Maintenance fees coming due
36 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 6, 2026. Unpaid by Jun 7, 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 11,669,170 | Systems and Methods for Determining Contexts of Mobile Devices In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 · Medium confidence | Nextnav, LLC | In force | Dec 6, 2026 | Jun 7, 2027 | Medium confidence | |
| US 11,674,798 | Systems and Methods for Determining Calibration Values for Atmospheric Sensors That Provide Measured Pressures Used for Estimating Altitudes of Mobile Devices In force Fee due Dec 13, 2026 Lapses if unpaid Jun 14, 2027 · High confidence | Nextnav, LLC | In force | Dec 13, 2026 | Jun 14, 2027 | High confidence | |
| US 9,057,606 | Wide Area Positioning System In force Fee due Dec 16, 2026 Lapses if unpaid Jun 16, 2027 · High confidence | Nextnav, LLC | In force | Dec 16, 2026 | Jun 16, 2027 | High confidence | |
| US 11,705,936 | Wide Area Positioning System In force Fee due Jan 18, 2027 Lapses if unpaid Jul 19, 2027 · Low confidence | Nextnav, LLC | In force | Jan 18, 2027 | Jul 19, 2027 | Low confidence | |
| US 11,722,593 | Systems and Methods for Determining a Height of a Mobile Device Above a Surface In force Fee due Feb 8, 2027 Lapses if unpaid Aug 9, 2027 · High confidence | Nextnav, LLC | In force | Feb 8, 2027 | Aug 9, 2027 | High confidence | |
| US 10,378,894 | Systems and Methods for Estimating an Altitude of a Mobile Device Based on Detected Temperature Conditions In force Fee due Feb 13, 2027 Lapses if unpaid Aug 13, 2027 · High confidence | Nextnav, LLC | In force | Feb 13, 2027 | Aug 13, 2027 | High confidence | |
| US 10,386,448 | Systems and Methods for Selecting Atmospheric Data of Reference Nodes for Use in Computing the Altitude of a Receiver In force Fee due Feb 20, 2027 Lapses if unpaid Aug 20, 2027 · High confidence | Nextnav, LLC | In force | Feb 20, 2027 | Aug 20, 2027 | High confidence | |
| US 11,733,038 | Floor Height Estimation and Calibration of a Mobile Device In force Fee due Feb 22, 2027 Lapses if unpaid Aug 23, 2027 · High confidence | Nextnav, LLC | In force | Feb 22, 2027 | Aug 23, 2027 | High confidence | |
| US 11,733,119 | Systems and Methods for Determining When to Calibrate a Pressure Sensor of a Mobile Device In force Fee due Feb 22, 2027 Lapses if unpaid Aug 23, 2027 · High confidence | Nextnav, LLC | In force | Feb 22, 2027 | Aug 23, 2027 | High confidence | |
| US 9,119,165 | Coding in a Wide Area Positioning System (WAPS) In force Fee due Feb 25, 2027 Lapses if unpaid Aug 25, 2027 · High confidence | Nextnav, LLC | In force | Feb 25, 2027 | Aug 25, 2027 | High confidence | |
| 26 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro | |||||||
10 of 36 patents shown. Soonest fee due date first, then patent number.
Pro members see every patent with a maintenance fee coming due: number, title, status, the due date, and the date it lapses if the fee goes unpaid through the grace period.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.