Collateral for a security interest recorded Aug 27, 2019 (Wells Fargo Capital Finance, LLC).
Term ends Aug 17, 2028 · High confidence
20-year base term ends Jun 25, 2027
Filed Jun 25, 2007 as application 11/767,555 · Granted Jul 27, 2010
Base term plus 419 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Jun 25, 2007
Jun 25, 2007
Term ends
Aug 17, 2028
Aug 17, 2028
Granted
Jul 27, 2010
Jul 27, 2010
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
419
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.
This patent's term runs 419 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 Jun 25, 2007, when this application, 11/767,555, was filed | Jun 25, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +419 days, USPTO patent term adjustment record | Aug 17, 2028 | 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 | Aug 17, 2028 | High confidence |
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 |
|---|---|---|---|
| Jun 25, 2007 Reel 19471, frame 452 | Koryabkina, Natalya; Khramov, Mikhail; Monical, Valerie | Solutia, Inc. | Assignment of Assignor's Interest |
| Apr 29, 2009 Reel 22610, frame 495 | Solutia Inc.; Cpfilms Inc.; Flexsys America L.P. | Citibank, N.a. | Abl Patent Security Agreement |
| Apr 29, 2009 Reel 22610, frame 697 | Solutia Inc.; Cpfilms Inc.; Flexsys America L.P. | Citibank, N.a. | Term Loan Patent Security Agreement |
| Jun 4, 2009 Reel 22783, frame 49 | Ascend Performance Materials LLC | Wells Fargo Foothill, LLC | Security Agreement |
| Jul 10, 2009 Reel 22939, frame 170 | Solutia Inc. | Ascend Performance Materials LLC | Assignment of Assignor's Interest |
| Sep 18, 2009 Reel 23254, frame 24 | Citibank, N.A., a National Association | Solutia, Inc. | Partial Release of Term Loan Security Interest in Patents Recorded on Reel 022610 Frame 0697 on 4/29/2009 |
| Sep 18, 2009 Reel 23254, frame 59 | Citibank, N.A., a National Association | Solutia, Inc. | Partial Release of Term Loan Security Interest in Patents Recorded on Reel 022610 Frame 0495 on 4/29/2009 |
| Mar 30, 2010 Reel 24151, frame 469 | Citibank, N.a. | Solutia Inc.; Cpfilms Inc.; Flexsys America L.P. | Release of Abl Security Interest in Patents - Reel/Frame 022610/0495 |
| Mar 30, 2010 Reel 24151, frame 513 | Citibank, N.a. | Solutia Inc.; Cpfilms Inc.; Flexsys America L.P. | Release of Term Loan Security Interest in Patents - Reel/Frame 022610/0697 |
| Mar 30, 2010 reel/frame not recorded | Citibank, N.a. | Solutia Inc. | Release of Abl Security Interest in Patents - Reel/Frame 022610/0495 |
| Mar 30, 2010 reel/frame not recorded | Citibank, N.a. | Cpfilms Inc. | Release of Abl Security Interest in Patents - Reel/Frame 022610/0495 |
| Mar 30, 2010 reel/frame not recorded | Citibank, N.a. | Flexsys America L.P. | Release of Abl Security Interest in Patents - Reel/Frame 022610/0495 |
| Mar 30, 2010 reel/frame not recorded | Citibank, N.a. | Solutia Inc. | Release of Term Loan Security Interest in Patents - Reel/Frame 022610/0697 |
| Mar 30, 2010 reel/frame not recorded | Citibank, N.a. | Cpfilms Inc. | Release of Term Loan Security Interest in Patents - Reel/Frame 022610/0697 |
| Mar 30, 2010 reel/frame not recorded | Citibank, N.a. | Flexsys America L.P. | Release of Term Loan Security Interest in Patents - Reel/Frame 022610/0697 |
| May 23, 2012 Reel 28260, frame 197 | Ascend Performance Materials LLC | Ascend Performance Materials Operations LLC | Change of Name |
| Aug 27, 2019 Reel 50177, frame 150 | Ascend Performance Materials Operations LLC | Wells Fargo Capital Finance, LLC | Security Interest |
| Aug 28, 2019 Reel 50207, frame 184 | Ascend Performance Materials Operations LLC | Bank Of America, N.a. | Security Interest |
| Apr 10, 2025 Reel 70811, frame 705 | Bank Of America, N.a. | Wilmington Savings Fund Society, FSB | Security Interest |
| Dec 19, 2025 Reel 74007, frame 183 | Ascend Performance Materials Operations LLC | Wells Fargo Bank, National Association | Security Interest |
| Dec 23, 2025 Reel 74050, frame 90 | Wilmington Savings Fund Society, FSB | Ascend Performance Materials Operations LLC | Release of Security Interest |
| Dec 23, 2025 Reel 74056, frame 183 | Ascend Performance Materials Operations LLC | Wilmington Savings Fund Society, FSB | 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
Aug 2028
Term ends Aug 17, 2028. No further fees fall due before then
Note
The 419 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2010 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.