Term ended May 11, 2026 · High confidence
20-year base term ended Aug 19, 2025
Held by Cannuflow, Inc.
Filed Mar 25, 2013 as application 13/850,241 · Granted Jan 12, 2016
Base term plus 265 days of patent term adjustment (USPTO delay)
Today
Term ended May 11, 2026
2005
2026
Clock starts
Aug 19, 2005
Aug 19, 2005
Term ended
May 11, 2026
May 11, 2026
Granted
Jan 12, 2016
Jan 12, 2016
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
265
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 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.
8
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 265 days past its 20-year base term on prosecution delay. 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 19, 2005, when application 11/213,645, the earliest non-provisional in its chain, was filed (this one was filed Mar 25, 2013) | Aug 19, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +265 days, USPTO patent term adjustment record | May 11, 2026 | 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 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | May 11, 2026 | High confidence |
This family
| US 7,575,565 | In force Aug 2027 | Aug 2027 |
| Application PCT/US2006/032281 | PCT application no patent term | no patent term |
| US 7,993,299 | Term ended Aug 2025 | Aug 2025 |
| Application 13/204,961 | Abandoned not computed | not computed |
| US 9,233,236 | this patent May 2026 | May 2026 |
| US 10,070,881 | Term ended Oct 2026 | Oct 2026 |
| US 10,813,658 | Term ended Mar 2026 | Mar 2026 |
| US 11,730,350 | Term ended no later than Aug 2026 | no later than Aug 2026 |
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 |
|---|---|---|---|
| Jan 14, 2014 Reel 31961, frame 97 | 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 265 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2016 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.