Maintenance fees coming due
5 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Feb 1, 2027. Unpaid by Aug 2, 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 11,714,441 | Method and Apparatus for Delivering Power Using External Data In force Fee due Feb 1, 2027 Lapses if unpaid Aug 2, 2027 · Medium confidence | Stem, Inc. | In force | Feb 1, 2027 | Aug 2, 2027 | Medium confidence | |
| US 10,389,126 | Method and Apparatus for Damping Power Oscillations on an Electrical Grid Using Networked Distributed Energy Storage Systems In force Fee due Feb 20, 2027 Lapses if unpaid Aug 20, 2027 · High confidence | Stem, Inc. | In force | Feb 20, 2027 | Aug 20, 2027 | High confidence | |
| US 11,745,182 | Collapsible Centrifugation Vial System and Method In force Fee due Mar 5, 2027 Lapses if unpaid Sep 7, 2027 · High confidence | Stem Cell Partners, LLC | In force | Mar 5, 2027 | Sep 7, 2027 | High confidence | |
| US 9,136,712 | High Speed Feedback Adjustment of Power Charge/Discharge from Energy Storage System In force Fee due Mar 15, 2027 Lapses if unpaid Sep 15, 2027 · High confidence | STEM, Inc. | In force | Mar 15, 2027 | Sep 15, 2027 | High confidence | |
| US 10,571,947 | Increasing the Demand Reduction Effectiveness of an Energy Storage System In force Fee due Aug 25, 2027 Lapses if unpaid Feb 25, 2028 · High confidence | Stem, Inc. | In force | Aug 25, 2027 | Feb 25, 2028 | High confidence |
5 of 5 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.