Also listed on Phoenix LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 4, 2026 · High confidence
Held by D.H. Anderson Holdings Inc.
Filed Jan 28, 2011 as application 29/384,240 · Granted Dec 4, 2012
Base term, 14 years from grant
Today
2012
2026
Clock starts
Dec 4, 2012
Dec 4, 2012
Term ends
Dec 4, 2026
Dec 4, 2026
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
14 years from grant
Base term
No maintenance fees are payable on this kind of patent.
This patent's term is its base term, 14 years from grant, with no adjustment for prosecution delay. No maintenance fees are payable on this kind of patent. 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, 14 years from grant | Granted Dec 4, 2012 | Dec 4, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Computed term end | The steps above, in order | Dec 4, 2026 | 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 |
|---|---|---|---|
| Feb 17, 2011 Reel 25824, frame 866 | Clement, Leonard W. | Phoenix Performance Products, Inc. | Assignment of Assignor's Interest |
| May 9, 2014 Reel 32861, frame 874 | Phoenix Performance Products, Inc. | D.H. Anderson Holdings Inc. | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center
No maintenance fees are payable on this kind of patent, so the record carries no fee events.
What's changing
Dec 2026
Term ends Dec 4, 2026. No maintenance fees are payable on this kind of patent
Citations
25
later US patents cite this one
That is above the median of design 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.