Maintenance fees coming due
25 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 4, 2026. Unpaid by Jun 4, 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.
| Patent | Title | Holder | Status | Fee due | Lapses if unpaid | Expires | Confidence |
|---|---|---|---|---|---|---|---|
| US 10,312,747 | Authentication to Enable/Disable Guided Surface Wave Receive Equipment In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 · High confidence | Quantum Wave, LLC | In force | Dec 4, 2026 | Jun 4, 2027 | High confidence | |
| US 10,320,045 | Superposition of Guided Surface Waves on Lossy Media In force Fee due Dec 11, 2026 Lapses if unpaid Jun 11, 2027 · High confidence | Quantum Wave, LLC | In force | Dec 11, 2026 | Jun 11, 2027 | High confidence | |
| US 10,320,200 | Chemically Enhanced Isolated Capacitance In force Fee due Dec 11, 2026 Lapses if unpaid Jun 11, 2027 · High confidence | Quantum Wave, LLC | In force | Dec 11, 2026 | Jun 11, 2027 | High confidence | |
| US 10,320,233 | Changing Guided Surface Wave Transmissions to Follow Load Conditions In force Fee due Dec 11, 2026 Lapses if unpaid Jun 11, 2027 · High confidence | Quantum Wave, LLC | In force | Dec 11, 2026 | Jun 11, 2027 | High confidence | |
| US 10,324,163 | Geolocation Using Guided Surface Waves In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 · High confidence | Quantum Wave, LLC | In force | Dec 18, 2026 | Jun 21, 2027 | High confidence | |
| US 10,326,190 | Enhanced Guided Surface Waveguide Probe In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 · High confidence | Quantum Wave, LLC | In force | Dec 18, 2026 | Jun 21, 2027 | High confidence | |
| US 10,333,316 | Wired and Wireless Power Distribution Coexistence In force Fee due Dec 25, 2026 Lapses if unpaid Jun 25, 2027 · High confidence | Quantum Wave, LLC | In force | Dec 25, 2026 | Jun 25, 2027 | High confidence | |
| US 10,355,333 | Global Electrical Power Multiplication In force Fee due Jan 16, 2027 Lapses if unpaid Jul 16, 2027 · High confidence | Quantum Wave, LLC | In force | Jan 16, 2027 | Jul 16, 2027 | High confidence | |
| US 10,355,480 | Adaptation of Polyphase Waveguide Probes In force Fee due Jan 16, 2027 Lapses if unpaid Jul 16, 2027 · High confidence | Quantum Wave, LLC | In force | Jan 16, 2027 | Jul 16, 2027 | High confidence | |
| US 10,381,843 | Hierarchical Power Distribution In force Fee due Feb 13, 2027 Lapses if unpaid Aug 13, 2027 · High confidence | Quantum Wave, LLC | In force | Feb 13, 2027 | Aug 13, 2027 | High confidence | |
| 15 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro | |||||||
10 of 25 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.