Maintenance fees coming due
2 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Apr 29, 2027. Unpaid by Oct 29, 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 10,459,032 | Test Switch Signal Analyzer In force Fee due Apr 29, 2027 Lapses if unpaid Oct 29, 2027 · High confidence | Fischer Block, Inc. | In force | Apr 29, 2027 | Oct 29, 2027 | High confidence | |
| US 11,867,770 | Remaining-Life and Time-To-Failure Predictions of Power Assets In force Fee due Jul 9, 2027 Lapses if unpaid Jan 10, 2028 · High confidence | Fischer Block, Inc. | In force | Jul 9, 2027 | Jan 10, 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.