Term ends Oct 20, 2035 · High confidence
20-year base term ends Aug 28, 2035
Held by Chdi Foundation, Inc.
Filed Feb 27, 2017 as application 15/507,208 · Granted Nov 19, 2019
Base term plus 53 days of patent term adjustment (USPTO delay)
Today
2015
2035
Clock starts
Aug 28, 2015
Aug 28, 2015
Term ends
Oct 20, 2035
Oct 20, 2035
Granted
Nov 19, 2019
Nov 19, 2019
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
53
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
6
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 53 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 Aug 28, 2015, when application PCT/US2015/047407, the earliest non-provisional in its chain, was filed (this one was filed Feb 27, 2017) | Aug 28, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +53 days, USPTO patent term adjustment record | Oct 20, 2035 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 20, 2035 | High confidence |
This family
| Application PCT/US2015/047407 | PCT application no patent term | no patent term |
| US 10,479,802 | this patent Oct 2035 | Oct 2035 |
| US 11,059,836 | In force no later than Aug 2035 | no later than Aug 2035 |
| Application 17/325,038 | Abandoned not computed | not computed |
| Application 17/558,397 | Abandoned not computed | not computed |
| US 12,258,355 | In force Oct 2035 | Oct 2035 |
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 |
|---|---|---|---|
| Apr 27, 2017 Reel 42165, frame 498 | Dominguez, Celia; Wityak, John; Bard, Jonathan; Kiselyov, Alex | Chdi Foundation, Inc. | Assignment of Assignor's Interest |
| Apr 27, 2017 Reel 42165, frame 537 | Brown, Christopher John; Galan, Sebastien Rene Gabriel; Prime, Michael Edward; Giles, Paul Richard; Gadouleau, Elise Luciennen Paulette; Krulle, Thomas Martin; Clark-frew, Daniel; Johnson, Peter David; Coe, Samuel; Hayes, Sarah | Evotec (UK) Ltd. | Assignment of Assignor's Interest |
| Apr 27, 2017 Reel 42165, frame 566 | Evotec (UK) Ltd. | Chdi Foundation, Inc. | Assignment of Assignor's Interest |
| Apr 27, 2017 Reel 42165, frame 617 | Schaertl, Sabine; Herrmann, Frank; Grimm, Steffen Kaspar; Kahmann, Jan Dirk; Scheich, Christoph | Evotec AG | Assignment of Assignor's Interest |
| Apr 27, 2017 Reel 42165, frame 665 | Evotec AG | Chdi Foundation, Inc. | Assignment of Assignor's Interest |
| Aug 31, 2021 Reel 57391, frame 233 | Brown, Christopher John; Galan, Sébastien René Gabriel; Prime, Michael Edward; Giles, Paul Richard; Gadouleau, Elise Lucienne Paulette; Krülle, Thomas Martin; Clark-frew, Daniel; Johnson, Peter David; Coe, Samuel; Hayes, Sarah | Evotec (UK) Ltd. | Corrective Assignment to Correct the 5TH Inventor's Name and 2ND Inventor Execution Date Previously Recorded at Reel: 042165 Frame: 0537. Assignor(S) Hereby Confirms the Assignment . |
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
Oct 2035
Term ends Oct 20, 2035. Maintenance fees still fall due before then
Note
The 53 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
14
later US patents cite this one
That is top 25% of utility patents granted in 2019 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.