Lapsed May 31, 2024 on the fee record · Medium confidence

Computed 20-year base term

Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.

Second maintenance fee unpaid; grace period ended.

Held by Evonik Operations GmbH

Filed Jun 18, 2009 as application 12/519,889 · Granted May 31, 2016

Base term, 20 years from filing, plus 1832 days of patent term adjustment (USPTO delay)

Today

Lapsed May 31, 2024

2007 2032

Clock starts
Dec 20, 2007

No longer in force
May 31, 2024

Granted
May 31, 2016

Term would have run to
Dec 25, 2032

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

1,832

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

Unresolved

Terminal disclaimer

On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.

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.

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 Dec 25, 2032: its 20-year base term plus 1832 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Dec 20, 2007, when application PCT/US2007/088409, the earliest non-provisional in its chain, was filed (this one was filed Jun 18, 2009)	Dec 20, 2027	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+1832 days, USPTO patent term adjustment record	Dec 25, 2032	High confidence
Terminal disclaimer cap	Disclaimer on file (approved), reference document not resolved	no cap applied, and none guessed	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	1 of 3 maintenance fees paid	lapsed May 31, 2024	High confidence
Computed term end	The steps above, in order	May 31, 2024	Medium confidence

This family

Application PCT/US2007/088409	PCT application no patent term	no patent term
US 9,351,488	this patent May 2024	May 2024
US 9,018,142	Lapsed on the fee record 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
Aug 20, 2009 Reel 23123, frame 978	Rovison, John M.; Lapham Iii, Donald; Abraham, Shibu; Homan, Mary	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 55624, frame 360	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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Note

A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed

Note

The 1832 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Open question

A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than May 31, 2024. We will not guess the cap.

Citations

later US patents cite this one

That is above the median of utility patents granted in 2016 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.

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