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Maintenance fees coming due

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122 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Nov 21, 2026. Unpaid by May 21, 2027, that one lapses early.
A maintenance fee does not end a patent on its due date. It falls due at 3.5, 7.5 and 11.5 years from grant, and the patent lapses only if the fee is still unpaid at the end of the six month grace period that follows.
PatentTitleHolderStatusFee dueLapses if unpaidExpiresConfidence
US 10,295,880Narrow Pre-Deposition Laser Deletion
In force
Fee due Nov 21, 2026
Lapses if unpaid May 21, 2027
 · Medium confidence
View Operating CorporationIn forceNov 21, 2026May 21, 2027Medium confidence
US 11,654,659Mitigating Defects in an Electrochromic Device Under a Bus Bar
In force
Fee due Nov 23, 2026
Lapses if unpaid May 24, 2027
 · High confidence
View Operating CorporationIn forceNov 23, 2026May 24, 2027High confidence
US 11,656,521Solar Power Dynamic Glass for Heating and Cooling Buildings
In force
Fee due Nov 23, 2026
Lapses if unpaid May 24, 2027
 · High confidence
View Operating CorporationIn forceNov 23, 2026May 24, 2027High confidence
US 10,301,871Multi-Zone Ec Windows
In force
Fee due Nov 28, 2026
Lapses if unpaid May 28, 2027
 · Medium confidence
View Operating CorporationIn forceNov 28, 2026May 28, 2027Medium confidence
US 10,303,035Self-Contained Ec Igu
In force
Fee due Nov 28, 2026
Lapses if unpaid May 28, 2027
 · High confidence
View Operating CorporationIn forceNov 28, 2026May 28, 2027High confidence
US 11,668,990Fabrication of Electrochromic Devices
In force
Fee due Dec 6, 2026
Lapses if unpaid Jun 7, 2027
 · Medium confidence
View Operating CorporationIn forceDec 6, 2026Jun 7, 2027Medium confidence
US 11,668,991Controlling Transitions in Optically Switchable Devices
In force
Fee due Dec 6, 2026
Lapses if unpaid Jun 7, 2027
 · High confidence
View Operating CorporationIn forceDec 6, 2026Jun 7, 2027High confidence
US 11,668,992Commissioning Window Networks
In force
Fee due Dec 6, 2026
Lapses if unpaid Jun 7, 2027
 · Medium confidence
View Operating CorporationIn forceDec 6, 2026Jun 7, 2027Medium confidence
US 11,670,833Window Antennas
In force
Fee due Dec 6, 2026
Lapses if unpaid Jun 7, 2027
 · High confidence
View Operating CorporationIn forceDec 6, 2026Jun 7, 2027High confidence
US 10,320,231Wireless Powered Electrochromic Windows
In force
Fee due Dec 11, 2026
Lapses if unpaid Jun 11, 2027
 · High confidence
View Operating CorporationIn forceDec 11, 2026Jun 11, 2027High confidence
112 more maintenance fees coming due in the 12 months from Nov 15, 2026 · Pro
10 of 122 patents shown. Soonest fee due date first, then patent number.
Pro members see every patent with a maintenance fee coming due: number, title, status, the due date, and the date it lapses if the fee goes unpaid through the grace period.
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Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited