Maintenance fees coming due
1 maintenance fee comes due on Jan 23, 2027, in the 12 months from Nov 14, 2026. Unpaid by Jul 23, 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 10,359,306 | Systems and Methods for Testing Petroleum Wells In force Fee due Jan 23, 2027 Lapses if unpaid Jul 23, 2027 · High confidence | Schneider Electric Systems USA, Inc. | In force | Jan 23, 2027 | Jul 23, 2027 | High confidence |
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Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.