Maintenance fees coming due
2 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 4, 2026. Unpaid by Jun 4, 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 10,310,458 | Process Optimization by Grouping Mixed Integer Nonlinear Programming Constraints In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 · High confidence | Aveva Software, LLC | In force | Dec 4, 2026 | Jun 4, 2027 | High confidence | |
| US 11,762,345 | Process Optimization by Grouping Mixed Integer Nonlinear Programming Constraints In force Fee due Mar 19, 2027 Lapses if unpaid Sep 20, 2027 · High confidence | Aveva Software, LLC | In force | Mar 19, 2027 | Sep 20, 2027 | 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.