Gridscale Solutions, LLC

44 patents currently held · Updated Nov 14, 2026

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

Ending by 2030

Sep 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 Dec 2, 2026
The maintenance fee for Variable Duty Cycle Switching With Imposed Delay (US 9,048,740) comes due Dec 2, 2026. Unpaid by Jun 2, 2027, it lapses early.
1 fee due Jan 28, 2027
The maintenance fee for Apparatus for Converting Direct Current to Alternating Current Using a Frequency Converter (US 9,093,919) comes due Jan 28, 2027. Unpaid by Jul 28, 2027, it lapses early.
1 fee due Apr 13, 2027
The maintenance fee for System and Method for Establishing Communication with an Array of Inverters (US 9,160,408) comes due Apr 13, 2027. Unpaid by Oct 13, 2027, it lapses early.
1 fee due May 19, 2027
The maintenance fee for System and Method for Establishing Communication with an Array of Inverters (US 10,483,795) comes due May 19, 2027. Unpaid by Nov 19, 2027, it lapses early.
2 fees due Jun 24 to 29, 2027 · next Jun 24
1 fee due Jul 7, 2027
The maintenance fee for Converter Topologies and Control (US 10,530,276) comes due Jul 7, 2027. Unpaid by Jan 7, 2028, it lapses early.
1 fee due Sep 1, 2027
The maintenance fee for Device, System, and Method for Communicating with a Power Inverter Using Power Line Communications (US 9,276,635) comes due Sep 1, 2027. Unpaid by Mar 1, 2028, it lapses early.
1 fee due Oct 7, 2027
The maintenance fee for Photovoltaic Management and Module-Level Power Electronics (US 10,615,742) comes due Oct 7, 2027. Unpaid by Apr 7, 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.

Patent	Title	Status	Expires	Confidence
US 9,806,628	Apparatus and Method for Controlling DC-AC Power Conversion In force Term ends Sep 21, 2029 · High confidence	In force	Term ends Sep 21, 2029	High confidence
US 9,722,504	Apparatus for Converting Direct Current to Alternating Current Using Multiple Converters In force Term ends Sep 30, 2029 · High confidence	In force	Term ends Sep 30, 2029	High confidence
US 8,359,176	Method and Apparatus for Determining an Operating Voltage for Preventing Photovoltaic Cell Reverse Breakdown During Power Conversion In force Term ends Oct 16, 2029 · High confidence	In force	Term ends Oct 16, 2029	High confidence
US 7,925,459	Method and Apparatus for Determining an Operating Voltage for Preventing Photovoltaic Cell Reverse Breakdown During Power Conversion In force Term ends Oct 27, 2029 · High confidence	In force	Term ends Oct 27, 2029	High confidence
US 9,225,256	Apparatus and Method for Controlling Dc-Ac Power Conversion In force Term ends Nov 9, 2029 · High confidence	In force	Term ends Nov 9, 2029	High confidence
US 9,093,919	Apparatus for Converting Direct Current to Alternating Current Using a Frequency Converter In force Term ends Jan 29, 2030 · High confidence	In force	Term ends Jan 29, 2030	High confidence
US 8,451,638	Power Converter with Reverse Recovery Avoidance In force Term ends Mar 1, 2030 · High confidence	In force	Term ends Mar 1, 2030	High confidence
US 8,120,933	Power Converter with Reverse Recovery Avoidance In force Term ends Jun 19, 2030 · High confidence	In force	Term ends Jun 19, 2030	High confidence
US 9,887,639	Communication Within A Power Inverter Using Transformer Voltage Frequency In force Term ends Jul 8, 2030 · High confidence	In force	Term ends Jul 8, 2030	High confidence
US 8,107,516	Power Line Communications Apparatus In force Term ends Aug 27, 2030 · High confidence	In force	Term ends Aug 27, 2030	High confidence

10 of 44 patents shown.

Pro members see all 44.

Pro members: see all 44 patents

Also on record, not counted in the 44: 1 lapsed for an unpaid fee. List them

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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