Term ends Aug 12, 2031 · High confidence
20-year base term ends Aug 12, 2031
Held by Fenwal, Inc.
Filed Apr 28, 2022 as application 17/732,073 · Granted Feb 13, 2024
Base term, 20 years from filing
Today
2011
2031
Clock starts
Aug 12, 2011
Aug 12, 2011
Term ends
Aug 12, 2031
Aug 12, 2031
Granted
Feb 13, 2024
Feb 13, 2024
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
0 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
7
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. 0 of 1 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 Aug 12, 2011, when application 13/209,161, the earliest non-provisional in its chain, was filed (this one was filed Apr 28, 2022) | Aug 12, 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 | 0 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 12, 2031 | High confidence |
This family
| US 11,462,321 | In force May 2033 | May 2033 |
| US 10,431,335 | In force Sep 2033 | Sep 2033 |
| US 9,727,696 | In force Aug 2031 | Aug 2031 |
| US 11,393,583 | In force Jan 2035 | Jan 2035 |
| US 11,901,069 | this patent Aug 2031 | Aug 2031 |
| US 11,676,715 | In force Sep 2031 | Sep 2031 |
| Application 18/196,307 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Apr 28, 2022 Reel 59761, frame 686 | Cork, William H.; Case, Brian C.; Prendergast, Jonathan; Barry, John W. | Fenwal, Inc. | Assignment of Assignor's Interest |
| Nov 21, 2023 Reel 65636, frame 419 | Case, Brian C.; Prendergast, Jonathan; Barry, John W, JR.; Min, Kyungyoon; Cork, William H.; Calhoun, Daryl Richard; Larson, Christine M. | Fenwal, Inc. | 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
Aug 2031
Term ends Aug 12, 2031. Maintenance fees still fall due before then
Citations
1
later US patent cites this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.