Maintenance fees coming due
3 maintenance fees come due in the 12 months from Nov 14, 2026, the next on May 14, 2027. Unpaid by Nov 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 11,813,991 | Mount Assembly In force Fee due May 14, 2027 Lapses if unpaid Nov 15, 2027 · High confidence | Portable Multimedia Ltd. | In force | May 14, 2027 | Nov 15, 2027 | High confidence | |
| US 11,820,298 | Mount Assembly In force Fee due May 21, 2027 Lapses if unpaid Nov 22, 2027 · High confidence | Portable Multimedia Ltd. | In force | May 21, 2027 | Nov 22, 2027 | High confidence | |
| US 11,852,956 | Camera System In force Fee due Jun 26, 2027 Lapses if unpaid Dec 27, 2027 · Medium confidence | Portable Multimedia Ltd. | In force | Jun 26, 2027 | Dec 27, 2027 | Medium confidence |
3 of 3 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.