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 Sep 1, 2029 · High confidence
20-year base term ends Apr 24, 2029
Held by Fxi, Inc.
Filed Feb 14, 2011 as application 13/026,422 · Granted Jan 29, 2013
Base term plus 130 days of patent term adjustment (USPTO delay)
Today
2009
2029
Clock starts
Apr 24, 2009
Apr 24, 2009
Term ends
Sep 1, 2029
Sep 1, 2029
Granted
Jan 29, 2013
Jan 29, 2013
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
130
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.
6
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 130 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 24, 2009, when application 12/429,778, the earliest non-provisional in its chain, was filed (this one was filed Feb 14, 2011) | Apr 24, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +130 days, USPTO patent term adjustment record | Sep 1, 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 | Sep 1, 2029 | High confidence |
This family
| US 8,209,804 | In force Jun 2029 | Jun 2029 |
| US 7,886,388 | In force Apr 2029 | Apr 2029 |
| US D636,622 | Term ended Apr 2025 | Apr 2025 |
| US D652,715 | Term ended Jan 2026 | Jan 2026 |
| US 8,359,689 | this patent Sep 2029 | Sep 2029 |
5 of 6 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 |
|---|---|---|---|
| Mar 16, 2011 Reel 25964, frame 400 | Warren, Stephen C.; Niederoest, Beat B.; Covey, Kerry L.; Contreras, Jose D.m.; Neto, Mario F. | 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 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
Sep 2029
Term ends Sep 1, 2029. No further fees fall due before then
Note
The 130 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
64
later US patents cite this one
That is top 10% of utility patents granted in 2013 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.