Collateral for a security interest recorded Jun 24, 2026 (Symbiotic Capital Agency LLC, as Administrative and Collateral Agent).
Term ends Dec 12, 2034 · Medium confidence
20-year base term ends Dec 12, 2034
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,572,499), so the cap could be lower.
Held by Alivecor, Inc.
Filed Dec 28, 2016 as application 15/393,077 · Granted Dec 25, 2018
Base term, 20 years from filing
Today
2014
2034
Clock starts
Dec 12, 2014
Dec 12, 2014
Term ends
Dec 12, 2034
Dec 12, 2034
Granted
Dec 25, 2018
Dec 25, 2018
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,572,499, to Dec 12, 2034. The term already ends on or before that date, so the cap shortened nothing.
2 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.
15
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 Dec 12, 2014, when application 14/569,513, the earliest non-provisional in its chain, was filed (this one was filed Dec 28, 2016) | Dec 12, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,572,499) | resolves to Dec 12, 2034, no earlier than this term, so no change | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 12, 2034 | Medium confidence |
This family
| US 9,420,956 | In force Dec 2034 | Dec 2034 |
| US 9,572,499 | In force no later than Dec 2034 | no later than Dec 2034 |
| US 10,159,415 | this patent Dec 2034 | Dec 2034 |
| US 10,561,321 | In force Dec 2034 | Dec 2034 |
| Application 16/153,403 | Abandoned not computed | not computed |
| US 10,426,359 | In force Dec 2034 | Dec 2034 |
| US 12,453,482 | In force Jan 2035 | Jan 2035 |
| US 11,877,830 | In force Jun 2039 | Jun 2039 |
8 of 15 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 2, 2017 Reel 41444, frame 863 | Gopalakrishnan, Ravi; Korzinov, Lev; Wang, Fei; Thomson, Euan; Srivastava, Nupur; Dawood, Omar; Abuzeid, Iman; Albert, David E. | Alivecor, Inc. | Assignment of Assignor's Interest |
| Jun 24, 2026 Reel 75813, frame 343 | Alivecor, Inc. | Symbiotic Capital Agency LLC, as Administrative and Collateral Agent | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Dec 2034
Term ends Dec 12, 2034. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,572,499, ends no earlier than this term, so it caps nothing.
Citations
21
later US patents cite this one
That is top 25% of utility patents granted in 2018 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.