nov 6, 2007, when this application, 11/935,959, was filed | Nov 6, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +36 days, USPTO patent term adjustment record | Dec 12, 2027 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 12, 2027 | High confidence |
This family
| US 7,750,007 | this patent Dec 2027 | Dec 2027 |
| Application 12/785,322 | Abandoned not computed | not computed |
| US 8,710,057 | In force Nov 2027 | Nov 2027 |
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 |
|---|---|---|---|
| Mar 28, 2008 Reel 20721, frame 348 | Bearss, David J.; Liu, Xiao-hui; Vankayalapati, Hariprasad; Xu, Yong | Supergen, Inc. | Assignment of Assignor's Interest |
| Feb 22, 2012 Reel 27747, frame 334 | Supergen, Inc. | Astex Pharmaceuticals. Inc. | Merger/Name Change |
| Jul 26, 2012 Reel 28650, frame 717 | Astex Pharmaceuticals, Inc. | Tolero Pharmaceuticals, Inc. | Assignment of Assignor's Interest |
| Nov 17, 2016 Reel 40362, frame 884 | Tolero Pharmaceuticals, Inc. | Sumitomo Dainippon Pharma Co., Ltd. | Security Interest |
| Jul 10, 2020 Reel 53172, frame 940 | Tolero Pharmaceuticals, Inc. | Boston Biomedical, Inc. | Merger |
| Jul 10, 2020 Reel 53184, frame 718 | Boston Biomedical, Inc. | Sumitomo Dainippon Pharma Oncology, Inc. | Change of Name |
| Apr 25, 2022 Reel 59787, frame 758 | Sumitomo Dainippon Pharma Oncology, Inc. | Sumitomo Pharma Oncology, Inc. | Change of Name |
| Sep 18, 2024 Reel 68618, frame 375 | Sumitomo Pharma Oncology, Inc. | Sumitomo Pharma America, Inc. | 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.
What's changing
Dec 2027
Term ends Dec 12, 2027. No further fees fall due before then
Note
The 36 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
86
later US patents cite this one
That is top 10% of utility patents granted in 2010 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.