Maintenance fees coming due
6 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 27, 2026. Unpaid by Jun 28, 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 11,684,798 | Illumination Devices for Inducing Biological Effects In force Fee due Dec 27, 2026 Lapses if unpaid Jun 28, 2027 · High confidence | KNOW Bio, LLC | In force | Dec 27, 2026 | Jun 28, 2027 | High confidence | |
| US 11,752,359 | Illumination Devices for Inducing Biological Effects In force Fee due Mar 12, 2027 Lapses if unpaid Sep 13, 2027 · High confidence | KNOW Bio, LLC | In force | Mar 12, 2027 | Sep 13, 2027 | High confidence | |
| US 11,813,270 | Nitric Oxide-Releasing Antibacterial Compounds, Formulations, and Methods Pertaining Thereto In force Fee due May 14, 2027 Lapses if unpaid Nov 15, 2027 · High confidence | Know Bio, LLC | In force | May 14, 2027 | Nov 15, 2027 | High confidence | |
| US 10,525,275 | Systems and Methods for Phototherapeutic Modulation of Nitric Oxide In force Fee due Jul 7, 2027 Lapses if unpaid Jan 7, 2028 · High confidence | Know Bio, LLC | In force | Jul 7, 2027 | Jan 7, 2028 | High confidence | |
| US 10,569,097 | Systems and Methods for Phototherapeutic Modulation of Nitric Oxide In force Fee due Aug 25, 2027 Lapses if unpaid Feb 25, 2028 · High confidence | Know Bio, LLC | In force | Aug 25, 2027 | Feb 25, 2028 | High confidence | |
| US 11,975,215 | Devices and Related Methods for Phototherapeutic Treatment of Skin In force Fee due Nov 7, 2027 Lapses if unpaid May 8, 2028 · High confidence | Know Bio, LLC | In force | Nov 7, 2027 | May 8, 2028 | High confidence |
6 of 6 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.