Term ended Nov 14, 2026 · High confidence
20-year base term ended Nov 14, 2026
Held by Cellmid Limited
Filed Sep 10, 2009 as application 12/084,907 · Granted Mar 6, 2012
Base term, 20 years from filing
Today
Term ended Nov 14, 2026
2006
2026
Clock starts
Nov 14, 2006
Nov 14, 2006
Term ended
Nov 14, 2026
Nov 14, 2026
Granted
Mar 6, 2012
Mar 6, 2012
base term
after the term ends
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.
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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 14, 2006, when application PCT/JP2006/322659, the earliest non-provisional in its chain, was filed (this one was filed Sep 10, 2009) | Nov 14, 2026 | 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 | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Nov 14, 2026 | High confidence |
This family
| US 8,128,934 | this patent Nov 2026 | Nov 2026 |
| US 8,716,230 | Lapsed on the fee record May 2018 | May 2018 |
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 |
|---|---|---|---|
| Sep 3, 2008 Reel 21494, frame 86 | Miyakawa, Shin; Fujiwara, Masatoshi; Nakamura, Yoshikazu | Ribomic, Inc. | Assignment of Assignor's Interest |
| Sep 3, 2008 Reel 21494, frame 142 | Matsui, Takashi; Sakuma, Sadatoshi | Cell Signals Inc. | Assignment of Assignor's Interest |
| Sep 3, 2008 Reel 21495, frame 931 | Suzumura, Akio; Wang, Jinyan | Cell Signals Inc.; Ribomic, Inc. | Assignment of Assignor's Interest |
| Sep 3, 2008 reel/frame not recorded | Suzumura, Akio; Wang, Jinyan | Cell Signals Inc. | Assignment of Assignor's Interest |
| Sep 3, 2008 reel/frame not recorded | Suzumura, Akio; Wang, Jinyan | Ribomic, Inc. | Assignment of Assignor's Interest |
| Dec 12, 2008 Reel 21991, frame 730 | Cell Signals Inc. | Medical Therapies Limited | Assignment of Assignor's Interest |
| Jan 20, 2012 Reel 27568, frame 496 | Medical Therapies Limited | Cellmid Limited | Change of Name |
| Mar 19, 2012 Reel 27886, frame 259 | Ribomic, Inc. | Cellmid Limited | 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.
Citations
13
later US patents cite this one
That is above the median of utility patents granted in 2012 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.