Collateral for a security interest recorded Nov 30, 2015 (Comerica Bank).
Lapsed Feb 3, 2023 on the fee record · High confidence
20-year base term ends Mar 13, 2033
Second maintenance fee unpaid; grace period ended.
Held by Cooledge Lighting Inc.
Filed Mar 13, 2013 as application 13/799,807 · Granted Feb 3, 2015
Base term, 20 years from filing, plus 79 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Feb 3, 2023
2013
2033
Clock starts
Mar 13, 2013
Mar 13, 2013
No longer in force
Feb 3, 2023
Feb 3, 2023
Granted
Feb 3, 2015
Feb 3, 2015
Term would have run to
Mar 13, 2033
Mar 13, 2033
base term
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
79
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 8,704,448, US 8,786,200, US 8,884,534.
1 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.
20
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Mar 13, 2033: its 20-year base term plus 79 days of term adjustment for 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 Mar 13, 2013, when this application, 13/799,807, was filed | Mar 13, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +79 days, USPTO patent term adjustment record | May 31, 2033 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,704,448, US 8,786,200, US 8,884,534) | capped to Mar 13, 2033 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Feb 3, 2023 | High confidence |
| Computed term end | The steps above, in order | Feb 3, 2023 | High confidence |
This family
| US 8,947,001 | this patent Feb 2023 | Feb 2023 |
| US 8,786,200 | Lapsed on the fee record Jul 2022 | Jul 2022 |
| US 8,704,448 | Lapsed on the fee record Apr 2022 | Apr 2022 |
| Application PCT/US2013/056567 | PCT application no patent term | no patent term |
| US 8,884,534 | In force Mar 2033 | Mar 2033 |
| US 9,506,633 | In force Aug 2033 | Aug 2033 |
| US 9,494,305 | Lapsed on the fee record Nov 2024 | Nov 2024 |
| US 9,526,132 | In force Mar 2033 | Mar 2033 |
8 of 20 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 |
|---|---|---|---|
| May 9, 2013 Reel 30384, frame 544 | Tischler, Michael A.; Jungwirth, Paul | Cooledge Lighting Inc. | Assignment of Assignor's Interest |
| Nov 30, 2015 Reel 37171, frame 512 | Cooledge Lighting Inc. | Comerica 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
Note
The 79 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 8,704,448, US 8,786,200, US 8,884,534.
Citations
35
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.