Term ends Jan 14, 2028 · High confidence
20-year base term ends Jan 7, 2029
Held by CertainTeed LLC
Filed Jul 1, 2010 as application 12/811,493 · Granted Mar 26, 2013
Base term plus 144 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2009
2029
Clock starts
Jan 7, 2009
Jan 7, 2009
Term ends
Jan 14, 2028
Jan 14, 2028
Granted
Mar 26, 2013
Mar 26, 2013
base term
after the term ends
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
144
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,319,093.
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.
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 runs 144 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Jan 7, 2009, when application PCT/US2009/030253, the earliest non-provisional in its chain, was filed (this one was filed Jul 1, 2010) | Jan 7, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +144 days, USPTO patent term adjustment record | May 31, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,319,093) | capped to Jan 14, 2028 | 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 | Jan 14, 2028 | High confidence |
This family
| US 8,319,093 | In force Jan 2028 | Jan 2028 |
| US 8,404,967 | this patent 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 | In force 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 |
|---|---|---|---|
| Jan 10, 2018 Reel 44581, frame 949 | Kalkanoglu, Husnu M, MR.; Jacobs, Gregory F, MR.; Shiao, Ming Liang, MR. | CertainTeed Corporation | Assignment of Assignor's Interest |
| Sep 29, 2022 Reel 61569, frame 680 | CertainTeed Corporation | CertainTeed LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jan 2028
Term ends Jan 14, 2028. No further fees fall due before then
Note
The 144 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,319,093.
Citations
88
later US patents cite this one
That is top 10% of utility patents granted in 2013 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.