Collateral for a security interest recorded Jun 4, 2018 (Citibank, N.A.).
Term ends Sep 15, 2034 · Medium confidence
20-year base term ends Sep 15, 2034
Why Medium: A parent in the chain could not be resolved.
Filed Jan 23, 2017 as application 15/413,004 · Granted Mar 12, 2019
Base term, 20 years from filing
Today
2014
2034
Clock starts
Sep 15, 2014
Sep 15, 2014
Term ends
Sep 15, 2034
Sep 15, 2034
Granted
Mar 12, 2019
Mar 12, 2019
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,588,168, to Sep 15, 2034. The term already ends on or before that date, so the cap shortened nothing.
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.
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 Sep 15, 2014, when application 14/486,929, the earliest non-provisional in its chain, was filed (this one was filed Jan 23, 2017); a parent in its chain could not be resolved (the next row) | Sep 15, 2034 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,588,168) | resolves to Sep 15, 2034, no earlier than this term, so no change | 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 | Sep 15, 2034 | Medium confidence |
This family
| US 8,990,036 | In force Sep 2034 | Sep 2034 |
| Application PCT/US2014/055919 | PCT application no patent term | no patent term |
| US 9,588,168 | In force Sep 2034 | Sep 2034 |
| Application PCT/US2016/014061 | PCT application no patent term | no patent term |
| US 10,228,409 | this patent Sep 2034 | Sep 2034 |
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 23, 2017 Reel 41050, frame 869 | Schweitzer, Edmund O, III; Mynam, Mangapathirao Venkata; Guzman-casillas, Armando | Schweitzer Engineering Laboratories, Inc. | Assignment of Assignor's Interest |
| Jun 4, 2018 Reel 47231, frame 253 | Schweitzer Engineering Laboratories, Inc. | Citibank, N.A., as Administrative Agent | Notice of Grant of Security Interest in Patents |
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
Sep 2034
Term ends Sep 15, 2034. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,588,168, ends no earlier than this term, so it caps nothing.
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2019 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.