Term ended May 8, 2025 · High confidence
20-year base term ended Aug 11, 2024
Held by Masimo Corporation
Filed Aug 11, 2004 as application 10/916,236 · Granted Aug 7, 2007
Base term plus 270 days of patent term adjustment (USPTO delay)
Today
Term ended May 8, 2025
2004
2026
Clock starts
Aug 11, 2004
Aug 11, 2004
Term ended
May 8, 2025
May 8, 2025
Granted
Aug 7, 2007
Aug 7, 2007
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
270
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 270 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 Aug 11, 2004, when this application, 10/916,236, was filed | Aug 11, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +270 days, USPTO patent term adjustment record | May 8, 2025 | 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 | May 8, 2025 | 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 | this patent May 2025 | May 2025 |
| US 7,438,683 | Term ended 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 |
|---|---|---|---|
| Dec 16, 2005 Reel 17126, frame 907 | Schurman, Matthew J.; Shakespeare, Walter J. | Glucolight Corporation | Assignment of Assignor's Interest |
| May 27, 2009 Reel 22732, frame 418 | Glucolight Corp. | Houghton, Robert E. | Security Agreement |
| Dec 16, 2009 Reel 23660, frame 132 | Houghton, Robert E. | Glucolight Corp. | Release of Security Interest |
| Mar 24, 2010 Reel 24128, frame 642 | Glucolight Corporation | GLT Acquisition Corp. | Assignment of Assignor's Interest |
| Mar 9, 2016 Reel 38049, frame 74 | Cercacor Laboratories, Inc. | Masimo Corporation | Assignment of Assignor's Interest |
| Jan 25, 2017 Reel 41084, frame 343 | GLT Acquisition Corporation | Masimo Corporation | 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
The 270 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1,147
later US patents cite this one
That is top 1% of utility patents granted in 2007 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.