Collateral for a security interest recorded Apr 10, 2018 (Toronto-Dominion Bank).
Term ends Jul 16, 2035 · High confidence
20-year base term ends Dec 5, 2034
Held by Specialized Desanders Inc.
Filed Dec 5, 2014 as application 14/561,386 · Granted Jan 9, 2018
Base term plus 223 days of patent term adjustment (USPTO delay)
Today
2014
2035
Clock starts
Dec 5, 2014
Dec 5, 2014
Term ends
Jul 16, 2035
Jul 16, 2035
Granted
Jan 9, 2018
Jan 9, 2018
base term
patent term adjustment
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
223
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.
This patent's term runs 223 days past its 20-year base term on prosecution delay. 2 of 3 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 Dec 5, 2014, when this application, 14/561,386, was filed | Dec 5, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +223 days, USPTO patent term adjustment record | Jul 16, 2035 | 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 | Jul 16, 2035 | High confidence |
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 29, 2017 Reel 42521, frame 919 | Hemstock, Christopher A.; Kmicik, Warren | Specialized Desanders Inc. | Assignment of Assignor's Interest |
| Apr 10, 2018 Reel 45492, frame 711 | Specialized Desanders Inc. | Toronto-Dominion Bank | Security Interest |
| Jul 7, 2020 Reel 53139, frame 623 | Specialized Desanders Inc. | The Toronto-Dominion Bank | Security 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
Jul 2035
Term ends Jul 16, 2035. Maintenance fees still fall due before then
Note
The 223 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
10
later US patents cite this one
That is above the median 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.