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Cooling a Horticulture Light Fixture Using an Isolation Chamber

US 11,877,551 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Aug 7, 2026 (Bank of Montreal).

Term ends Jun 26, 2032 · High confidence

Held by Hgci LLC
Filed Mar 22, 2021 as application 17/207,916 · Granted Jan 23, 2024
Base term, 20 years from filing
Today
20 years from filing
2012 2032
Clock starts
Jun 26, 2012
Term ends
Jun 26, 2032
Granted
Jan 23, 2024
base term Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,473,317, to Jun 26, 2032. The term already ends on or before that date, so the cap shortened nothing.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
8
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 2 maintenance fees are 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Jun 26, 2012, when application 13/533,189, the earliest non-provisional in its chain, was filed (this one was filed Mar 22, 2021)Jun 26, 2032High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 10,473,317)resolves to Jun 26, 2032, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJun 26, 2032High confidence

This family

US 9,335,038In force
Mar 2033
Mar 2033
US D770,079In force
Oct 2030
Oct 2030
US 10,473,317In force
Mar 2033
Mar 2033
US D786,490In force
May 2032
May 2032
US D802,830In force
Nov 2032
Nov 2032
US D826,468In force
Aug 2033
Aug 2033
US 10,955,127In force
Jun 2032
Jun 2032
US 11,877,551this patent
Jun 2032
Jun 2032
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.
RecordedAssignorAssigneeConveyance
Oct 27, 2023
Reel 65381, frame 668
Hgci, Inc.JPMorgan Chase Bank, N.A., as Administrative AgentSecurity Interest
Dec 14, 2023
Reel 65872, frame 865
Stanley, JohnIP Holdings LLCAssignment of Assignor's Interest
Dec 14, 2023
Reel 66014, frame 105
IP Holdings, LLCHgci, Inc.Assignment of Assignor's Interest
Mar 25, 2026
Reel 76036, frame 946
Hgci, Inc.Hgci LLCChange of Name
Apr 8, 2026
Reel 75365, frame 632
JPMorgan Chase Bank, N.A., as Administrative AgentHgci LLCRelease of Security Interest in Patents
Aug 7, 2026
Reel 76153, frame 133
Hgci LLCBank of MontrealSecurity 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.

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