Maintenance fees coming due
4 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Jan 21, 2027. Unpaid by Jul 21, 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 9,087,145 | Ophthalmic Drug Delivery In force Fee due Jan 21, 2027 Lapses if unpaid Jul 21, 2027 · High confidence | Hyperion Defi, Inc. | In force | Jan 21, 2027 | Jul 21, 2027 | High confidence | |
| US 11,839,487 | Ophthalmic Drug Delivery In force Fee due Jun 12, 2027 Lapses if unpaid Dec 13, 2027 · Medium confidence | Hyperion Defi, Inc. | In force | Jun 12, 2027 | Dec 13, 2027 | Medium confidence | |
| US 10,639,194 | High Modulus Polymeric Ejector Mechanism, Ejector Device, and Methods of Use In force Fee due Nov 5, 2027 Lapses if unpaid May 5, 2028 · High confidence | Hyperion Defi, Inc. | In force | Nov 5, 2027 | May 5, 2028 | High confidence | |
| US 10,646,373 | Ejector Mechanism, Ejector Device, and Methods of Use In force Fee due Nov 12, 2027 Lapses if unpaid May 12, 2028 · High confidence | Hyperion Defi, Inc. | In force | Nov 12, 2027 | May 12, 2028 | High confidence |
4 of 4 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.