Term ends Oct 16, 2035 · High confidence

Computed 20-year base term

Held by Sonostik LLC

Filed Oct 16, 2015 as application 14/885,603 · Granted Dec 4, 2018

Base term, 20 years from filing

Today

20 years from filing

Term ends Oct 16, 2035

2015 2035

Clock starts
Oct 16, 2015

Term ends
Oct 16, 2035

Granted
Dec 4, 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.

None

Terminal disclaimer

No disclaimer on this record.

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.

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. 2 of 3 maintenance fees are 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 Oct 16, 2015, when this application, 14/885,603, was filed	Oct 16, 2035	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	None on record	no cap applied	High 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	Oct 16, 2035	High confidence

This family

US 10,143,826	this patent Oct 2035	Oct 2035
US 10,441,756	In force Feb 2034	Feb 2034
US 11,497,897	In force Mar 2037	Mar 2037
US 12,515,021	In force Oct 2035	Oct 2035
Application 19/412,291	Pending not computed	not computed

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
Jun 9, 2017 Reel 42664, frame 595	Stancampiano, Alfred P.; Fortunate, Alan D.; Fogel, Richard L.	Sonostik LLC	Assignment of Assignor's Interest
Aug 2, 2018 Reel 46541, frame 852	Castro, Nathan J.; Holmes, Benjamin B.; Sikka, Neal K.; Almansouri, Hawaa; Corman, Adam	The George Washington University	Assignment of Assignor's Interest
Aug 2, 2018 Reel 46732, frame 479	The George Washington University	Sonostik LLC	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

Oct 2035

Term ends Oct 16, 2035. Maintenance fees still fall due before then

Citations

later US patents cite this one

That is top 10% 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.

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