Term ended Sep 13, 2021 · High confidence
20-year base term ended Mar 17, 2025
Held by Dow Global Technologies LLC
Filed Mar 15, 2006 as application 11/376,971 · Granted Sep 1, 2009
Base term plus 484 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Term ended Sep 13, 2021
2005
2026
Clock starts
Mar 17, 2005
Mar 17, 2005
Term ended
Sep 13, 2021
Sep 13, 2021
Granted
Sep 1, 2009
Sep 1, 2009
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
484
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 7,338,994, US 7,355,089.
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.
49
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 484 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 were paid, so no fee lapse ended it. 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 17, 2005, when application PCT/US2005/008917, the earliest non-provisional in its chain, was filed (this one was filed Mar 15, 2006) | Mar 17, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +484 days, USPTO patent term adjustment record | Jul 14, 2026 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,338,994, US 7,355,089) | capped to Sep 13, 2021 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Sep 13, 2021 | High confidence |
This family
| Application PCT/US2005/008917 | PCT application no patent term | no patent term |
| US 7,897,689 | Term ended Jan 2026 | Jan 2026 |
| US 7,863,379 | In force no later than Nov 2027 | no later than Nov 2027 |
| US 7,803,728 | In force Jun 2027 | Jun 2027 |
| US 7,608,668 | Term ended Jan 2026 | Jan 2026 |
| US 7,582,716 | this patent Sep 2021 | Sep 2021 |
| US 7,355,089 | Term ended Jul 2025 | Jul 2025 |
| US 7,504,347 | Term ended Feb 2026 | Feb 2026 |
8 of 49 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 |
|---|---|---|---|
| Jun 7, 2006 Reel 17741, frame 604 | Liang, Wenbin; Cheung, Yunwa W.; Garnett, IV, John W. | Dow Global Technologies Inc. | Assignment of Assignor's Interest |
| Nov 2, 2017 Reel 44360, frame 554 | Dow Global Technologies Inc. | Dow Global Technologies 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
Note
The 484 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 7,338,994, US 7,355,089.
Citations
68
later US patents cite this one
That is top 25% of utility patents granted in 2009 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.