Maintenance fees coming due
1 maintenance fee comes due on Dec 9, 2026, in the 12 months from Nov 15, 2026. Unpaid by Jun 9, 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 9,052,062 | Fuel Tank with Separating Membrane In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 · High confidence | Astrium GmbH | In force | Dec 9, 2026 | Jun 9, 2027 | High confidence |
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