Maintenance fees coming due

Circ Inc

3 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Jun 10, 2027. Unpaid by Dec 10, 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 10,501,599	Methods for Recycling Cotton and Polyester Fibers from Waste Textiles Circ, Inc. In force Fee due Jun 10, 2027 Lapses if unpaid Dec 10, 2027 Term ends Jan 11, 2039 · High confidence	Circ, Inc.	In force	Jun 10, 2027	Dec 10, 2027	Term ends Jan 11, 2039	High confidence
US 10,603,651	Process and System for Producing Pulp, Energy, and Bioderivatives from Plant-Based and Recycled Materials Circ, Inc. In force Fee due Sep 30, 2027 Lapses if unpaid Mar 31, 2028 Term ends Jun 13, 2036 · High confidence	Circ, Inc.	In force	Sep 30, 2027	Mar 31, 2028	Term ends Jun 13, 2036	High confidence
US 9,328,312	Subcritical Water Assisted Oil Extraction and Green Coal Production from Oilseeds Circ, Inc. In force Fee due Nov 3, 2027 Lapses if unpaid May 3, 2028 Term ends Oct 15, 2033 · High confidence	Circ, Inc.	In force	Nov 3, 2027	May 3, 2028	Term ends Oct 15, 2033	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.