Etherwhere Corporation

10 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 3 name spellings.

Ending by 2030

Dec 2029

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

1 fee due Jun 8, 2027
The maintenance fee for Method and apparatus for determining device location (US 9,207,329) comes due Jun 8, 2027. Unpaid by Dec 8, 2027, it lapses early.
1 fee due Nov 12, 2027
The maintenance fee for Tdoa-Based Positioning System Using Terrestrial Wireless Signal Sources (US 10,649,092) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Showing 1 to 10 of 10

Patent	Title	Status	Expires	Confidence
US 10,948,565	System framework for mobile device location In force Term ends Dec 23, 2029 · From the USPTO record	In force	Term ends Dec 23, 2029	From the USPTO record
US 8,378,886	Signal processing techniques for improving the sensitivity of GPS receivers In force Term ends May 21, 2030 · From the USPTO record	In force	Term ends May 21, 2030	From the USPTO record
US 7,994,981	System framework for mobile device location In force Term ends Sep 7, 2030 · From the USPTO record	In force	Term ends Sep 7, 2030	From the USPTO record
US 10,126,429	Method and apparatus for determining device location In force Ends no later than Mar 15, 2033 · From the USPTO record	In force	Ends no later than Mar 15, 2033	From the USPTO record
US 9,977,131	Fast fix using perfect reference in a satellite-based positioning system In force Term ends Oct 14, 2033 · From the USPTO record	In force	Term ends Oct 14, 2033	From the USPTO record
US 10,838,072	Fast fix using a perfect reference in a satellite-based positioning system In force Term ends Feb 26, 2034 · From the USPTO record	In force	Term ends Feb 26, 2034	From the USPTO record
US 9,207,329	Method and apparatus for determining device location In force Term ends Jun 4, 2034 · From the USPTO record	In force	Term ends Jun 4, 2034	From the USPTO record
US 10,254,408	TDOA-Based positioning system using terrestrial wireless signal sources In force Term ends Jan 12, 2036 · High confidence	In force	Term ends Jan 12, 2036	High confidence
US 10,649,092	Tdoa-Based Positioning System Using Terrestrial Wireless Signal Sources In force Term ends Jan 12, 2036 · High confidence	In force	Term ends Jan 12, 2036	High confidence
US 12,050,274	Tdoa-Based Positioning System Using Terrestrial Wireless Signal Sources In force Term ends Jan 12, 2036 · High confidence	In force	Term ends Jan 12, 2036	High confidence

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

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Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

1 pending · 7 no status recorded

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