Maintenance fees coming due
1 maintenance fee comes due on Aug 9, 2027, in the 12 months from Nov 14, 2026. Unpaid by Feb 9, 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 9,255,794 | Microwave Probe for Furnace Refractory Material In force Fee due Aug 9, 2027 Lapses if unpaid Feb 9, 2028 · High confidence | Paneratech, Inc. | In force | Aug 9, 2027 | Feb 9, 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.