Maintenance fees coming due
Beijing U-Precision Tech Co., Ltd.
4 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Jan 18, 2027. Unpaid by Jul 19, 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 11,703,361 | Five-Degree-Of-Freedom Heterodyne Grating Interferometry System In force Fee due Jan 18, 2027 Lapses if unpaid Jul 19, 2027 · High confidence | Tsinghua University and Beijing U-Precision Tech Co., Ltd. | In force | Jan 18, 2027 | Jul 19, 2027 | High confidence | |
| US 10,532,832 | Magnetic Levitation Reaction Sphere In force Fee due Jul 14, 2027 Lapses if unpaid Jan 14, 2028 · High confidence | Tsinghua University and Beijing U-Precision Tech Co., Ltd. | In force | Jul 14, 2027 | Jan 14, 2028 | High confidence | |
| US 10,597,172 | Magnetic-Fluid Momentum Sphere In force Fee due Sep 24, 2027 Lapses if unpaid Mar 24, 2028 · High confidence | Tsinghua University and Beijing U-Precision Tech Co., Ltd. | In force | Sep 24, 2027 | Mar 24, 2028 | High confidence | |
| US 11,940,349 | Plane Grating Calibration System In force Fee due Sep 26, 2027 Lapses if unpaid Mar 27, 2028 · High confidence | Tsinghua University and Beijing U-Precision Tech Co., Ltd. | In force | Sep 26, 2027 | Mar 27, 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.