Term ends May 12, 2034 · Medium confidence
20-year base term ends Mar 13, 2034
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 10,856,847), so the cap could be lower.
Held by Bfly Operations, Inc.
Filed Mar 13, 2014 as application 14/208,281 · Granted Dec 20, 2016
Base term plus 219 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2014
2034
Clock starts
Mar 13, 2014
Mar 13, 2014
Term ends
May 12, 2034
May 12, 2034
Granted
Dec 20, 2016
Dec 20, 2016
base term
patent term adjustment
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
219
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 10,856,847.
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.
10
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 219 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Mar 13, 2014, when this application, 14/208,281, was filed | Mar 13, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +219 days, USPTO patent term adjustment record | Oct 18, 2034 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,856,847) | capped to May 12, 2034 | 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 | May 12, 2034 | Medium confidence |
This family
| US 9,521,991 | this patent May 2034 | May 2034 |
| US 9,327,142 | In force Mar 2034 | Mar 2034 |
| US 10,856,847 | In force no later than May 2034 | no later than May 2034 |
| Application 15/143,369 | Abandoned not computed | not computed |
| US 11,439,364 | In force Mar 2034 | Mar 2034 |
| Application 15/638,343 | Abandoned not computed | not computed |
| US 12,678,137 | In force Mar 2034 | Mar 2034 |
| US 12,076,189 | In force Mar 2034 | Mar 2034 |
8 of 10 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 |
|---|---|---|---|
| May 6, 2014 Reel 32828, frame 135 | Rothberg, Jonathan M.; Fife, Keith G.; Ralston, Tyler S.; Charvat, Gregory L.; Sanchez, Nevada J. | Butterfly Network, Inc. | Assignment of Assignor's Interest |
| Mar 16, 2022 Reel 59369, frame 969 | Butterfly Network, Inc. | Bfly Operations, Inc. | Change of Name |
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
May 2034
Term ends May 12, 2034. Maintenance fees still fall due before then
Note
The 219 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 10,856,847.
Citations
158
later US patents cite this one
That is top 5% of utility patents granted in 2016 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.