Maintenance fees coming due
3 maintenance fees come due in the 12 months from Nov 14, 2026, the next on May 21, 2027. Unpaid by Nov 22, 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 11,819,273 | Augmented and Extended Reality Glasses for Use in Surgery Visualization and Telesurgery In force Fee due May 21, 2027 Lapses if unpaid Nov 22, 2027 · High confidence | Raytrx, LLC | In force | May 21, 2027 | Nov 22, 2027 | High confidence | |
| US 11,906,736 | Wearable Pupil-Forming Display Apparatus In force Fee due Aug 20, 2027 Lapses if unpaid Feb 22, 2028 · High confidence | Raytrx, LLC | In force | Aug 20, 2027 | Feb 22, 2028 | High confidence | |
| US 11,956,414 | Wearable Image Manipulation and Control System with Correction for Vision Defects and Augmentation of Vision and Sensing In force Fee due Oct 9, 2027 Lapses if unpaid Apr 10, 2028 · High confidence | Raytrx, LLC | In force | Oct 9, 2027 | Apr 10, 2028 | High 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.