Term ends no later than Dec 2, 2026 · Medium confidence
20-year base term ended Feb 20, 2021
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Kingspan Insulation LLC
Filed Mar 3, 2006 as application 11/367,066 · Granted May 23, 2017
Base term plus 2111 days of patent term adjustment (USPTO delay)
Today
2001
2026
Clock starts
Feb 20, 2001
Feb 20, 2001
Ends no later than
Dec 2, 2026
Dec 2, 2026
Granted
May 23, 2017
May 23, 2017
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
2,111
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
7
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 2111 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 2 of 2 maintenance fees are 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 Feb 20, 2001, when application 09/788,776, the earliest non-provisional in its chain, was filed (this one was filed Mar 3, 2006) | Feb 20, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +2111 days, USPTO patent term adjustment record | Dec 2, 2026 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Dec 2, 2026 | Medium confidence |
This family
| US 6,550,212 | Term ended Nov 2021 | Nov 2021 |
| US 6,869,901 | Term ended Feb 2021 | Feb 2021 |
| US 6,761,006 | Term ended no later than Feb 2021 | no later than Feb 2021 |
| US 7,196,024 | Term ended Feb 2021 | Feb 2021 |
| US 8,334,223 | Term ended no later than Jul 2024 | no later than Jul 2024 |
| US 9,656,445 | this patent no later than Dec 2026 | no later than Dec 2026 |
| Application 11/415,583 | Abandoned 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 |
|---|---|---|---|
| Jun 5, 2006 Reel 17954, frame 949 | Lubker, John W. Ii | Pactiv Corporation | Assignment of Assignor's Interest |
| Jan 28, 2011 Reel 25712, frame 153 | Pactiv Corporation; Newspring Industrial Corp.; Prairie Packaging, Inc.; PWP Industries, Inc. | The Bank of New York Mellon, as Collateral Agent | Security Agreement |
| Jan 23, 2013 Reel 29682, frame 44 | Pactiv Corporation | Pactiv LLC | Change of Name |
| Jul 5, 2015 Reel 35977, frame 921 | Pactiv LLC | Kingspan Insulation LLC | 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 · 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.
What's changing
Dec 2026
Term ends no later than Dec 2, 2026. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 2111 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Dec 2, 2026. We will not guess the cap.
Citations
7
later US patents cite this one
That is above the median of utility patents granted in 2017 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.