Maintenance fees coming due
3 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Mar 19, 2027. Unpaid by Sep 20, 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 11,759,440 | Formulation for Inhibiting Formation of 5-HT2B Agonists and Methods of Using Same In force Fee due Mar 19, 2027 Lapses if unpaid Sep 20, 2027 · Medium confidence | Zogenix International Limited | In force | Mar 19, 2027 | Sep 20, 2027 | Medium confidence | |
| US 11,786,487 | Formulation for Inhibiting Formation of 5-HT2B Agonists and Methods of Using Same In force Fee due Apr 17, 2027 Lapses if unpaid Oct 18, 2027 · Medium confidence | Zogenix International Limited | In force | Apr 17, 2027 | Oct 18, 2027 | Medium confidence | |
| US 10,603,290 | Formulation for Inhibiting Formation of 5-HT2B Agonists and Methods of Using Same In force Fee due Sep 30, 2027 Lapses if unpaid Mar 31, 2028 · Medium confidence | Zogenix International Limited | In force | Sep 30, 2027 | Mar 31, 2028 | Medium 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.