Surrendered on reissue Feb 14, 2023 · High confidence
20-year base term ends Aug 20, 2033
Surrendered on reissue Feb 14, 2023 · its term and maintenance fees continue in US RE49,421.
Held by Lutron Technology Company LLC
Filed Aug 20, 2013 as application 13/970,990 · Granted Feb 21, 2017
Base term, 20 years from filing, plus 562 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Surrendered Feb 14, 2023
2013
2034
Clock starts
Aug 20, 2013
Aug 20, 2013
No longer in force
Feb 14, 2023
Feb 14, 2023
Granted
Feb 21, 2017
Feb 21, 2017
Term would have run to
Jun 20, 2034
Jun 20, 2034
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
562
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,237,620.
1 of 3
Maintenance fees paid
Fees paid on this patent before its reissue. Those after fall due on the reissue, which carries the term on.
40
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 562 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 20, 2013, when this application, 13/970,990, was filed | Aug 20, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +562 days, USPTO patent term adjustment record | Mar 5, 2035 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,237,620) | capped to Jun 20, 2034 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | no change | High confidence |
| Reissue | US RE49,421 issued Feb 14, 2023, and this patent's term continues in it (35 U.S.C. 251, 252) | surrendered Feb 14, 2023 | High confidence |
| Surrendered on reissue | The steps above, in order | Feb 14, 2023 | High confidence |
This family
| Application 13/790,990 | Abandoned not computed | not computed |
| US 9,578,724 | this patent Feb 2023 | Feb 2023 |
| US 9,360,174 | Surrendered on reissue Feb 2022 | Feb 2022 |
| US 9,146,028 | In force Dec 2033 | Dec 2033 |
| US 9,769,899 | In force Jul 2035 | Jul 2035 |
| US 9,557,214 | In force Dec 2034 | Dec 2034 |
| US 10,161,786 | In force Apr 2037 | Apr 2037 |
| US 9,736,903 | In force May 2035 | May 2035 |
8 of 40 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 |
|---|---|---|---|
| Aug 20, 2013 Reel 31043, frame 502 | Knapp, David J.; Ho, Horace C.; Savage, Joseph A. | Ketra, Inc. | Assignment of Assignor's Interest |
| Apr 17, 2018 Reel 45966, frame 790 | Ketra, Inc. | Lutron Ketra, LLC | Assignment of Assignor's Interest |
| Jan 8, 2021 Reel 54940, frame 343 | Lutron Ketra, LLC | Lutron Technology Company LLC | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 562 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,237,620.
Citations
51
later US patents cite this one
That is top 10% of utility patents granted in 2017 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.