Maintenance fees coming due
6 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Feb 28, 2027. Unpaid by Aug 30, 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 11,739,179 | Disulfide-Containing Monomer, Its Reduced Form, and Its Derivate, Method to Synthesize the Same, and Polymer Containing the Same In force Fee due Feb 28, 2027 Lapses if unpaid Aug 30, 2027 · High confidence | Ambilight Inc. | In force | Feb 28, 2027 | Aug 30, 2027 | High confidence | |
| US 11,773,213 | Thermally Stable and Solvent-Resistant Conductive Polymer Composites In force Fee due Apr 3, 2027 Lapses if unpaid Oct 4, 2027 · High confidence | Ambilight Inc. | In force | Apr 3, 2027 | Oct 4, 2027 | High confidence | |
| US 11,868,016 | Light-Emitting Electrochromic Device In force Fee due Jul 9, 2027 Lapses if unpaid Jan 10, 2028 · High confidence | Ambilight Inc. | In force | Jul 9, 2027 | Jan 10, 2028 | High confidence | |
| US 11,874,578 | High Transparency Electrochromic Polymers In force Fee due Jul 16, 2027 Lapses if unpaid Jan 18, 2028 · High confidence | Ambilight Inc. | In force | Jul 16, 2027 | Jan 18, 2028 | High confidence | |
| US 11,879,098 | High Transparency Electrochromic Polymers In force Fee due Jul 23, 2027 Lapses if unpaid Jan 24, 2028 · High confidence | Ambilight Inc. | In force | Jul 23, 2027 | Jan 24, 2028 | High confidence | |
| US 11,914,260 | VANADIUM OXIDE WITH A FORMULA OF VOx AS CHARGE BALANCING MATERIAL FOR ELECTROCHROMIC DEVICES In force Fee due Aug 27, 2027 Lapses if unpaid Feb 28, 2028 · High confidence | Ambilight Inc. | In force | Aug 27, 2027 | Feb 28, 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.