Maintenance fees coming due
3 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Jul 30, 2027. Unpaid by Jan 31, 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 11,883,739 | Replaceable Liquid Scent Cartridge In force Fee due Jul 30, 2027 Lapses if unpaid Jan 31, 2028 · High confidence | Ovr Tech, LLC | In force | Jul 30, 2027 | Jan 31, 2028 | High confidence | |
| US 11,890,535 | System and Method for Generating Olfactory Stimuli In force Fee due Aug 6, 2027 Lapses if unpaid Feb 7, 2028 · Medium confidence | Ovr Tech, LLC | In force | Aug 6, 2027 | Feb 7, 2028 | Medium confidence | |
| US 11,975,259 | Systems and Techniques for Generating Scent In force Fee due Nov 7, 2027 Lapses if unpaid May 8, 2028 · Low confidence | Ovr Tech, LLC | In force | Nov 7, 2027 | May 8, 2028 | Low 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.