Maintenance fees coming due

Profusa, Inc.

4 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Feb 20, 2027. Unpaid by Aug 20, 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 10,383,557	Oxygen Sensors Profusa, Inc. In force Fee due Feb 20, 2027 Lapses if unpaid Aug 20, 2027 Term ends Mar 13, 2034 · High confidence	Profusa, Inc.	In force	Feb 20, 2027	Aug 20, 2027	Term ends Mar 13, 2034	High confidence
US 10,463,287	Tissue-Integrating Sensors Profusa, Inc. In force Fee due May 5, 2027 Lapses if unpaid Nov 5, 2027 Term ends Oct 6, 2031 · High confidence	Profusa, Inc.	In force	May 5, 2027	Nov 5, 2027	Term ends Oct 6, 2031	High confidence
US 11,866,588	Polymerizable Near-Ir Dyes Profusa, Inc. In force Fee due Jul 9, 2027 Lapses if unpaid Jan 10, 2028 Term ends Apr 9, 2040 · High confidence	Profusa, Inc.	In force	Jul 9, 2027	Jan 10, 2028	Term ends Apr 9, 2040	High confidence
US 11,903,702	Multi-Analyte Sensing Tissue-Integrating Sensors Profusa, Inc. In force Fee due Aug 20, 2027 Lapses if unpaid Feb 22, 2028 Term ends Mar 14, 2039 · High confidence	Profusa, Inc.	In force	Aug 20, 2027	Feb 22, 2028	Term ends Mar 14, 2039	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.