Term ends Jul 13, 2031 · High confidence
20-year base term ends Jan 20, 2031
Held by Chdi Foundation, Inc.
Filed Oct 16, 2012 as application 13/575,019 · Granted Nov 11, 2014
Base term plus 174 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Jan 20, 2011
Jan 20, 2011
Term ends
Jul 13, 2031
Jul 13, 2031
Granted
Nov 11, 2014
Nov 11, 2014
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
174
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.
2
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 174 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 Jan 20, 2011, when application PCT/US2011/021890, the earliest non-provisional in its chain, was filed (this one was filed Oct 16, 2012) | Jan 20, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +174 days, USPTO patent term adjustment record | Jul 13, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 13, 2031 | High confidence |
This family
| Application PCT/US2011/021890 | PCT application no patent term | no patent term |
| US 8,883,785 | this patent Jul 2031 | Jul 2031 |
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 |
|---|---|---|---|
| Oct 17, 2012 Reel 29148, frame 755 | Dominguez, Celia; Toledo-sherman, Leticia M. | Chdi Foundation, Inc. | Assignment of Assignor's Interest |
| Oct 17, 2012 Reel 29148, frame 880 | Winkler Dirk | Evotec AG | Assignment of Assignor's Interest |
| Oct 17, 2012 Reel 29148, frame 884 | Evotec (UK) Ltd. | Chdi Foundation, Inc. | Assignment of Assignor's Interest |
| Oct 17, 2012 Reel 29148, frame 889 | Evotec AG | Chdi Foundation, Inc. | Assignment of Assignor's Interest |
| Oct 24, 2012 Reel 29208, frame 804 | Brookfield, Frederick; De Aguiar Pena, Paula C. | Evotec (UK) Ltd. | 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
Jul 2031
Term ends Jul 13, 2031. No further fees fall due before then
Note
The 174 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
20
later US patents cite this one
That is top 25% of utility patents granted in 2014 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.