Maintenance fees coming due
2 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Jul 7, 2027. Unpaid by Jan 7, 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 10,525,381 | Purging System for Desanding Vessels In force Fee due Jul 7, 2027 Lapses if unpaid Jan 7, 2028 · High confidence | Specialized Desanders Inc. | In force | Jul 7, 2027 | Jan 7, 2028 | High confidence | |
| US 9,327,214 | Desanding Apparatus and a Method of Using Same In force Fee due Nov 3, 2027 Lapses if unpaid May 3, 2028 · High confidence | Specialized Desanders Inc. | In force | Nov 3, 2027 | May 3, 2028 | High confidence |
2 of 2 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.