Term ends Apr 4, 2028 · High confidence
20-year base term ended Aug 28, 2023
No current holder resolved from the recorded chain.
Filed Aug 28, 2003 as application 10/651,003 · Granted Mar 20, 2012
Base term plus 1681 days of patent term adjustment (USPTO delay)
Today
2003
2028
Clock starts
Aug 28, 2003
Aug 28, 2003
Term ends
Apr 4, 2028
Apr 4, 2028
Granted
Mar 20, 2012
Mar 20, 2012
base term
patent term adjustment
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
1,681
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
329
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 1681 days past its 20-year base term on prosecution delay. 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 Aug 28, 2003, when this application, 10/651,003, was filed | Aug 28, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1681 days, USPTO patent term adjustment record | Apr 4, 2028 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 4, 2028 | High confidence |
This family
| US 6,716,214 | Term ended Jun 2023 | Jun 2023 |
| US 8,137,386 | this patent Apr 2028 | Apr 2028 |
| US 7,160,300 | Term ended Feb 2024 | Feb 2024 |
| US 7,470,279 | Term ended Apr 2025 | Apr 2025 |
| Application PCT/US2004/010447 | PCT application no patent term | no patent term |
| US 7,662,175 | Term ended Jan 2024 | Jan 2024 |
| US 8,052,724 | Lapsed on the fee record Nov 2023 | Nov 2023 |
| Application PCT/US2004/031860 | PCT application no patent term | no patent term |
8 of 329 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
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
Apr 2028
Term ends Apr 4, 2028. No further fees fall due before then
Note
The 1681 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
301
later US patents cite this one
That is top 5% of utility patents granted in 2012 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.