Lapsed Nov 17, 2021 on the fee record · High confidence
20-year base term ends Apr 5, 2027
Third maintenance fee unpaid; grace period ended.
Filed Apr 5, 2007 as application 11/696,736 · Granted Nov 17, 2009
Base term, 20 years from filing, plus 150 days of patent term adjustment (USPTO delay)
Today
Lapsed Nov 17, 2021
2007
2027
Clock starts
Apr 5, 2007
Apr 5, 2007
No longer in force
Nov 17, 2021
Nov 17, 2021
Granted
Nov 17, 2009
Nov 17, 2009
Term would have run to
Sep 2, 2027
Sep 2, 2027
base term
patent term adjustment
after the term ends
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
150
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
13
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Sep 2, 2027: its 20-year base term plus 150 days of term adjustment for prosecution delay. 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 Apr 5, 2007, when this application, 11/696,736, was filed | Apr 5, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +150 days, USPTO patent term adjustment record | Sep 2, 2027 | 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 | 2 of 3 maintenance fees paid | lapsed Nov 17, 2021 | High confidence |
| Computed term end | The steps above, in order | Nov 17, 2021 | High confidence |
This family
| US 7,902,066 | Lapsed on the fee record Mar 2023 | Mar 2023 |
| US 7,566,656 | In force Jan 2027 | Jan 2027 |
| US 7,855,143 | In force Dec 2028 | Dec 2028 |
| US 7,829,422 | Lapsed on the fee record Nov 2022 | Nov 2022 |
| Application 11/672,971 | Abandoned not computed | not computed |
| US 7,618,873 | this patent Nov 2021 | Nov 2021 |
| US 8,450,832 | In force Jul 2028 | Jul 2028 |
| US 7,595,237 | In force Apr 2027 | Apr 2027 |
8 of 13 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 |
|---|---|---|---|
| Apr 9, 2007 Reel 19128, frame 978 | Sarkar, Manju; Verma, Purakh Raj | Chartered Semiconductor Manufacturing, Ltd. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 150 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median 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.