Term ends no later than Oct 2, 2031 · Low confidence
20-year base term ends Jun 1, 2031
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Reznor LLC
Filed Jan 29, 2015 as application 14/608,658 · Granted Nov 14, 2017
Base term plus 123 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Jun 1, 2011
Jun 1, 2011
Ends no later than
Oct 2, 2031
Oct 2, 2031
Granted
Nov 14, 2017
Nov 14, 2017
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
123
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
2
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 123 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 2 of 3 maintenance fees are paid so far. Confidence: Low. 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 Jun 1, 2011, when application 13/150,750, the earliest non-provisional in its chain, was filed (this one was filed Jan 29, 2015); a parent in its chain could not be resolved (the next row) | Jun 1, 2031 | 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 | +123 days, USPTO patent term adjustment record | Oct 2, 2031 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (filed), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Oct 2, 2031 | Low confidence |
This family
| US 8,943,848 | In force Aug 2033 | Aug 2033 |
| US 9,816,724 | this patent no later than Oct 2031 | no later than Oct 2031 |
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 |
|---|---|---|---|
| Mar 16, 2015 Reel 35207, frame 697 | Nortek, Inc.; Broan-NuTone LLC; Core Brands, LLC; Ergotron, Inc.; Gto Access Systems, LLC; Nortek Air Solutions, LLC; Nortek Global Hvac LLC; Nortek Security & Control LLC; Reznor LLC | Bank Of America, N.a. | Intellectual Property Security Agreement Supplement |
| Mar 30, 2015 Reel 35336, frame 923 | Nortek, Inc.; Broan-NuTone LLC; Core Brands, LLC; Ergotron, Inc.; Gto Access Systems, LLC; Nortek Air Solutions, LLC; Nortek Global Hvac LLC; Nortek Security & Control LLC; Reznor LLC | Wells Fargo Bank, National Association, as Collateral Agent | Security Interest |
| Jan 11, 2017 Reel 41344, frame 514 | Wells Fargo Bank, National Association | Nortek, Inc.; Broan-NuTone LLC; Core Brands, LLC; Ergotron, Inc.; Gto Access Systems, LLC; Nortek Air Solutions, LLC; Nortek Global Hvac LLC; Nortek Security & Control LLC; Reznor LLC | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Nortek, Inc. | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Broan-NuTone LLC | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Core Brands, LLC | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Ergotron, Inc. | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Gto Access Systems, LLC | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Nortek Air Solutions, LLC | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Nortek Global Hvac LLC | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Nortek Security & Control LLC | Notice of Release of Security Interest in Patents |
| Jan 11, 2017 reel/frame not recorded | Wells Fargo Bank, National Association | Reznor LLC | Notice of Release of Security Interest in Patents |
| Jun 17, 2021 Reel 56613, frame 575 | Bank Of America, N.a. | Broan-NuTone LLC; Nortek Air Solutions, LLC; Nortek Global Hvac LLC; Nortek, Inc.; Nortek Air Solutions Canada, Inc.; Reznor LLC; Venmar Ventilation Inc. | Release of Security Interest |
| Jun 17, 2021 reel/frame not recorded | Bank Of America, N.a. | Broan-NuTone LLC | Release of Security Interest |
| Jun 17, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek Air Solutions, LLC | Release of Security Interest |
| Jun 17, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek Global Hvac LLC | Release of Security Interest |
| Jun 17, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek, Inc. | Release of Security Interest |
| Jun 17, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek Air Solutions Canada, Inc. | Release of Security Interest |
| Jun 17, 2021 reel/frame not recorded | Bank Of America, N.a. | Reznor LLC | Release of Security Interest |
| Jun 17, 2021 reel/frame not recorded | Bank Of America, N.a. | Venmar Ventilation Inc. | Release of Security Interest |
| Sep 28, 2021 Reel 57640, frame 777 | Bank Of America, N.a. | Nortek, Inc.; Broan-NuTone LLC; Core Brands, LLC; Ergotron, Inc.; Gto Access Systems, LLC; Nortek Air Solutions, LLC; Nortek Global Hvac LLC; Nortek Security & Control LLC; Reznor LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek, Inc. | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Broan-NuTone LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Core Brands, LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Ergotron, Inc. | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Gto Access Systems, LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek Air Solutions, LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek Global Hvac LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Nortek Security & Control LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
| Sep 28, 2021 reel/frame not recorded | Bank Of America, N.a. | Reznor LLC | Termination and Release of Intellectual Property Security Agreement Supplement |
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.
What's changing
Oct 2031
Term ends no later than Oct 2, 2031. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 123 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (filed) and its reference document is not resolved. A disclaimer would cap the term earlier than Oct 2, 2031. We will not guess the cap.
Citations
24
later US patents cite this one
That is top 25% 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.