Term ends Jul 19, 2028 · High confidence
20-year base term ended May 8, 2026
No current holder resolved from the recorded chain.
Filed Jun 12, 2009 as application 12/483,450 · Granted Jun 9, 2015
Base term plus 803 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
May 8, 2006
May 8, 2006
Term ends
Jul 19, 2028
Jul 19, 2028
Granted
Jun 9, 2015
Jun 9, 2015
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
803
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.
9
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 803 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 May 8, 2006, when application 11/429,250, the earliest non-provisional in its chain, was filed (this one was filed Jun 12, 2009) | May 8, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +803 days, USPTO patent term adjustment record | Jul 19, 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 19, 2028 | High confidence |
This family
| US 8,795,083 | Lapsed on the fee record Aug 2026 | Aug 2026 |
| US 9,050,533 | this patent Jul 2028 | Jul 2028 |
| US 8,353,773 | Term ended May 2026 | May 2026 |
| US 9,050,536 | Term ended May 2026 | May 2026 |
| US 9,839,850 | In force Dec 2026 | Dec 2026 |
| US 9,731,205 | Lapsed on the fee record Aug 2025 | Aug 2025 |
| US 9,895,614 | Lapsed on the fee record Feb 2026 | Feb 2026 |
| US 9,884,256 | Lapsed on the fee record Feb 2026 | Feb 2026 |
8 of 9 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
Jul 2028
Term ends Jul 19, 2028. Maintenance fees still fall due before then
Note
The 803 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
25
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.