Maintenance fees coming due
8 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 23, 2026. Unpaid by Jun 23, 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 9,061,951 | Biorenewable Naphtha Composition In force Fee due Dec 23, 2026 Lapses if unpaid Jun 23, 2027 · Medium confidence | Reg Synthetic Fuels, LLC | In force | Dec 23, 2026 | Jun 23, 2027 | Medium confidence | |
| US 9,102,080 | Low Cost Process for Manufacture of Form-Stable Phase Change Material In force Fee due Feb 11, 2027 Lapses if unpaid Aug 11, 2027 · High confidence | Reg Synthetic Fuels, LLC | In force | Feb 11, 2027 | Aug 11, 2027 | High confidence | |
| US 9,133,080 | Biorenewable Naphtha In force Fee due Mar 15, 2027 Lapses if unpaid Sep 15, 2027 · Medium confidence | Reg Synthetic Fuels, LLC | In force | Mar 15, 2027 | Sep 15, 2027 | Medium confidence | |
| US 11,788,030 | Method for the Pretreatment of a Biofuel Feedstock In force Fee due Apr 17, 2027 Lapses if unpaid Oct 18, 2027 · High confidence | Reg Synthetic Fuels, LLC | In force | Apr 17, 2027 | Oct 18, 2027 | High confidence | |
| US 9,163,183 | Removal of Solubilized Metals from Fischer-Tropsch Products In force Fee due Apr 20, 2027 Lapses if unpaid Oct 20, 2027 · High confidence | Reg Synthetic Fuels, LLC | In force | Apr 20, 2027 | Oct 20, 2027 | High confidence | |
| US 9,266,082 | Process for Increasing the Efficiency of Heat Removal from a Fischer-Tropsch Slurry Reactor In force Fee due Aug 23, 2027 Lapses if unpaid Feb 23, 2028 · High confidence | Reg Synthetic Fuels, LLC | In force | Aug 23, 2027 | Feb 23, 2028 | High confidence | |
| US 9,315,710 | Plastic Phase Change Material and Articles Made Therefrom In force Fee due Oct 19, 2027 Lapses if unpaid Apr 19, 2028 · High confidence | Reg Synthetic Fuels, LLC | In force | Oct 19, 2027 | Apr 19, 2028 | High confidence | |
| US 9,328,303 | Reducing Pressure Drop Buildup in Bio-Oil Hydroprocessing Reactors In force Fee due Nov 3, 2027 Lapses if unpaid May 3, 2028 · High confidence | Reg Synthetic Fuels, LLC | In force | Nov 3, 2027 | May 3, 2028 | High confidence |
8 of 8 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.