Maintenance fees coming due
6 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Apr 15, 2027. Unpaid by Oct 15, 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 10,444,540 | Contact Lens Manufacturing Method and Contact Lens In force Fee due Apr 15, 2027 Lapses if unpaid Oct 15, 2027 · High confidence | Menicon Co., Ltd. | In force | Apr 15, 2027 | Oct 15, 2027 | High confidence | |
| US 10,444,542 | Decentered Type Contact Lens and Decentered Type Contact Lens Set In force Fee due Apr 15, 2027 Lapses if unpaid Oct 15, 2027 · High confidence | Menicon Co., Ltd. | In force | Apr 15, 2027 | Oct 15, 2027 | High confidence | |
| US 9,164,296 | Soft Contact Lens Application Method, Liquid for Contact Lenses and Soft Contact Lens Package In force Fee due Apr 20, 2027 Lapses if unpaid Oct 20, 2027 · High confidence | Menicon Co., Ltd. | In force | Apr 20, 2027 | Oct 20, 2027 | High confidence | |
| US 9,173,464 | Contact Lens Case In force Fee due May 3, 2027 Lapses if unpaid Nov 3, 2027 · High confidence | Menicon Co., Ltd. | In force | May 3, 2027 | Nov 3, 2027 | High confidence | |
| US 9,215,974 | Apparatus for Optometric Self-Examination, Management Server and Contact Lens Selection System In force Fee due Jun 22, 2027 Lapses if unpaid Dec 22, 2027 · High confidence | Menicon Co., Ltd. | In force | Jun 22, 2027 | Dec 22, 2027 | High confidence | |
| US 10,564,448 | Diffractive Multi-Focal Ophthalmic Lens and Method for Manufacturing Diffractive Multi-Focal Ophthalmic Lens In force Fee due Aug 18, 2027 Lapses if unpaid Feb 18, 2028 · High confidence | Menicon Co., Ltd. | In force | Aug 18, 2027 | Feb 18, 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.