Maintenance fees coming due
1 maintenance fee comes due on Oct 21, 2027, in the 12 months from Nov 14, 2026. Unpaid by Apr 21, 2028, 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 10,626,839 | Ignition System for Light-Duty Combustion Engine In force Fee due Oct 21, 2027 Lapses if unpaid Apr 21, 2028 · High confidence | Walbro LLC | In force | Oct 21, 2027 | Apr 21, 2028 | High confidence |
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Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.