Maintenance fees coming due
4 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Apr 20, 2027. Unpaid by Oct 20, 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 9,163,363 | Load-Bearing Paver and Method of Installation In force Fee due Apr 20, 2027 Lapses if unpaid Oct 20, 2027 · Medium confidence | Pavestone, LLC | In force | Apr 20, 2027 | Oct 20, 2027 | Medium confidence | |
| US 11,801,622 | Manufactured Retaining Wall Block with Improved False Joint In force Fee due Apr 30, 2027 Lapses if unpaid Nov 1, 2027 · High confidence | Pavestone, LLC | In force | Apr 30, 2027 | Nov 1, 2027 | High confidence | |
| US 10,486,344 | Adjustable Locator Retaining Wall Block and Mold Apparatus In force Fee due May 26, 2027 Lapses if unpaid Nov 26, 2027 · High confidence | Pavestone, LLC | In force | May 26, 2027 | Nov 26, 2027 | High confidence | |
| US 10,583,588 | Manufactured Retaining Wall Block with Improved False Joint In force Fee due Sep 10, 2027 Lapses if unpaid Mar 10, 2028 · High confidence | Pavestone, LLC | In force | Sep 10, 2027 | Mar 10, 2028 | High confidence |
4 of 4 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.