Maintenance fees coming due
4 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 16, 2026. Unpaid by May 17, 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 11,651,872 | Insertable Pin for High Voltage Insulating Covers In force Fee due Nov 16, 2026 Lapses if unpaid May 17, 2027 · High confidence | Eco Electrical Systems | In force | Nov 16, 2026 | May 17, 2027 | High confidence | |
| US 11,756,711 | Fuse Cutout Cover with Extendable Roof In force Fee due Mar 12, 2027 Lapses if unpaid Sep 13, 2027 · High confidence | Eco Electrical Systems Inc. | In force | Mar 12, 2027 | Sep 13, 2027 | High confidence | |
| US 11,824,341 | High Voltage Conductor Cover with Fenders Over Retaining Pin Holes In force Fee due May 21, 2027 Lapses if unpaid Nov 22, 2027 · High confidence | Eco Electrical Systems | In force | May 21, 2027 | Nov 22, 2027 | High confidence | |
| US 10,566,166 | Squirrel Guard for High Voltage Insulator Cover In force Fee due Aug 18, 2027 Lapses if unpaid Feb 18, 2028 · High confidence | Eco Electrical Systems | In force | Aug 18, 2027 | Feb 18, 2028 | High confidence |
4 of 4 patents shown. Soonest fee due date first, then patent number.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.