Term ends Jun 19, 2038 · High confidence

Computed 20-year base term

Held by Plug Power Inc.

Filed Mar 17, 2020 as application 16/820,776 · Granted May 17, 2022

Base term plus 47 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Jun 19, 2038

2018 2038

Clock starts
May 3, 2018

Term ends
Jun 19, 2038

Granted
May 17, 2022

base term patent term adjustment fee events 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

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

1 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.

Family applications on record here

Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term runs 47 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts May 3, 2018, when application 15/969,876, the earliest non-provisional in its chain, was filed (this one was filed Mar 17, 2020)	May 3, 2038	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+47 days, USPTO patent term adjustment record	Jun 19, 2038	High confidence
Terminal disclaimer cap	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	1 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Jun 19, 2038	High confidence

This family

US 10,615,445	In force May 2038	May 2038
Application PCT/US2019/030328	PCT application no patent term	no patent term
US 11,335,940	this patent Jun 2038	Jun 2038

The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.

Recorded	Assignor	Assignee	Conveyance
Mar 17, 2020 Reel 52135, frame 502	Carlstrom, JR., Charles M.; Cacioppo, Michael Anthony; D'aleo, James; Elder, Charles	Plug Power Inc.	Assignment of Assignor's Interest
Apr 28, 2025 Reel 71084, frame 264	Plug Power Inc.; Applied Cryo Technologies, Inc.; Plug Power Hydrogen Holdings, Inc.; United Hydrogen Group Inc.; Alloy Custom Products, LLC; Joule Processing LLC; Peachtree Renewables, LLC; Plug Project Holding Co., LLC; Hypulsion U.S. Holding, Inc.	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Security Interest
Nov 25, 2025 Reel 73036, frame 448	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Plug Power, Inc.; Plug Power Hydrogen Holdings, Inc.; United Hydrogen Group Inc.; Plug Project Holding Co., LLC; Peachtree Renewables, LLC; Joule Processing LLC; Applied Cryo Technologies, Inc.; Alloy Custom Products, LLC; Hypulsion U.S. Holding, Inc.	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Plug Power, Inc.	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Plug Power Hydrogen Holdings, Inc.	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	United Hydrogen Group Inc.	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Plug Project Holding Co., LLC	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Peachtree Renewables, LLC	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Joule Processing LLC	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Applied Cryo Technologies, Inc.	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Alloy Custom Products, LLC	Release of Security Interest
Nov 25, 2025 reel/frame not recorded	Ya II PN, Ltd., in Its Capacity as Collateral Agent	Hypulsion U.S. Holding, Inc.	Release of Security Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Jun 2038

Term ends Jun 19, 2038. Maintenance fees still fall due before then

Note

The 47 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

later US patents cite this one

That is below the median of utility patents granted in 2022 in our data, the only group it is compared against. How we rank

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

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

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

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