Term ended Sep 30, 2026 · High confidence
20-year base term ended Feb 3, 2026
Held by Cannuflow, Inc.
Filed Feb 28, 2012 as application 13/407,023 · Granted Nov 17, 2015
Base term plus 239 days of patent term adjustment (USPTO delay)
Today
Term ended Sep 30, 2026
2006
2026
Clock starts
Feb 3, 2006
Feb 3, 2006
Term ended
Sep 30, 2026
Sep 30, 2026
Granted
Nov 17, 2015
Nov 17, 2015
base term
patent term adjustment
after the term ends
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
239
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 7,503,893, to Sep 30, 2026. The term already ends on or before that date, so the cap shortened nothing.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
5
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 239 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Feb 3, 2006, when application 11/346,764, the earliest non-provisional in its chain, was filed (this one was filed Feb 28, 2012) | Feb 3, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +239 days, USPTO patent term adjustment record | Sep 30, 2026 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,503,893) | resolves to Sep 30, 2026, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Sep 30, 2026 | High confidence |
This family
| US 7,503,893 | Term ended Oct 2026 | Oct 2026 |
| Application PCT/US2007/060725 | PCT application no patent term | no patent term |
| US 8,123,676 | In force Jul 2027 | Jul 2027 |
| US 9,186,055 | this patent Sep 2026 | Sep 2026 |
| Application 14/944,001 | Abandoned 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 |
|---|---|---|---|
| Feb 28, 2012 Reel 27775, frame 678 | Kucklick, Theodore R. | Cannuflow, 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
Note
The 239 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 7,503,893, ends no earlier than this term, so it caps nothing.
Citations
16
later US patents cite this one
That is above the median 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.