Lapsed Apr 28, 2023 on the fee record · High confidence
20-year base term ends Dec 7, 2029
Second maintenance fee unpaid; grace period ended.
Held by Evonik Operations GmbH
Filed Dec 7, 2009 as application 12/632,056 · Granted Apr 28, 2015
Base term, 20 years from filing, plus 615 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Apr 28, 2023
2009
2030
Clock starts
Dec 7, 2009
Dec 7, 2009
No longer in force
Apr 28, 2023
Apr 28, 2023
Granted
Apr 28, 2015
Apr 28, 2015
Term would have run to
Oct 17, 2030
Oct 17, 2030
base term
patent term adjustment
after the term ends
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
615
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,575,075.
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.
24
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Oct 17, 2030: its 20-year base term plus 615 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Dec 7, 2009, when this application, 12/632,056, was filed | Dec 7, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +615 days, USPTO patent term adjustment record | Aug 14, 2031 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,575,075) | capped to Oct 17, 2030 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Apr 28, 2023 | High confidence |
| Computed term end | The steps above, in order | Apr 28, 2023 | High confidence |
This family
| Application PCT/US2007/088409 | PCT application no patent term | no patent term |
| US 9,351,488 | Lapsed on the fee record May 2024 | May 2024 |
| US 9,018,142 | this patent Apr 2023 | Apr 2023 |
| US 8,696,986 | Lapsed on the fee record Apr 2026 | Apr 2026 |
| US 8,575,075 | Lapsed on the fee record Nov 2021 | Nov 2021 |
| Application 61/726,297 | Provisional application no patent term | no patent term |
| US 8,865,066 | Lapsed on the fee record Oct 2026 | Oct 2026 |
| US 10,086,743 | Lapsed on the fee record Oct 2022 | Oct 2022 |
8 of 24 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 |
|---|---|---|---|
| Jan 8, 2010 Reel 23753, frame 505 | Rovison, JR., John M.; Huang, Shurong; Pfeffer, Henry A. | FMC Corporation | Assignment of Assignor's Interest |
| Mar 3, 2014 Reel 32379, frame 931 | Peroxychem LLC | Macquarie US Trading LLC | Short Form Patent Security Agreement |
| Mar 31, 2014 Reel 32558, frame 681 | 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 |
| Nov 4, 2015 Reel 36953, frame 766 | Macquarie US Trading LLC, as Collateral Agent | Peroxychem LLC | Release of 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 |
| Mar 17, 2021 Reel 55623, frame 831 | Peroxychem LLC | Evonik Operations GmbH | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 615 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,575,075.
Citations
97
later US patents cite this one
That is top 5% of utility patents granted in 2015 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.