Term ends Mar 4, 2029 · High confidence
20-year base term ends Mar 4, 2029
Held by Masimo Corporation
Filed May 13, 2015 as application 14/711,610 · Granted Aug 6, 2019
Base term plus 918 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2009
2029
Clock starts
Mar 4, 2009
Mar 4, 2009
Term ends
Mar 4, 2029
Mar 4, 2029
Granted
Aug 6, 2019
Aug 6, 2019
base term
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
918
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,571,617, US 9,060,721.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 918 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 2 maintenance fees is paid so far. 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 4, 2009, when application 12/397,593, the earliest non-provisional in its chain, was filed (this one was filed May 13, 2015) | Mar 4, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +918 days, USPTO patent term adjustment record | Sep 8, 2031 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,571,617, US 9,060,721) | capped to Mar 4, 2029 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 4, 2029 | 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 | 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 |
|---|---|---|---|
| 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
Mar 2029
Term ends Mar 4, 2029. Maintenance fees still fall due before then
Note
The 918 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,571,617, US 9,060,721.
Citations
654
later US patents cite this one
That is top 1% of utility patents granted in 2019 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.