Term ends Mar 28, 2030 · Medium confidence
20-year base term ends Jan 8, 2028
Why Medium: A parent in the chain could not be resolved.
Filed Apr 10, 2008 as application 12/081,123 · Granted Apr 11, 2017
Base term plus 810 days of patent term adjustment (USPTO delay)
Today
2008
2030
Clock starts
Jan 8, 2008
Jan 8, 2008
Term ends
Mar 28, 2030
Mar 28, 2030
Granted
Apr 11, 2017
Apr 11, 2017
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
810
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.
8
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 810 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Jan 8, 2008, when application PCT/US2008/000281, the earliest non-provisional in its chain, was filed (this one was filed Apr 10, 2008); a parent in its chain could not be resolved (the next row) | Jan 8, 2028 | 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 | +810 days, USPTO patent term adjustment record | Mar 28, 2030 | 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 | Mar 28, 2030 | Medium confidence |
This family
| Application PCT/US2008/000281 | PCT application no patent term | no patent term |
| US 9,616,108 | this patent Mar 2030 | Mar 2030 |
| US 9,821,031 | In force Apr 2030 | Apr 2030 |
| US 10,188,702 | In force May 2028 | May 2028 |
| US 10,987,407 | In force Mar 2028 | Mar 2028 |
| Application 17/105,484 | Abandoned not computed | not computed |
| Application 18/168,570 | Abandoned not computed | not computed |
| Application 19/072,934 | Pending 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 |
|---|---|---|---|
| Jul 6, 2008 Reel 21196, frame 958 | De Leon, Diva D.; Stanley, Charles | Children's Hospital of Philadelphia | Assignment of Assignor's Interest |
| Jul 6, 2008 Reel 21196, frame 963 | Stoffers, Doris | The Trustees of the University of Pennsylvania | Assignment of Assignor's Interest |
| Feb 19, 2009 Reel 22283, frame 112 | Children's Hospital of Philadelphia | National Institutes of Health (Nih), U.S. Dept. of Health and Human Services (DHHS), U.S. Government | Executive Order 9424, Confirmatory License |
| Oct 5, 2018 Reel 47085, frame 29 | De Leon-crutchlow, Diva; Stanley, Charles | The Children's Hospital of Philadelphia | 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 2030
Term ends Mar 28, 2030. Maintenance fees still fall due before then
Note
The 810 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
29
later US patents cite this one
That is top 25% of utility patents granted in 2017 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.