Maintenance fees coming due
1 maintenance fee comes due on Aug 11, 2027, in the 12 months from Nov 14, 2026. Unpaid by Feb 11, 2028, 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 10,558,144 | Developing Cartridge, Developing Apparatus and Image Forming Apparatus Having the Same In force Fee due Aug 11, 2027 Lapses if unpaid Feb 11, 2028 · High confidence | S-Printing Solution Co., Ltd. | In force | Aug 11, 2027 | Feb 11, 2028 | High confidence |
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Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.