Collateral for a security interest recorded Jul 7, 2020 (The Toronto-Dominion Bank).
Term ends Jul 21, 2032 · High confidence
20-year base term ends Feb 13, 2032
Held by Specialized Desanders Inc.
Filed Dec 11, 2014 as application 14/566,849 · Granted Apr 10, 2018
Base term plus 159 days of patent term adjustment (USPTO delay)
Today
2012
2032
Clock starts
Feb 13, 2012
Feb 13, 2012
Term ends
Jul 21, 2032
Jul 21, 2032
Granted
Apr 10, 2018
Apr 10, 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
159
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.
9
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 159 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 Feb 13, 2012, when application 13/372,291, the earliest non-provisional in its chain, was filed (this one was filed Dec 11, 2014) | Feb 13, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +159 days, USPTO patent term adjustment record | Jul 21, 2032 | 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 21, 2032 | High confidence |
This family
| US 6,983,852 | Term ended Jan 2024 | Jan 2024 |
| US 7,383,958 | Term ended no later than Nov 2023 | no later than Nov 2023 |
| US 8,945,256 | In force Feb 2033 | Feb 2033 |
| US 9,182,066 | Lapsed on the fee record Nov 2019 | Nov 2019 |
| US 9,327,214 | In force Sep 2032 | Sep 2032 |
| Application 62/087,604 | Provisional application no patent term | no patent term |
| US 9,938,812 | this patent Jul 2032 | Jul 2032 |
| US 9,695,661 | In force Dec 2032 | Dec 2032 |
8 of 9 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 |
|---|---|---|---|
| Feb 22, 2018 Reel 45009, frame 288 | Hemstock, Christopher A. | Specialized Desanders Inc. | Assignment of Assignor's 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 2032
Term ends Jul 21, 2032. Maintenance fees still fall due before then
Note
The 159 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
17
later US patents cite this one
That is top 25% 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.