Maintenance fees coming due
3 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 13, 2026. Unpaid by Jun 14, 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 11,674,949 | Method and System for Assessing Drinking Behavior In force Fee due Dec 13, 2026 Lapses if unpaid Jun 14, 2027 · High confidence | 1A Smart Start LLC | In force | Dec 13, 2026 | Jun 14, 2027 | High confidence | |
| US 10,436,770 | Automated Calibration Station for Ignition Interlock Devices In force Fee due Apr 8, 2027 Lapses if unpaid Oct 8, 2027 · High confidence | 1A Smart Start, LLC | In force | Apr 8, 2027 | Oct 8, 2027 | High confidence | |
| US 10,458,975 | Calibration Device and Method for Calibrating an Ignition Interlock Device In force Fee due Apr 29, 2027 Lapses if unpaid Oct 29, 2027 · High confidence | 1A Smart Start, LLC | In force | Apr 29, 2027 | Oct 29, 2027 | High confidence |
3 of 3 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.