24 patents currently held

1 more in force is now held by another company

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

The next term ends in Apr 2035. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Apr 2035

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042 204320442045

notable patents fee due within 90 days all others 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

Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Systems, Apparatus, and Methods of Charging Electric Vehicles US 9,592,742

The most cited patent in this portfolio, cited by 56 later US patents, top 10% of utility patents granted in 2017 in our data. Protection runs to 2035.

Ends Jun 2035 · High confidence Also notable

Charging EV Battery Using Parallel Buck and Boost Converters US 11,642,981

The newest of the three, granted 2023. It anchors the portfolio to 2042, later than anything else here.

Ends Aug 2042 · High confidence Also notable

Resilient Charging Station US 11,807,123

The newest of the three, granted 2023. It anchors the portfolio to 2042, later than anything else here.

Ends Dec 2042 · High confidence

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.

2 fees due Dec 6 to 27, 2026 · next Dec 6
1 fee due Feb 6, 2027
The maintenance fee for Systems, Apparatus, and Methods for Electric Power (US 10,369,890) comes due Feb 6, 2027. Unpaid by Aug 6, 2027, it lapses early.
2 fees due Mar 3 to 5, 2027 · next Mar 3
1 fee due Apr 3, 2027
The maintenance fee for Energy Management for Multiple Charging Stations (US 11,772,509) comes due Apr 3, 2027. Unpaid by Oct 4, 2027, it lapses early.
1 fee due May 7, 2027
The maintenance fee for Resilient Charging Station (US 11,807,123) comes due May 7, 2027. Unpaid by Nov 8, 2027, 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.

What they patent

The 5 largest of its 14 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Systems, Apparatus, and Methods of Charging Electric Vehicles	4 in force	to Jun 2035
Resilient Charging Station (2022)	2 in force	to Dec 2042
Resilient Charging Station (2022)	2 in force	to Dec 2042
Energy Management for Multiple Charging Stations	2 in force	to Dec 2042
Energy Management for Connected Charging Stations with Bidirectionality	2 in force	to Dec 2042

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 10,369,890	Systems, Apparatus, and Methods for Electric Power In force Term ends Apr 8, 2035 · High confidence	In force	Term ends Apr 8, 2035	High confidence
US 10,399,461	Methods for Electric Power In force Term ends Apr 8, 2035 · High confidence	In force	Term ends Apr 8, 2035	High confidence
US 11,511,635	Electric Power System In force Term ends Apr 8, 2035 · High confidence	In force	Term ends Apr 8, 2035	High confidence
US 9,592,742	Systems, Apparatus, and Methods of Charging Electric Vehicles In force Term ends Jun 19, 2035 · High confidence	In force	Term ends Jun 19, 2035	High confidence
US D1,060,223	Electric Vehicle Charging Station In force Term ends Feb 4, 2040 · High confidence	In force	Term ends Feb 4, 2040	High confidence
US D1,065,071	Electric Vehicle Charging Station In force Term ends Mar 4, 2040 · High confidence	In force	Term ends Mar 4, 2040	High confidence
US 11,456,605	Autonomous Mobile Power Supply with Task or User Tracking In force Term ends Dec 31, 2040 · High confidence	In force	Term ends Dec 31, 2040	High confidence
US 12,071,031	High-Availability Low-Impact Vehicle Charger In force Term ends Jul 29, 2042 · High confidence	In force	Term ends Jul 29, 2042	High confidence
US 11,642,981	Charging EV Battery Using Parallel Buck and Boost Converters In force Term ends Aug 22, 2042 · High confidence	In force	Term ends Aug 22, 2042	High confidence
US 12,139,039	Charging EV Battery Using Parallel Buck and Boost Converters In force Ends no later than Aug 22, 2042 · Medium confidence	In force	Ends no later than Aug 22, 2042	Medium confidence

10 of 24 patents shown.

Pro members see all 24.

Pro members: see all 24 patents

Also on record, not counted in the 24: 1 patent in force now held by others · 16 applications pending · 1 application abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.

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

Speed Charge, LLC