Term ends no later than Dec 7, 2026 · Medium confidence
20-year base term ended Sep 11, 2023
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by CMC Materials LLC
Filed Feb 17, 2006 as application 10/568,727 · Granted Jul 13, 2010
Base term plus 1183 days of patent term adjustment (USPTO delay)
Today
2003
2026
Clock starts
Sep 11, 2003
Sep 11, 2003
Ends no later than
Dec 7, 2026
Dec 7, 2026
Granted
Jul 13, 2010
Jul 13, 2010
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
1,183
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.
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.
3
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 1183 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. 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 Sep 11, 2003, when application 10/660,379, the earliest non-provisional in its chain, was filed (this one was filed Feb 17, 2006) | Sep 11, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1183 days, USPTO patent term adjustment record | Dec 7, 2026 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Dec 7, 2026 | Medium confidence |
This family
| US 7,485,241 | Term ended Sep 2023 | Sep 2023 |
| US 7,754,098 | this patent no later than Dec 2026 | no later than Dec 2026 |
2 of 3 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 |
|---|---|---|---|
| Feb 16, 2012 Reel 27727, frame 275 | Cabot Microelectronics Corporation | Bank of America, N.A., as Administrative Agent | Notice of Security Interest in Patents |
| Nov 16, 2018 Reel 47587, frame 119 | Bank Of America, N.a. | Cabot Microelectronics Corporation | Release of Security Interest |
| Nov 16, 2018 Reel 47588, frame 263 | Cabot Microelectronics Corporation; Qed Technologies International, Inc.; Flowchem LLC; KMG Electronic Chemicals, Inc.; Mpower Specialty Chemicals LLC | Jpmorgan Chase Bank, N.a. | Security Agreement |
| Jan 13, 2021 Reel 54980, frame 681 | Cabot Microelectronics Corporation | CMC Materials, Inc. | Change of Name |
| Jul 6, 2022 Reel 60592, frame 260 | Jpmorgan Chase Bank, N.a. | Cabot Microelectronics Corporation; Qed Technologies International, Inc.; Flowchem LLC; KMG Electronic Chemicals, Inc.; KMG-Bernuth, Inc.; Mpower Specialty Chemicals LLC; Sealweld (USA), Inc.; International Test Solutions, LLC; CMC Materials, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Cabot Microelectronics Corporation | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Qed Technologies International, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Flowchem LLC | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | KMG Electronic Chemicals, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | KMG-Bernuth, Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Mpower Specialty Chemicals LLC | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | Sealweld (USA), Inc. | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | International Test Solutions, LLC | Release of Security Interest |
| Jul 6, 2022 reel/frame not recorded | Jpmorgan Chase Bank, N.a. | CMC Materials, Inc. | Release of Security Interest |
| Jul 8, 2022 Reel 60613, frame 72 | Entegris, Inc.; Entegris GP, Inc.; Poco Graphite, Inc.; CMC Materials, Inc.; International Test Solutions, LLC; Qed Technologies International, Inc. | Truist Bank, as Notes Collateral Agent | Security Interest |
| Jul 8, 2022 Reel 60615, frame 1 | CMC Materials, Inc.; International Test Solutions, LLC; Qed Technologies International, Inc. | Morgan Stanley Senior Funding, Inc., as Collateral Agent | Security Interest |
| Nov 8, 2023 Reel 65517, frame 783 | CMC Materials, Inc. | CMC Materials LLC | Change of Name |
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
Dec 2026
Term ends no later than Dec 7, 2026. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 1183 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 Dec 7, 2026. We will not guess the cap.
Citations
6
later US patents cite this one
That is below the median of utility patents granted in 2010 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.