Collateral for a security interest recorded Aug 19, 2022 (JPMorgan Chase Bank, N.A.).
Term ends Dec 6, 2026 · High confidence
20-year base term ended Apr 26, 2025
Held by MKS Instruments, Inc.
Filed Apr 26, 2005 as application 11/114,388 · Granted Sep 30, 2008
Base term plus 589 days of patent term adjustment (USPTO delay)
Today
2005
2026
Clock starts
Apr 26, 2005
Apr 26, 2005
Term ends
Dec 6, 2026
Dec 6, 2026
Granted
Sep 30, 2008
Sep 30, 2008
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
589
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
2
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 589 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Apr 26, 2005, when this application, 11/114,388, was filed | Apr 26, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +589 days, USPTO patent term adjustment record | Dec 6, 2026 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 6, 2026 | High confidence |
This family
| US 7,428,913 | this patent Dec 2026 | Dec 2026 |
| Application PCT/US2006/014789 | PCT application no patent term | no patent term |
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 26, 2005 Reel 16510, frame 841 | Benson, Richard A. | MKS Instruments, Inc. | Assignment of Assignor's Interest |
| May 4, 2016 reel/frame not recorded | MKS Instruments, Inc.; Newport Corporation | Barclays Bank PLC | Security Agreement |
| May 4, 2016 Reel 38663, frame 265 | MKS Instruments, Inc.; Newport Corporation | Deutsche Bank AG New York Branch | Security Agreement |
| May 4, 2016 Reel 38663, frame 139 | MKS Instruments, Inc.; Newport Corporation | Barclays Bank PLC; Barclays Bank PLC | Security Agreement |
| Feb 1, 2019 Reel 48211, frame 312 | Electro Scientific Industries, Inc.; MKS Instruments, Inc.; Newport Corporation | Barclays Bank PLC, as Collateral Agent | Patent Security Agreement (ABL) |
| Feb 1, 2019 reel/frame not recorded | Deutsche Bank AG New York Branch | MKS Instruments, Inc. | Release of Security Interest |
| Feb 1, 2019 reel/frame not recorded | Deutsche Bank AG New York Branch | Newport Corporation | Release of Security Interest |
| Feb 1, 2019 Reel 48226, frame 95 | Deutsche Bank AG New York Branch | MKS Instruments, Inc.; Newport Corporation | Release of Security Interest |
| Jan 14, 2021 Reel 55668, frame 687 | Electro Scientific Industries, Inc.; MKS Instruments, Inc.; Newport Corporation | Barclays Bank PLC, as Collateral Agent | Corrective Assignment to Correct the Remove U.S. Patent NO.7,919,646 Previously Recorded on Reel 048211 Frame 0312. Assignor(S) Hereby Confirms the Patent Security Agreement (ABL). |
| Aug 19, 2022 Reel 61572, frame 69 | MKS Instruments, Inc.; Newport Corporation; Electro Scientific Industries, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest |
| Aug 24, 2022 Reel 63009, frame 1 | Barclays Bank PLC | MKS Instruments, Inc.; Newport Corporation; Electro Scientific Industries, Inc. | Release of Security Interest |
| Aug 24, 2022 reel/frame not recorded | Barclays Bank PLC | MKS Instruments, Inc. | Release of Security Interest |
| Aug 24, 2022 reel/frame not recorded | Barclays Bank PLC | Newport Corporation | Release of Security Interest |
| Aug 24, 2022 reel/frame not recorded | Barclays Bank PLC | Electro Scientific Industries, Inc. | Release of Security 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
Dec 2026
Term ends Dec 6, 2026. No further fees fall due before then
Note
The 589 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
32
later US patents cite this one
That is top 25% of utility patents granted in 2008 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.