Maintenance fees coming due
2 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Apr 22, 2027. Unpaid by Oct 22, 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 10,454,300 | UPS Power Supply In force Fee due Apr 22, 2027 Lapses if unpaid Oct 22, 2027 · High confidence | Vertiv Tech Co., Ltd. | In force | Apr 22, 2027 | Oct 22, 2027 | High confidence | |
| US 10,594,208 | Current Limiting Control Method and Device for Three-Level Inverter In force Fee due Sep 17, 2027 Lapses if unpaid Mar 17, 2028 · High confidence | Vertiv Tech Co., Ltd. | In force | Sep 17, 2027 | Mar 17, 2028 | High confidence |
2 of 2 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.