41 patents currently held

3 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.

38 more records may belong here and await a decision; they are not counted.

The next term ends in Jun 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Jun 2027

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 203120322033203420352036 2037 2038 2039 2040 2041 2042 2043 2044 2045

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

High-Output Atmospheric Water Generator US 11,679,339

Cited by 12 later US patents, top 10% of utility patents granted in 2023 in our data. Protection runs to 2039.

Ends Feb 2039 · High confidence Also notable

Fuel Cell Stack US 10,615,445

Granted 2020. Computed term ends 2038.

Ends May 2038 · High confidence Also notable

Method for Producing Bipolar Plates US 8,470,489

Renewed at every maintenance window since the 2013 grant; no more fees are due before its term ends in 2031.

Ends Aug 2031 · 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 9 to 20, 2026 · next Dec 9
2 fees due Feb 1 to 13, 2027 · next Feb 1
1 fee due Mar 17, 2027
The maintenance fee for Method for Producing Bipolar Plates (US 10,418,648) comes due Mar 17, 2027. Unpaid by Sep 17, 2027, it lapses early.
2 fees due Jul 28 to 30, 2027 · next Jul 28
2 fees due Oct 7 to 9, 2027 · next Oct 7

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 16, 2026

What they patent

The 5 largest of its 34 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Integrated Circuit for Diagnostics	2 in force	to Jun 2042
Method and System for Electrochemically Compressing Gaseous Hydrogen	2 in force	to Nov 2041
Support Structure for Cryogenic Transport Trailer	2 in force	to Feb 2041
Support Structure for Shortened Cryogenic Transport Trailer	2 in force	to Nov 2040
Fuel Cell Stack	2 in force	to Jul 2039

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,531,259	Fuel Cell Cooling and Water Management System In force Term ends Jun 28, 2027 · High confidence	In force	Term ends Jun 28, 2027	High confidence
US 7,915,854	Maximizing Energy Storage Life in a Fuel Cell System Using Active Temperature Compensation In force Term ends Feb 3, 2028 · High confidence	In force	Term ends Feb 3, 2028	High confidence
US 7,867,669	Solid Polymer Electrolyte Composite Membrane Comprising Laser Micromachined Porous Support In force Term ends May 18, 2028 · High confidence	In force	Term ends May 18, 2028	High confidence
US 7,892,689	Pressure Relief Control System for a Fuel Cell System Having a Pressurized Fuel Flow In force Term ends Jul 3, 2029 · High confidence	In force	Term ends Jul 3, 2029	High confidence
US 7,851,096	Humidifying a Reactant Flow of a Fuel Cell System In force Term ends Sep 3, 2029 · High confidence	In force	Term ends Sep 3, 2029	High confidence
US 7,947,405	Solid Polymer Electrolyte Composite Membrane Comprising Porous Ceramic Support In force Term ends Oct 12, 2029 · High confidence	In force	Term ends Oct 12, 2029	High confidence
US 8,349,151	Universal Cell Frame for High-Pressure Water Electrolyzer and Electrolyzer Including the Same In force Term ends Oct 9, 2030 · High confidence	In force	Term ends Oct 9, 2030	High confidence
US 8,470,489	Method for Producing Bipolar Plates held by Plug Power Autonomous Technologies, Inc. In force Term ends Aug 11, 2031 · High confidence	In force	Term ends Aug 11, 2031	High confidence
US 10,418,648	Method for Producing Bipolar Plates held by Plug Power Autonomous Technologies, Inc. In force Term ends Aug 11, 2031 · High confidence	In force	Term ends Aug 11, 2031	High confidence
US 9,620,800	Cell Voltage Monitoring (CVM) Pick-Up Assembly for a Fuel Cell Stack held by Plug Power Autonomous Technologies, Inc. In force Term ends Sep 1, 2031 · Medium confidence	In force	Term ends Sep 1, 2031	Medium confidence

10 of 41 patents shown.

Pro members see all 41.

Pro members: see all 41 patents

Also on record, not counted in the 41: 3 patents in force now held by others · 94 patents ended · 12 applications pending · 66 applications 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

Plug Power Inc.