Term ends Jan 7, 2029 · Medium confidence
20-year base term ends Jan 7, 2029
Why Medium: A parent in the chain could not be resolved.
Held by CertainTeed LLC
Filed Aug 17, 2020 as application 16/995,448 · Granted May 18, 2021
Base term, 20 years from filing
Today
2009
2029
Clock starts
Jan 7, 2009
Jan 7, 2009
Term ends
Jan 7, 2029
Jan 7, 2029
Granted
May 18, 2021
May 18, 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 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
12
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 1 maintenance fees is paid so far. Confidence: Medium. 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 Jan 7, 2009, when application PCT/US2009/030253, the earliest non-provisional in its chain, was filed (this one was filed Aug 17, 2020); a parent in its chain could not be resolved (the next row) | Jan 7, 2029 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium 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 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 7, 2029 | Medium confidence |
This family
| US 8,319,093 | In force Jan 2028 | Jan 2028 |
| US 8,404,967 | In force Jan 2028 | Jan 2028 |
| US 8,835,751 | In force Jan 2029 | Jan 2029 |
| US 9,276,141 | In force Jan 2029 | Jan 2029 |
| US 9,998,067 | In force Jan 2028 | Jan 2028 |
| US 10,784,813 | In force Jan 2029 | Jan 2029 |
| US 11,012,026 | this patent Jan 2029 | Jan 2029 |
| US 11,258,399 | In force Jan 2029 | Jan 2029 |
8 of 12 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 |
|---|---|---|---|
| Aug 18, 2020 Reel 53520, frame 419 | Kalkanoglu, Husnu M.; Jacobs, Gregory F.; Shiao, Ming Liang | CertainTeed Corporation | Assignment of Assignor's Interest |
| Sep 15, 2020 Reel 53782, frame 62 | CertainTeed Corporation | CertainTeed LLC | Change of Name |
| Sep 15, 2020 Reel 53773, frame 698 | CertainTeed LLC | CertainTeed LLC | Merger |
| Sep 15, 2020 Reel 53782, frame 95 | CertainTeed LLC | CertainTeed LLC | Change of Name |
| Aug 26, 2025 Reel 72576, frame 234 | CertainTeed Corporation | CertainTeed LLC | Change of Name |
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
Jan 2029
Term ends Jan 7, 2029. No further fees fall due before then
Citations
75
later US patents cite this one
That is top 5% 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.