Term ends Mar 14, 2029 · High confidence
20-year base term ends Apr 23, 2028
Filed Apr 23, 2008 as application 12/150,237 · Granted Mar 29, 2011
Base term plus 325 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Apr 23, 2008
Apr 23, 2008
Term ends
Mar 14, 2029
Mar 14, 2029
Granted
Mar 29, 2011
Mar 29, 2011
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
325
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.
15
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 325 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 Apr 23, 2008, when this application, 12/150,237, was filed | Apr 23, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +325 days, USPTO patent term adjustment record | Mar 14, 2029 | 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 | Mar 14, 2029 | High confidence |
This family
| US 8,576,381 | In force Mar 2031 | Mar 2031 |
| US 7,826,067 | In force Oct 2028 | Oct 2028 |
| US 8,619,126 | In force Sep 2031 | Sep 2031 |
| US 7,894,078 | In force Oct 2028 | Oct 2028 |
| Application 12/150,239 | Abandoned not computed | not computed |
| US 7,916,309 | this patent Mar 2029 | Mar 2029 |
| Application PCT/US2008/012947 | PCT application no patent term | no patent term |
| US 8,514,268 | In force Mar 2030 | Mar 2030 |
8 of 15 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 |
|---|---|---|---|
| Jul 28, 2008 Reel 21317, frame 563 | Graff, Emilio; Gharib, Morteza; Pereira, Francisco | California Institute of Technology | 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
Mar 2029
Term ends Mar 14, 2029. No further fees fall due before then
Note
The 325 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
21
later US patents cite this one
That is above the median of utility patents granted in 2011 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.