Also listed on Peroxychem LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jan 3, 2035 · High confidence
20-year base term ends Nov 11, 2034
Held by Evonik Corporation
Filed Nov 11, 2014 as application 14/538,119 · Granted May 23, 2017
Base term plus 53 days of patent term adjustment (USPTO delay)
Today
2014
2035
Clock starts
Nov 11, 2014
Nov 11, 2014
Term ends
Jan 3, 2035
Jan 3, 2035
Granted
May 23, 2017
May 23, 2017
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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.
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.
This patent's term runs 53 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 Nov 11, 2014, when this application, 14/538,119, was filed | Nov 11, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +53 days, USPTO patent term adjustment record | Jan 3, 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 3, 2035 | High confidence |
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 |
|---|---|---|---|
| Nov 11, 2014 Reel 34145, frame 719 | Block, Philip A. | FMC Corporation | Assignment of Assignor's Interest |
| Nov 11, 2014 Reel 34145, frame 817 | FMC Corporation | Peroxychem LLC | Assignment of Assignor's Interest |
| Oct 21, 2015 Reel 36847, frame 594 | Peroxychem LLC | Bank of America, N.A., as Administrative Agent | Security Interest |
| Oct 2, 2019 Reel 50605, frame 305 | Peroxychem LLC | Barclays Bank PLC, as Administrative Agent | Security Interest |
| Oct 2, 2019 Reel 50606, frame 329 | Bank of America, N.A., as Agent | Peroxychem LLC | Release of Security Interest |
| Feb 3, 2020 Reel 51777, frame 957 | Barclays Bank PLC, as Administrative Agent | Peroxychem LLC | Release of Security Interest in Patents Recorded at R/F 050605/0305 |
| Sep 16, 2022 Reel 61456, frame 699 | Peroxychem LLC | Evonik Active Oxygens, LLC | Change of Name |
| May 11, 2023 Reel 63627, frame 498 | Peroxychem LLC | Evonik Active Oxygens, LLC | Corrective Assignment to Correct the Assignee's Address Previously Recorded at Reel: 061456 Frame: 0699. Assignor(S) Hereby Confirms the Assignment. |
| May 12, 2023 Reel 63633, frame 922 | Evonik Active Oxygens, LLC | Evonik Active Oxygens, LLC | Change of Address |
| Oct 24, 2024 Reel 69004, frame 202 | Evonik Active Oxygens, LLC | Evonik Corporation | 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.
What's changing
Jan 2035
Term ends Jan 3, 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
5
later US patents cite this one
That is above the median 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.