Term ends Jun 28, 2027 · Medium confidence
20-year base term ends Jun 28, 2027
Why Medium: A parent in the chain could not be resolved.
No current holder resolved from the recorded chain.
Filed Apr 20, 2011 as application 13/091,086 · Granted Jan 10, 2012
Base term, 20 years from filing
Today
2007
2027
Clock starts
Jun 28, 2007
Jun 28, 2007
Term ends
Jun 28, 2027
Jun 28, 2027
Granted
Jan 10, 2012
Jan 10, 2012
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
None
Term adjustment
No prosecution delay on this record.
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.
17
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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jun 28, 2007, when applications 11/824,160 and 11/824,320, the earliest non-provisional applications in its chain, were filed (this one was filed Apr 20, 2011); a parent in its chain could not be resolved (the next row) | Jun 28, 2027 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | 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 | Jun 28, 2027 | Medium confidence |
This family
| US 7,861,008 | In force Dec 2028 | Dec 2028 |
| US 8,041,438 | In force Jan 2030 | Jan 2030 |
| US 8,111,837 | Lapsed on the fee record Feb 2024 | Feb 2024 |
| US 8,171,177 | In force Apr 2028 | Apr 2028 |
| US 8,140,714 | Lapsed on the fee record Mar 2024 | Mar 2024 |
| US 8,095,694 | this patent Jun 2027 | Jun 2027 |
| US 8,694,141 | In force Mar 2028 | Mar 2028 |
| US 8,694,140 | In force Dec 2027 | Dec 2027 |
8 of 17 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
Jun 2027
Term ends Jun 28, 2027. No further fees fall due before then
Citations
38
later US patents cite this one
That is top 25% 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.