Maintenance fees coming due

Calysta, Inc.

7 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Apr 15, 2027. Unpaid by Oct 15, 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 10,443,060	Nucleic Acids and Vectors for Use with Methanotrophic Bacteria Calysta, Inc. In force Fee due Apr 15, 2027 Lapses if unpaid Oct 15, 2027 Term ends Jun 18, 2035 · High confidence	Calysta, Inc.	In force	Apr 15, 2027	Oct 15, 2027	Term ends Jun 18, 2035	High confidence
US 11,795,428	Gas-Fed Fermentation Reactors, Systems and Processes Utilizing a Vertical Flow Zone Calysta, Inc. In force Fee due Apr 24, 2027 Lapses if unpaid Oct 25, 2027 Term ends Aug 21, 2040 · High confidence	Calysta, Inc.	In force	Apr 24, 2027	Oct 25, 2027	Term ends Aug 21, 2040	High confidence
US 10,480,016	Genetically Engineered Microorganisms for Biological Oxidation of Hydrocarbons Calysta, Inc. In force Fee due May 19, 2027 Lapses if unpaid Nov 19, 2027 Term ends Oct 15, 2033 · High confidence	Calysta, Inc.	In force	May 19, 2027	Nov 19, 2027	Term ends Oct 15, 2033	High confidence
US 10,501,714	Gas-Fed Fermentation Systems Calysta, Inc. In force Fee due Jun 10, 2027 Lapses if unpaid Dec 10, 2027 Term ends May 26, 2034 · High confidence	Calysta, Inc.	In force	Jun 10, 2027	Dec 10, 2027	Term ends May 26, 2034	High confidence
US 10,538,730	Gas-Fed Fermentation Reactors, Systems and Processes Calysta, Inc. In force Fee due Jul 21, 2027 Lapses if unpaid Jan 21, 2028 Term ends Jun 16, 2037 · High confidence	Calysta, Inc.	In force	Jul 21, 2027	Jan 21, 2028	Term ends Jun 16, 2037	High confidence
US 10,570,364	Gas-Fed Fermentation Reactors, Systems and Processes Calysta, Inc. In force Fee due Aug 25, 2027 Lapses if unpaid Feb 25, 2028 Term ends Aug 17, 2037 · High confidence	Calysta, Inc.	In force	Aug 25, 2027	Feb 25, 2028	Term ends Aug 17, 2037	High confidence
US 11,939,567	Gas-Fed Fermentation Reactors, Systems and Processes Utilizing Gas/Liquid Separation Vessels Calysta, Inc. In force Fee due Sep 26, 2027 Lapses if unpaid Mar 27, 2028 Term ends Aug 13, 2038 · High confidence	Calysta, Inc.	In force	Sep 26, 2027	Mar 27, 2028	Term ends Aug 13, 2038	High confidence

7 of 7 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.