Maintenance fees coming due

Project Canary, PBC

19 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Feb 15, 2027. Unpaid by Aug 16, 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 11,727,519	Air Quality Monitors Minimization System and Methods Project Canary, PBC In force Fee due Feb 15, 2027 Lapses if unpaid Aug 16, 2027 Term ends Feb 1, 2043 · High confidence	Project Canary, PBC	In force	Feb 15, 2027	Aug 16, 2027	Term ends Feb 1, 2043	High confidence
US 11,733,221	Apparatus and Methods for Reducing Fugitive Gas Emissions at Oil Facilities Project Canary, PBC In force Fee due Feb 22, 2027 Lapses if unpaid Aug 23, 2027 Term ends Jul 20, 2039 · High confidence	Project Canary, PBC	In force	Feb 22, 2027	Aug 23, 2027	Term ends Jul 20, 2039	High confidence
US 11,754,495	Air Quality Monitoring System and Method Project Canary, PBC In force Fee due Mar 12, 2027 Lapses if unpaid Sep 13, 2027 Term ends Sep 9, 2041 · Medium confidence	Project Canary, PBC	In force	Mar 12, 2027	Sep 13, 2027	Term ends Sep 9, 2041	Medium confidence
US 11,768,110	Air Quality Monitoring System and Method Project Canary, PBC In force Fee due Mar 26, 2027 Lapses if unpaid Sep 27, 2027 Term ends Nov 13, 2038 · High confidence	Project Canary, PBC	In force	Mar 26, 2027	Sep 27, 2027	Term ends Nov 13, 2038	High confidence
US 11,774,426	Emissions Detection System and Methods Project Canary, PBC In force Fee due Apr 3, 2027 Lapses if unpaid Oct 4, 2027 Term ends Jul 19, 2042 · High confidence	Project Canary, PBC	In force	Apr 3, 2027	Oct 4, 2027	Term ends Jul 19, 2042	High confidence
US 11,781,979	Air Quality Monitoring System and Method Project Canary, PBC In force Fee due Apr 10, 2027 Lapses if unpaid Oct 12, 2027 Term ends Sep 9, 2041 · Medium confidence	Project Canary, PBC	In force	Apr 10, 2027	Oct 12, 2027	Term ends Sep 9, 2041	Medium confidence
US 11,782,035	Apparatus and Methods for Reducing Fugitive Gas Emissions at Oil Facilities Project Canary, PBC In force Fee due Apr 10, 2027 Lapses if unpaid Oct 12, 2027 Term ends Jul 20, 2039 · Medium confidence	Project Canary, PBC	In force	Apr 10, 2027	Oct 12, 2027	Term ends Jul 20, 2039	Medium confidence
US 11,788,889	Air Quality Monitoring System and Method Project Canary, PBC In force Fee due Apr 17, 2027 Lapses if unpaid Oct 18, 2027 Term ends Nov 13, 2038 · High confidence	Project Canary, PBC	In force	Apr 17, 2027	Oct 18, 2027	Term ends Nov 13, 2038	High confidence
US 11,790,312	Supply-Chain Characteristic-Vectors Merchandising System and Methods Project Canary, PBC In force Fee due Apr 17, 2027 Lapses if unpaid Oct 18, 2027 Term ends Mar 23, 2043 · High confidence	Project Canary, PBC	In force	Apr 17, 2027	Oct 18, 2027	Term ends Mar 23, 2043	High confidence
US 11,802,860	Emissions Detection System and Methods Project Canary, PBC In force Fee due Apr 30, 2027 Lapses if unpaid Nov 1, 2027 Term ends Jul 19, 2042 · High confidence	Project Canary, PBC	In force	Apr 30, 2027	Nov 1, 2027	Term ends Jul 19, 2042	High confidence
9 more maintenance fees coming due in the 12 months from Nov 15, 2026 · Pro

10 of 19 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.

Upgrade to Pro

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