Maintenance fees coming due
1 maintenance fee comes due on Apr 10, 2027, in the 12 months from Nov 14, 2026. Unpaid by Oct 12, 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 11,780,807 | Benzoselenophene, Benzothiophene, and Benzofuran Analogs and Methods of Modulating the Serotonin 5-HT2C Receptor In force Fee due Apr 10, 2027 Lapses if unpaid Oct 12, 2027 · Medium confidence | Kuleon LLC | In force | Apr 10, 2027 | Oct 12, 2027 | Medium confidence |
1 of 1 patent 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.