Lapsed Mar 17, 2023 on the fee record · High confidence
20-year base term ended Oct 21, 2023
Second maintenance fee unpaid; grace period ended.
Held by Edwards Lifesciences Corporation
Filed Sep 24, 2004 as application 10/948,923 · Granted Mar 17, 2015
Base term, 20 years from filing, plus 1934 days of patent term adjustment (USPTO delay)
Today
Lapsed Mar 17, 2023
2003
2029
Clock starts
Oct 21, 2003
Oct 21, 2003
No longer in force
Mar 17, 2023
Mar 17, 2023
Granted
Mar 17, 2015
Mar 17, 2015
Term would have run to
Feb 5, 2029
Feb 5, 2029
base term
patent term adjustment
after the term ends
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
1,934
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
14
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Feb 5, 2029: its 20-year base term plus 1934 days of term adjustment for prosecution delay. 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 Oct 21, 2003, when application 10/689,872, the earliest non-provisional in its chain, was filed (this one was filed Sep 24, 2004) | Oct 21, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1934 days, USPTO patent term adjustment record | Feb 5, 2029 | 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 | 1 of 3 maintenance fees paid | lapsed Mar 17, 2023 | High confidence |
| Computed term end | The steps above, in order | Mar 17, 2023 | High confidence |
This family
| US 8,460,371 | Term ended Feb 2026 | Feb 2026 |
| US 8,979,923 | this patent Mar 2023 | Mar 2023 |
| Application 10/949,412 | Abandoned not computed | not computed |
| Application 11/685,240 | Abandoned not computed | not computed |
| US 8,864,822 | Lapsed on the fee record Oct 2026 | Oct 2026 |
| US 8,845,723 | Lapsed on the fee record Sep 2026 | Sep 2026 |
| Application 11/685,241 | Abandoned not computed | not computed |
| US 8,911,461 | In force Mar 2031 | Mar 2031 |
8 of 14 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 15, 2004 Reel 15455, frame 474 | Spence, Paul A; McNamara, Ed; Maguire, Mark | Mitralign, Inc. | Assignment of Assignor's Interest |
| Sep 20, 2012 Reel 28992, frame 635 | General Electric Capital Corporation | Mitralign Inc. | Release of Security Interest |
| Dec 17, 2014 Reel 34660, frame 370 | Mitralign, Inc. | Mitralign, Inc. | Change of Address |
| Apr 19, 2019 Reel 48941, frame 323 | Mitralign, Inc. | Edwards Lifesciences 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 1934 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
411
later US patents cite this one
That is top 1% of utility patents granted in 2015 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.