Term ended Aug 22, 2026 · High confidence
20-year base term ended Mar 3, 2025
Filed Mar 3, 2005 as application 11/071,875 · Granted Oct 21, 2008
Base term plus 537 days of patent term adjustment (USPTO delay)
Today
Term ended Aug 22, 2026
2005
2026
Clock starts
Mar 3, 2005
Mar 3, 2005
Term ended
Aug 22, 2026
Aug 22, 2026
Granted
Oct 21, 2008
Oct 21, 2008
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
537
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.
137
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 537 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Mar 3, 2005, when this application, 11/071,875, was filed | Mar 3, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +537 days, USPTO patent term adjustment record | Aug 22, 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Aug 22, 2026 | High confidence |
This family
| US 6,920,345 | Term ended Sep 2023 | Sep 2023 |
| Application 60/485,761 | Provisional application no patent term | no patent term |
| US 6,970,792 | Term ended Jan 2024 | Jan 2024 |
| Application 60/540,082 | Pending not computed | not computed |
| Application PCT/US2004/021352 | PCT application no patent term | no patent term |
| US 7,254,429 | Term ended May 2025 | May 2025 |
| US 7,438,683 | this patent Aug 2026 | Aug 2026 |
| Application 60/671,007 | Provisional application no patent term | no patent term |
8 of 137 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 |
|---|---|---|---|
| Sep 11, 2008 Reel 21521, frame 792 | Al-ali, Ammar; Kiani, Massi E.; Weber, Walter M. | Masimo Corporation | Assignment of Assignor's Interest |
| Apr 29, 2014 Reel 32784, frame 864 | Masimo Corporation; Masimo Americas, Inc. | Jpmorgan Chase Bank, National Association | Assignment of Assignor's Interest |
| May 27, 2014 Reel 33032, frame 426 | Masimo Americas, Inc.; Masimo Corporation | Jpmorgan Chase Bank, National Association | Corrective Assignment to Correct the Nature of Conveyance Previously Recorded at Reel: 032784 Frame: 0864. Assignor(S) Hereby Confirms the Security Agreement. |
| Nov 7, 2018 Reel 47443, frame 109 | Jpmorgan Chase Bank, National Association | Masimo Corporation; Masimo Americas, Inc. | Release of Security Interest |
| Nov 7, 2018 reel/frame not recorded | Jpmorgan Chase Bank, National Association | Masimo Corporation | Release of Security Interest |
| Nov 7, 2018 reel/frame not recorded | Jpmorgan Chase Bank, National Association | Masimo Americas, 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
Note
The 537 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
955
later US patents cite this one
That is top 1% 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.