Also listed on Wellman, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Apr 6, 2017 (East West Bank).
Term ends Jul 1, 2029 · High confidence
20-year base term ended Jun 21, 2026
Held by Wellman Advanced Materials, LLC
Filed Jun 21, 2006 as application 11/425,498 · Granted Aug 31, 2010
Base term plus 1106 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Jun 21, 2006
Jun 21, 2006
Term ends
Jul 1, 2029
Jul 1, 2029
Granted
Aug 31, 2010
Aug 31, 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
1,106
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 1106 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 21, 2006, when this application, 11/425,498, was filed | Jun 21, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1106 days, USPTO patent term adjustment record | Jul 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 | Jul 1, 2029 | 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 |
|---|---|---|---|
| Sep 18, 2006 Reel 18267, frame 943 | Wingard, Donald A. | Wellman, Inc. | Assignment of Assignor's Interest |
| Jul 22, 2008 Reel 21266, frame 792 | Wellman, Inc.; Fiber Industries, Inc. | Deutsche Bank Trust Company Americas, as Agent | Security Agreement |
| Feb 2, 2009 Reel 22427, frame 196 | Deutsche Bank Trust Company Americas, as Collateral Agent | Wellman, Inc. and Fiber Industries, Inc. | Release of Security in Patents |
| Feb 3, 2009 Reel 22399, frame 911 | Deutsche Bank Trust Company Americas, as Collatera | Wellman, Inc.; Fiber Industries, Inc. | Release of Security in Patents |
| Feb 3, 2009 reel/frame not recorded | Deutsche Bank Trust Company Americas, as Collatera | Wellman, Inc. | Release of Security in Patents |
| Feb 3, 2009 reel/frame not recorded | Deutsche Bank Trust Company Americas, as Collatera | Fiber Industries, Inc. | Release of Security in Patents |
| Jan 21, 2010 Reel 23821, frame 95 | Wellman Plastics Recycling LLC | Suntrust Bank | Security Agreement |
| Jan 28, 2010 Reel 23861, frame 406 | Wellman, Inc.; Fiber Industries, Inc. | Johnsonville Acquisition Company LLC | Assignment of Assignor's Interest |
| Jan 28, 2010 Reel 23861, frame 451 | Johnsonville Acquisition Company LLC | Wellman Plastics Recycling LLC | Change of Name |
| Mar 23, 2016 Reel 38237, frame 835 | Wellman Plastics Recycling, LLC | Wellman Advanced Materials, LLC | Change of Name |
| Apr 6, 2017 Reel 41883, frame 658 | Wellman Advanced Materials, LLC | East West 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.
What's changing
Jul 2029
Term ends Jul 1, 2029. No further fees fall due before then
Note
The 1106 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
21
later US patents cite this one
That is above 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.