Maintenance fees coming due
4 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 30, 2026. Unpaid by Jun 1, 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 11,660,486 | Fire Extinguisher and Method In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 · High confidence | Novatech FS | In force | Nov 30, 2026 | Jun 1, 2027 | High confidence | |
| US 11,801,618 | Method for Producing an Implant from a Biocompatible Silicone In force Fee due Apr 30, 2027 Lapses if unpaid Nov 1, 2027 · High confidence | Novatech S.A. | In force | Apr 30, 2027 | Nov 1, 2027 | High confidence | |
| US 11,812,928 | Medical Device In force Fee due May 14, 2027 Lapses if unpaid Nov 15, 2027 · High confidence | Novatech S.A. | In force | May 14, 2027 | Nov 15, 2027 | High confidence | |
| US 11,978,602 | Switch Apparatus In force Fee due Nov 7, 2027 Lapses if unpaid May 8, 2028 · High confidence | Hyundai Motor Company, Kia Corporation, Novatech Co., Ltd. and Alps Electric Korea Co., Ltd. | In force | Nov 7, 2027 | May 8, 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.