Maintenance fees coming due
5 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Jul 2, 2027. Unpaid by Jan 3, 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 11,863,153 | Structures, Acoustic Wave Resonators, Devices and Systems to Sense a Target Variable In force Fee due Jul 2, 2027 Lapses if unpaid Jan 3, 2028 · High confidence | QXONIX Inc. | In force | Jul 2, 2027 | Jan 3, 2028 | High confidence | |
| US 11,870,415 | Acoustic Device Structures, Devices and Systems In force Fee due Jul 9, 2027 Lapses if unpaid Jan 10, 2028 · High confidence | Qxonix Inc. | In force | Jul 9, 2027 | Jan 10, 2028 | High confidence | |
| US 11,870,416 | Bulk Acoustic Wave (BAW) Resonator with Patterned Layer Structures, Devices and Systems In force Fee due Jul 9, 2027 Lapses if unpaid Jan 10, 2028 · Medium confidence | Qxonix Inc. | In force | Jul 9, 2027 | Jan 10, 2028 | Medium confidence | |
| US 11,936,360 | Mass Loaded Bulk Acoustic Wave (BAW) Resonator Structures, Devices, and Systems In force Fee due Sep 19, 2027 Lapses if unpaid Mar 20, 2028 · Medium confidence | Qxonix Inc. | In force | Sep 19, 2027 | Mar 20, 2028 | Medium confidence | |
| US 11,967,940 | Temperature Compensating Bulk Acoustic Wave (BAW) Resonator Structures, Devices and Systems In force Fee due Oct 23, 2027 Lapses if unpaid Apr 24, 2028 · Medium confidence | Qxonix Inc. | In force | Oct 23, 2027 | Apr 24, 2028 | Medium confidence |
5 of 5 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.