Term ends Nov 6, 2028 · High confidence
20-year base term ends Nov 6, 2028
Held by CertainTeed LLC
Filed Nov 6, 2008 as application 12/266,409 · Granted May 14, 2013
Base term plus 1084 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2008
2028
Clock starts
Nov 6, 2008
Nov 6, 2008
Term ends
Nov 6, 2028
Nov 6, 2028
Granted
May 14, 2013
May 14, 2013
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
1,084
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 8,375,653.
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.
6
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 1084 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 Nov 6, 2008, when this application, 12/266,409, was filed | Nov 6, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1084 days, USPTO patent term adjustment record | Oct 26, 2031 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,375,653) | capped to Nov 6, 2028 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force (reinstated) | High confidence |
| Computed term end | The steps above, in order | Nov 6, 2028 | High confidence |
This family
| US 8,438,796 | this patent Nov 2028 | Nov 2028 |
| US 8,375,653 | In force (reinstated) Nov 2028 | Nov 2028 |
| US 9,178,465 | In force Nov 2028 | Nov 2028 |
| Application 90/015,332 | Pending not computed | not computed |
| Application 90/015,330 | Pending not computed | not computed |
| Application 90/015,331 | Pending not computed | not computed |
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 29, 2009 Reel 23714, frame 79 | Shiao, Ming-liang; Kalkanoglu, Husnu M.; Shaw, Wayne E.; Jacobs, Gregory F. | CertainTeed Corporation | Assignment of Assignor's Interest |
| May 20, 2020 Reel 52713, frame 468 | CertainTeed LLC | CertainTeed LLC | Merger |
| May 20, 2020 Reel 53702, frame 527 | CertainTeed LLC | CertainTeed LLC | Change of Name |
| May 20, 2020 Reel 52717, frame 846 | CertainTeed Corporation | CertainTeed LLC | Change of Name |
| Jun 10, 2020 Reel 52888, frame 889 | CertainTeed LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Nov 2028
Term ends Nov 6, 2028. No further fees fall due before then
Note
The 1084 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 8,375,653.
Citations
191
later US patents cite this one
That is top 5% 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.