Maintenance fees coming due

Flodesign Sonics, Inc.

9 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 10,308,928	System for Generating High Concentration Factors for Low Cell Density Suspensions Flodesign Sonics, Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Mar 15, 2033 · High confidence	Flodesign Sonics, Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Mar 15, 2033	High confidence
US 10,322,949	Transducer and Reflector Configurations for an Acoustophoretic Device Flodesign Sonics, Inc. In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 Term ends May 21, 2033 · High confidence	Flodesign Sonics, Inc.	In force	Dec 18, 2026	Jun 21, 2027	Term ends May 21, 2033	High confidence
US 10,350,514	Separation of Multi-Component Fluid Through Ultrasonic Acoustophoresis Flodesign Sonics, Inc. In force Fee due Jan 16, 2027 Lapses if unpaid Jul 16, 2027 Term ends Mar 15, 2033 · High confidence	Flodesign Sonics, Inc.	In force	Jan 16, 2027	Jul 16, 2027	Term ends Mar 15, 2033	High confidence
US 11,708,572	Acoustic Cell Separation Techniques and Processes Flodesign Sonics, Inc. In force Fee due Jan 25, 2027 Lapses if unpaid Jul 26, 2027 Term ends Jan 3, 2038 · High confidence	Flodesign Sonics, Inc.	In force	Jan 25, 2027	Jul 26, 2027	Term ends Jan 3, 2038	High confidence
US 10,370,635	Acoustic Separation of T Cells Flodesign Sonics, Inc. In force Fee due Feb 6, 2027 Lapses if unpaid Aug 6, 2027 Term ends Nov 16, 2033 · High confidence	Flodesign Sonics, Inc.	In force	Feb 6, 2027	Aug 6, 2027	Term ends Nov 16, 2033	High confidence
US 10,427,956	Ultrasound and Acoustophoresis for Water Purification Flodesign Sonics, Inc. In force Fee due Apr 1, 2027 Lapses if unpaid Oct 1, 2027 Term ends Nov 16, 2030 · High confidence	Flodesign Sonics, Inc.	In force	Apr 1, 2027	Oct 1, 2027	Term ends Nov 16, 2030	High confidence
US 9,228,183	Acoustophoretic Separation Technology Using Multi-Dimensional Standing Waves Flodesign Sonics, Inc. In force Fee due Jul 5, 2027 Lapses if unpaid Jan 5, 2028 Term ends Mar 15, 2033 · High confidence	Flodesign Sonics, Inc.	In force	Jul 5, 2027	Jan 5, 2028	Term ends Mar 15, 2033	High confidence
US 10,550,382	Acoustophoretic Device for Angled Wave Particle Deflection Flodesign Sonics, Inc. In force Fee due Aug 4, 2027 Lapses if unpaid Feb 4, 2028 Term ends May 11, 2036 · High confidence	Flodesign Sonics, Inc.	In force	Aug 4, 2027	Feb 4, 2028	Term ends May 11, 2036	High confidence
US 9,272,234	Separation of Multi-Component Fluid Through Ultrasonic Acoustophoresis Flodesign Sonics, Inc. In force Fee due Sep 1, 2027 Lapses if unpaid Mar 1, 2028 Term ends Jul 5, 2033 · High confidence	Flodesign Sonics, Inc.	In force	Sep 1, 2027	Mar 1, 2028	Term ends Jul 5, 2033	High confidence

9 of 9 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.