Term ends Mar 27, 2031 · Medium confidence
20-year base term ends Dec 21, 2030
Why Medium: A parent in the chain could not be resolved.
Held by Terumo Corporation
Filed Dec 5, 2011 as application 13/311,430 · Granted Jan 16, 2018
Base term plus 96 days of patent term adjustment (USPTO delay)
Today
2010
2031
Clock starts
Dec 21, 2010
Dec 21, 2010
Term ends
Mar 27, 2031
Mar 27, 2031
Granted
Jan 16, 2018
Jan 16, 2018
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
96
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.
49
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 96 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 21, 2010, when application PCT/US2010/061627, the earliest non-provisional in its chain, was filed (this one was filed Dec 5, 2011); a parent in its chain could not be resolved (the next row) | Dec 21, 2030 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +96 days, USPTO patent term adjustment record | Mar 27, 2031 | 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 | Mar 27, 2031 | Medium confidence |
This family
| US 9,867,725 | this patent Mar 2031 | Mar 2031 |
| US 9,439,791 | In force Apr 2034 | Apr 2034 |
| US 9,693,852 | In force May 2035 | May 2035 |
| US 10,398,441 | In force May 2036 | May 2036 |
| Application 62/203,882 | Provisional application no patent term | no patent term |
| US 10,492,938 | In force Sep 2037 | Sep 2037 |
| US 10,335,297 | In force no later than Dec 2033 | no later than Dec 2033 |
| US 10,543,113 | In force Feb 2034 | Feb 2034 |
8 of 49 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 |
|---|---|---|---|
| May 22, 2012 Reel 28248, frame 8 | Tieu, Tai D.; Cruise, Gregory M.; Griffith, Heather; Nguyen, Helen; Nguyen, Minh; Pung, Ponaka; Vong, Shirley | Microvention, Inc. | Assignment of Assignor's Interest |
| Apr 17, 2015 Reel 35439, frame 422 | Microvention, Inc. | Terumo Corporation | 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.
What's changing
Mar 2031
Term ends Mar 27, 2031. Maintenance fees still fall due before then
Note
The 96 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
97
later US patents cite this one
That is top 5% of utility patents granted in 2018 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.