Maintenance fees coming due
7 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Dec 18, 2026. Unpaid by Jun 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 10,322,239 | Medicament Delivery Device for Administration of Opioid Antagonists Including Formulations for Naloxone In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 · High confidence | Kaleo, Inc. | In force | Dec 18, 2026 | Jun 21, 2027 | High confidence | |
| US 10,342,924 | Medicament Delivery Devices for Administration of a Medicament Within a Prefilled Syringe In force Fee due Jan 9, 2027 Lapses if unpaid Jul 9, 2027 · High confidence | Kaleo, Inc. | In force | Jan 9, 2027 | Jul 9, 2027 | High confidence | |
| US 9,084,849 | Medicament Delivery Devices for Administration of a Medicament Within a Prefilled Syringe In force Fee due Jan 21, 2027 Lapses if unpaid Jul 21, 2027 · High confidence | Kaleo, Inc. | In force | Jan 21, 2027 | Jul 21, 2027 | High confidence | |
| US 11,771,830 | Medicament Delivery Device and Methods for Delivering Drugs to Infants and Children In force Fee due Apr 3, 2027 Lapses if unpaid Oct 4, 2027 · High confidence | Kaleo, Inc. | In force | Apr 3, 2027 | Oct 4, 2027 | High confidence | |
| US 9,173,999 | Devices and Methods for Delivering Medicaments from a Multi-Chamber Container In force Fee due May 3, 2027 Lapses if unpaid Nov 3, 2027 · High confidence | Kaleo, Inc. | In force | May 3, 2027 | Nov 3, 2027 | High confidence | |
| US 10,576,206 | Auto-Injectors for Administration of a Medicament Within a Prefilled Syringe In force Fee due Sep 3, 2027 Lapses if unpaid Mar 3, 2028 · High confidence | Kaleo, Inc. | In force | Sep 3, 2027 | Mar 3, 2028 | High confidence | |
| US 11,929,160 | Medicament Delivery Devices with Wireless Connectivity and Compliance Detection In force Fee due Sep 12, 2027 Lapses if unpaid Mar 13, 2028 · High confidence | Kaleo, Inc. | In force | Sep 12, 2027 | Mar 13, 2028 | High confidence |
7 of 7 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.