Also listed on Foamex L.P., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Nov 2, 2017 (U.S. Bank National Association).
Term ends Dec 10, 2029 · High confidence
20-year base term ends Apr 21, 2028
Held by Fxi, Inc.
Filed Apr 21, 2008 as application 12/106,447 · Granted Aug 21, 2012
Base term plus 598 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Apr 21, 2008
Apr 21, 2008
Term ends
Dec 10, 2029
Dec 10, 2029
Granted
Aug 21, 2012
Aug 21, 2012
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
598
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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 598 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Apr 21, 2008, when this application, 12/106,447, was filed | Apr 21, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +598 days, USPTO patent term adjustment record | Dec 10, 2029 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 10, 2029 | High confidence |
This family
| Application 10/885,481 | Abandoned not computed | not computed |
| US 7,687,139 | Term ended Aug 2024 | Aug 2024 |
| US 8,247,466 | this patent Dec 2029 | Dec 2029 |
| US D621,182 | Term ended Aug 2024 | Aug 2024 |
| US D642,845 | Term ended Aug 2025 | Aug 2025 |
| US D642,847 | Term ended Aug 2025 | Aug 2025 |
| US D642,413 | Term ended Aug 2025 | Aug 2025 |
| US 8,621,694 | In force Feb 2031 | Feb 2031 |
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 |
|---|---|---|---|
| Apr 21, 2008 Reel 20831, frame 971 | Brown, Linda | Foamex L.P. | Assignment of Assignor's Interest |
| Jul 20, 2009 Reel 23056, frame 120 | Foamex Innovations Operating Company | Wachovia Bank, National Association | Security Agreement |
| Jul 28, 2009 Reel 23015, frame 187 | Foamex International Inc.; Foamex L.P. | MP Foam Dip LLC | Assignment of Assignor's Interest |
| Aug 14, 2009 Reel 23094, frame 786 | Foamex Innovations, Inc. (Formerly MP Foam Dip LLC) | Foamex Innovations Operating Company | Assignment of Assignor's Interest |
| Dec 7, 2011 Reel 27339, frame 4 | Foamex Innovations Operating Company | Fxi, Inc. | Change of Name |
| Dec 2, 2015 Reel 37186, frame 125 | Wells Fargo Bank, National Association, Successor by Merger to Wachovia Bank, National Association, as Agent | Fxi, Inc. | Release of Security Interest |
| Dec 2, 2015 Reel 37189, frame 351 | Fxi, Inc. | Suntrust Bank, As Agent | Security Interest |
| Nov 2, 2017 Reel 44360, frame 430 | Suntrust Bank, As Agent | Fxi, Inc. | Release of Security Interest |
| Nov 2, 2017 Reel 44360, frame 806 | Fxi, Inc. | Suntrust Bank, As Agent | Security Interest |
| Nov 2, 2017 Reel 44779, frame 483 | Fxi, Inc. | U.S. Bank National Association | Security Interest |
| Feb 24, 2020 Reel 52004, frame 277 | Fxi, Inc.; Innocor, Inc. | U.S. Bank National Association | Security Interest |
| Feb 25, 2020 Reel 52019, frame 442 | Fxi, Inc.; Innocor, Inc. | Truist Bank, As Agent | Security Interest |
| Feb 25, 2020 Reel 52019, frame 659 | Truist Bank, as Agent, Successor-by-Merger to Suntrust Bank | Fxi, Inc. | Release of Security Interest |
| May 1, 2023 Reel 63492, frame 830 | Fxi, Inc. | U.S. Bank Trust Company, National Association, as Agent | Security Interest |
| May 1, 2023 Reel 63500, frame 738 | U.S. Bank Trust Company, National Association, as Agent | Fxi, Inc. | Release of Security Interest in Patents at R/F 044779/0483 |
| Nov 11, 2025 Reel 73572, frame 811 | Fxi, Inc. | U.S. Bank Trust Company, National Association, as Agent | Corrective Assignment to Correct the Supporting Documents Previously Recorded at Reel: 63492 Frame: 830. Assignor(S) Hereby Confirms the Security Interest. |
| Nov 20, 2025 Reel 72975, frame 724 | Fxi, Inc. | U.S. Bank Trust Company, National Association, as Agent | Security Interest |
| Nov 25, 2025 Reel 73697, frame 892 | Fxi, Inc. | U.S. Bank Trust Company, National Association, as Agent | Patent Security Agreement - Senior Secured Notes |
| Nov 25, 2025 Reel 73697, frame 899 | Fxi, Inc. | U.S. Bank Trust Company, National Association, as Agent | Patent Security Agreement - Junior Secured Notes |
| Nov 25, 2025 Reel 73698, frame 832 | U.S. Bank Trust Company, National Association, as Successor in Interest to U.S. Bank National Association | Fxi, Inc. (in Its Own Capacity and as Successor by Merger to Innocor, Inc.) | Release of Security Interest in Patents Recorded at Reel/Frame 052004/0277 |
| Nov 25, 2025 Reel 73698, frame 839 | U.S. Bank Trust Company, National Association | Fxi, Inc. | Release of Security Interest in Patents Recorded at Reel/Frame 063492/0830 |
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
Dec 2029
Term ends Dec 10, 2029. No further fees fall due before then
Note
The 598 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is above the median of utility patents granted in 2012 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.