Generac Power Systems, Inc.

90 patents currently held · Updated Nov 14, 2026

88 more in force are now held by other companies

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

Recorded under 4 name spellings.

Ending by 2030

Apr 2027

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 25, 2026
The maintenance fee for Battery-Powered Debris Blower (US 10,327,392) comes due Dec 25, 2026. Unpaid by Jun 25, 2027, it lapses early.
2 fees due Jan 4 to 25, 2027 · next Jan 4
3 fees due Mar 10 to 29, 2027 · next Mar 10
1 fee due Apr 17, 2027
The maintenance fee for Systems and Methods for Increasing Output Current Quality, Output Power, and Reliability of Grid-Interactive Inverters (US 11,791,633) comes due Apr 17, 2027. Unpaid by Oct 18, 2027, it lapses early.
1 fee due May 28, 2027
The maintenance fee for Load Shed System (US 11,831,197) comes due May 28, 2027. Unpaid by Nov 29, 2027, it lapses early.
1 fee due Jun 22, 2027
The maintenance fee for Single Point Engine Control Interface (US 9,217,410) comes due Jun 22, 2027. Unpaid by Dec 22, 2027, it lapses early.
2 fees due Jul 5 to 14, 2027 · next Jul 5
5 fees due Aug 4 to 20, 2027 · next Aug 4
1 fee due Sep 26, 2027
The maintenance fee for Fuel Bypass System for Gaseous-Fueled Engine (US 11,939,906) comes due Sep 26, 2027. Unpaid by Mar 27, 2028, it lapses early.
1 fee due Oct 9, 2027
The maintenance fee for Smart Current Transformer System (US 11,953,576) comes due Oct 9, 2027. Unpaid by Apr 10, 2028, it lapses early.
1 fee due Nov 12, 2027
The maintenance fee for Systems and Methods for Increasing Output Current Quality, Output Power, and Reliability of Grid-Interactive Inverters (US 10,651,724) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

3 of the patents on this record were granted since Aug 16, 2026
1 term has ended since Aug 16, 2026

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 7,402,766	Panel Transfer Switch In force Term ends Apr 10, 2027 · High confidence	In force	Term ends Apr 10, 2027	High confidence
US D750,139	Water Pump Primer Body In force Term ends Feb 23, 2030 · High confidence	In force	Term ends Feb 23, 2030	High confidence
US 8,294,431	Method of Controlling a Variable Speed Constant Frequency Generator In force Term ends Jul 2, 2030 · High confidence	In force	Term ends Jul 2, 2030	High confidence
US D775,052	Auxiliary Fuel Tank In force Term ends Dec 27, 2030 · High confidence	In force	Term ends Dec 27, 2030	High confidence
US D775,053	Auxiliary Fuel Tank Without Sidewalls In force Term ends Dec 27, 2030 · High confidence	In force	Term ends Dec 27, 2030	High confidence
US D783,634	Display Screen with Icon In force Term ends Apr 11, 2032 · High confidence	In force	Term ends Apr 11, 2032	High confidence
US 11,022,339	Flameless Heating System In force Term ends Apr 27, 2032 · Medium confidence	In force	Term ends Apr 27, 2032	Medium confidence
US 11,275,398	DC Microgrid for Interconnecting Distributed Electricity Generation, Loads, and Storage In force Term ends May 25, 2032 · High confidence	In force	Term ends May 25, 2032	High confidence
US 9,263,936	Systems and Methods for Increasing Output Current Quality, Output Power, and Reliability of Grid-Interactive Inverters In force Term ends Jul 11, 2032 · High confidence	In force	Term ends Jul 11, 2032	High confidence
US 9,698,668	Systems and Methods for Increasing Output Current Quality, Output Power, and Reliability of Grid-Interactive Inverters In force Ends no later than Jul 11, 2032 · Medium confidence	In force	Ends no later than Jul 11, 2032	Medium confidence

10 of 90 patents shown.

Pro members see all 90.

Pro members: see all 90 patents

Also on record, not counted in the 90: 88 patents in force now held by others · 31 lapsed for an unpaid fee · 56 ended at full term · 1 past the fee grace period · 1 surrendered on reissue. 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.

Export every term end as CSV · Pro

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.

9 pending · 11 abandoned

List them