Maintenance fees coming due
141 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Nov 19, 2026. Unpaid by May 19, 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 9,036,896 | Inspection System and Method for Inspecting Line Width And/Or Positional Errors of a Pattern In force Fee due Nov 19, 2026 Lapses if unpaid May 19, 2027 · High confidence | Nuflare Technology, Inc. | In force | Nov 19, 2026 | May 19, 2027 | High confidence | |
| US 11,664,191 | Electron Beam Irradiation Apparatus and Electron Beam Irradiation Method In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 · High confidence | Nuflare Technology, Inc. | In force | Nov 30, 2026 | Jun 1, 2027 | High confidence | |
| US 10,319,564 | Multi Charged Particle Beam Writing Apparatus, and Multi Charged Particle Beam Writing Method In force Fee due Dec 11, 2026 Lapses if unpaid Jun 11, 2027 · High confidence | Nuflare Technology, Inc. | In force | Dec 11, 2026 | Jun 11, 2027 | High confidence | |
| US 10,325,755 | Charged Particle Beam Lithography Apparatus and Charged Particle Beam Lithography Method In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 · High confidence | Nuflare Technology, Inc. | In force | Dec 18, 2026 | Jun 21, 2027 | High confidence | |
| US 9,063,440 | Charged Particle Beam Writing Apparatus and Charged Particle Beam Writing Method In force Fee due Dec 23, 2026 Lapses if unpaid Jun 23, 2027 · High confidence | Nuflare Technology, Inc. | In force | Dec 23, 2026 | Jun 23, 2027 | High confidence | |
| US 11,688,058 | Pattern Inspection Apparatus and Pattern Inspection Method In force Fee due Dec 27, 2026 Lapses if unpaid Jun 28, 2027 · High confidence | Nuflare Technology, Inc. | In force | Dec 27, 2026 | Jun 28, 2027 | High confidence | |
| US 10,340,120 | Blanking Aperture Array, Method for Manufacturing Blanking Aperture Array, and Multi-Charged Particle Beam Writing Apparatus In force Fee due Jan 2, 2027 Lapses if unpaid Jul 2, 2027 · High confidence | Nuflare Technology, Inc. | In force | Jan 2, 2027 | Jul 2, 2027 | High confidence | |
| US 11,694,868 | Multi-Beam Image Acquisition Apparatus and Multi-Beam Image Acquisition Method In force Fee due Jan 4, 2027 Lapses if unpaid Jul 6, 2027 · High confidence | Nuflare Technology, Inc. | In force | Jan 4, 2027 | Jul 6, 2027 | High confidence | |
| US 9,076,564 | Multi Charged Particle Beam Writing Apparatus and Multi Charged Particle Beam Writing Method In force Fee due Jan 7, 2027 Lapses if unpaid Jul 7, 2027 · High confidence | NuFlare Technology, Inc. | In force | Jan 7, 2027 | Jul 7, 2027 | High confidence | |
| US 10,345,724 | Position Correction Method of Stage Mechanism and Charged Particle Beam Lithography Apparatus In force Fee due Jan 9, 2027 Lapses if unpaid Jul 9, 2027 · High confidence | Nuflare Technology, Inc. | In force | Jan 9, 2027 | Jul 9, 2027 | High confidence | |
| 131 more maintenance fees coming due in the 12 months from Nov 15, 2026 · Pro | |||||||
10 of 141 patents shown. Soonest fee due date first, then patent number.
Pro members see every patent with a maintenance fee coming due: number, title, status, the due date, and the date it lapses if the fee goes unpaid through the grace period.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.