Lapsed Jul 30, 2025 on the fee record · High confidence
20-year base term ends Jul 16, 2029
Third maintenance fee unpaid; grace period ended.
Filed Jul 16, 2009 as application 12/504,553 · Granted Jul 30, 2013
Base term, 20 years from filing, plus 652 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 30, 2025
2009
2031
Clock starts
Jul 16, 2009
Jul 16, 2009
No longer in force
Jul 30, 2025
Jul 30, 2025
Granted
Jul 30, 2013
Jul 30, 2013
Term would have run to
Apr 29, 2031
Apr 29, 2031
base term
patent term adjustment
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
652
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.
7
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 Apr 29, 2031: its 20-year base term plus 652 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 Jul 16, 2009, when this application, 12/504,553, was filed | Jul 16, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +652 days, USPTO patent term adjustment record | Apr 29, 2031 | 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 Jul 30, 2025 | High confidence |
| Computed term end | The steps above, in order | Jul 30, 2025 | High confidence |
This family
| US 8,496,957 | this patent Jul 2025 | Jul 2025 |
| Application PCT/US2009/051078 | PCT application no patent term | no patent term |
| Application PCT/US2009/067552 | PCT application no patent term | no patent term |
| US 8,575,122 | In force May 2030 | May 2030 |
| US 9,066,855 | Lapsed on the fee record Jun 2023 | Jun 2023 |
| US 9,808,460 | Lapsed on the fee record Nov 2021 | Nov 2021 |
| Application 14/795,825 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Sep 17, 2009 Reel 23248, frame 136 | Lichter, Jay; Vollrath, Benedikt; Duron, Sergio G.; Piu, Fabrice; Dellamary, Luis A.; Ye, Qiang; Lebel, Carl; Trammel, Andrew M.; Scaife, Michael Christopher | Otonomy, Inc. | Assignment of Assignor's Interest |
| Sep 17, 2009 Reel 23248, frame 154 | Harris, Jeffrey P. | The Regents of the University of California | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
The 652 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
60
later US patents cite this one
That is top 10% of utility patents granted in 2013 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.