Also listed on Certainteeed Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Mar 12, 2039 · High confidence
20-year base term ends Mar 12, 2039
Held by CertainTeed LLC
Filed Mar 12, 2019 as application 16/351,257 · Granted Mar 2, 2021
Base term, 20 years from filing
Today
2019
2039
Clock starts
Mar 12, 2019
Mar 12, 2019
Term ends
Mar 12, 2039
Mar 12, 2039
Granted
Mar 2, 2021
Mar 2, 2021
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
2
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 is its 20-year base term, with no adjustment for prosecution delay. 1 of 3 maintenance fees is paid so far. 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 Mar 12, 2019, when this application, 16/351,257, was filed | Mar 12, 2039 | 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 |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 12, 2039 | High confidence |
This family
| Application 62/642,456 | Provisional application no patent term | no patent term |
| US 10,934,719 | this patent Mar 2039 | Mar 2039 |
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 |
|---|---|---|---|
| Dec 11, 2020 Reel 54620, frame 775 | Steffes, Stephen W.; Kirn, Brian W. | Certainteeed Corporation | Nunc Pro Tunc Assignment |
| Jan 28, 2021 Reel 55169, frame 675 | CertainTeed Corporation | CertainTeed LLC | Conversion |
| Jan 28, 2021 Reel 55169, frame 682 | CertainTeed LLC | CertainTeed LLC | Conversion, Reverse Merger, Conversion |
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.
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Alerts on its grants, lapses and transfers.
What's changing
Mar 2039
Term ends Mar 12, 2039. Maintenance fees still fall due before then
Citations
2
later US patents cite this one
That is above the median of utility patents granted in 2021 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.