Maintenance fees coming due

X Development LLC

93 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 16, 2026. Unpaid by May 17, 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 11,647,953	Hair Ratcheting Electroencephalogram Sensors X Development LLC In force Fee due Nov 16, 2026 Lapses if unpaid May 17, 2027 Term ends Mar 19, 2042 · High confidence	X Development LLC	In force	Nov 16, 2026	May 17, 2027	Term ends Mar 19, 2042	High confidence
US 10,292,585	Mental State Measurement Using Sensors Attached to Non-Wearable Objects X Development LLC In force Fee due Nov 21, 2026 Lapses if unpaid May 21, 2027 Term ends Jul 12, 2037 · High confidence	X Development LLC	In force	Nov 21, 2026	May 21, 2027	Term ends Jul 12, 2037	High confidence
US 10,295,418	Factory-calibrated Multi-spoke Strain Sensor System X Development LLC In force Fee due Nov 21, 2026 Lapses if unpaid May 21, 2027 Term ends Apr 21, 2037 · High confidence	X Development LLC	In force	Nov 21, 2026	May 21, 2027	Term ends Apr 21, 2037	High confidence
US 10,296,602	Determining Real-Time Timestamps for Robotic Sensor Data X Development LLC In force Fee due Nov 21, 2026 Lapses if unpaid May 21, 2027 Term ends Sep 28, 2037 · High confidence	X Development LLC	In force	Nov 21, 2026	May 21, 2027	Term ends Sep 28, 2037	High confidence
US 9,046,999	Dynamic Input at a Touch-Based Interface Based on Pressure X Development LLC In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Sep 6, 2033 · High confidence	X Development LLC	In force	Dec 2, 2026	Jun 2, 2027	Term ends Sep 6, 2033	High confidence
US 11,669,766	Quantum Analog-Digital Interconversion for Encoding and Decoding Quantum Signals X Development LLC In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Oct 5, 2040 · High confidence	X Development LLC	In force	Dec 6, 2026	Jun 7, 2027	Term ends Oct 5, 2040	High confidence
US 9,053,648	Tiled Displays Using Multiple Display Panels Over Monolithic Backlight Modules X Development LLC In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Jul 18, 2033 · High confidence	X Development LLC	In force	Dec 9, 2026	Jun 9, 2027	Term ends Jul 18, 2033	High confidence
US 10,317,963	Modular Mechanism Enabled by Mid-Range Wireless Power X Development LLC In force Fee due Dec 11, 2026 Lapses if unpaid Jun 11, 2027 Term ends Dec 8, 2036 · High confidence	X Development LLC	In force	Dec 11, 2026	Jun 11, 2027	Term ends Dec 8, 2036	High confidence
US 11,673,329	Sensing and Feedback for the Formation of Complex Three-Dimensional Acoustic Fields X Development LLC In force Fee due Dec 13, 2026 Lapses if unpaid Jun 14, 2027 Term ends Mar 18, 2039 · High confidence	X Development LLC	In force	Dec 13, 2026	Jun 14, 2027	Term ends Mar 18, 2039	High confidence
US 10,322,511	Robotic Finger Shape Recovery X Development LLC In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 Term ends Dec 6, 2037 · High confidence	X Development LLC	In force	Dec 18, 2026	Jun 21, 2027	Term ends Dec 6, 2037	High confidence
83 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 93 patents shown. Soonest fee due date first, then patent number.

Pro members see every patent with a maintenance fee coming due: number, title, status, the due date, and the date it lapses if the fee goes unpaid through the grace period.

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Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.