17 patents currently held

1 more in force is now held by another company

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Jul 2033. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Jul 2033

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033 2034 203520362037 203820392040 2041 2042204320442045

notable patents fee due within 90 days all others Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Biorefinery System, Methods and Compositions Thereof US 9,371,549

The most cited patent in this portfolio, cited by 25 later US patents, top 25% of utility patents granted in 2016 in our data. Protection runs to 2033.

Ends Jul 2033 · High confidence Also notable

Gas-Fed Fermentation Reactors, Systems and Processes Utilizing Gas/Liquid Separation Vessels US 10,689,610

Cited by 16 later US patents, top 25% of utility patents granted in 2020 in our data. Protection runs to 2038.

Ends Aug 2038 · High confidence Also notable

Gas-Fed Fermentation Reactors, Systems and Processes US 10,570,364

Cited by 14 later US patents, top 25% of utility patents granted in 2020 in our data. Protection runs to 2037.

Ends Aug 2037 · High confidence

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

2 fees due Apr 15 to 24, 2027 · next Apr 15
1 fee due May 19, 2027
The maintenance fee for Genetically Engineered Microorganisms for Biological Oxidation of Hydrocarbons (US 10,480,016) comes due May 19, 2027. Unpaid by Nov 19, 2027, it lapses early.
1 fee due Jun 10, 2027
The maintenance fee for Gas-Fed Fermentation Systems (US 10,501,714) comes due Jun 10, 2027. Unpaid by Dec 10, 2027, it lapses early.
1 fee due Jul 21, 2027
The maintenance fee for Gas-Fed Fermentation Reactors, Systems and Processes (US 10,538,730) comes due Jul 21, 2027. Unpaid by Jan 21, 2028, it lapses early.
1 fee due Aug 25, 2027
The maintenance fee for Gas-Fed Fermentation Reactors, Systems and Processes (US 10,570,364) comes due Aug 25, 2027. Unpaid by Feb 25, 2028, it lapses early.
1 fee due Sep 26, 2027
The maintenance fee for Gas-Fed Fermentation Reactors, Systems and Processes Utilizing Gas/Liquid Separation Vessels (US 11,939,567) comes due Sep 26, 2027. Unpaid by Mar 27, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

What they patent

The 5 largest of its 11 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Gas-Fed Fermentation Reactors, Systems and Processes Utilizing Gas/Liquid Separation Vessels	4 in force	to Aug 2038
Gas-Fed Fermentation Reactors, Systems and Processes	3 in force	to Aug 2037
Biorefinery System, Methods and Compositions Thereof	2 in force	to Jul 2033
Glycogen-Null Methanotrophs and Uses Thereof	1 in force	to Jan 2042
Gas-Fed Fermentation Reactors, Systems and Processes Utilizing a Vertical Flow Zone	1 in force	to Aug 2040

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 9,410,168	Biorefinery System, Methods and Compositions Thereof In force Ends no later than Jul 12, 2033 · Medium confidence	In force	Ends no later than Jul 12, 2033	Medium confidence
US 9,371,549	Biorefinery System, Methods and Compositions Thereof In force Term ends Jul 20, 2033 · High confidence	In force	Term ends Jul 20, 2033	High confidence
US 10,480,016	Genetically Engineered Microorganisms for Biological Oxidation of Hydrocarbons In force Term ends Oct 15, 2033 · High confidence	In force	Term ends Oct 15, 2033	High confidence
US 10,190,123	Engineering of Multi-Carbon Substrate Utilization Pathways in Methanotrophic Bacteria In force Term ends Oct 24, 2033 · High confidence	In force	Term ends Oct 24, 2033	High confidence
US 10,501,714	Gas-Fed Fermentation Systems In force Term ends May 26, 2034 · High confidence	In force	Term ends May 26, 2034	High confidence
US 10,273,446	Compositions and Methods for Recovery of Stranded Gas and Oil In force Term ends Jan 21, 2035 · High confidence	In force	Term ends Jan 21, 2035	High confidence
US 10,443,060	Nucleic Acids and Vectors for Use with Methanotrophic Bacteria In force Term ends Jun 18, 2035 · High confidence	In force	Term ends Jun 18, 2035	High confidence
US 10,538,730	Gas-Fed Fermentation Reactors, Systems and Processes In force Term ends Jun 16, 2037 · High confidence	In force	Term ends Jun 16, 2037	High confidence
US 10,570,364	Gas-Fed Fermentation Reactors, Systems and Processes In force Term ends Aug 17, 2037 · High confidence	In force	Term ends Aug 17, 2037	High confidence
US 12,116,563	Gas-Fed Fermentation Reactors, Systems and Processes In force Term ends Aug 17, 2037 · High confidence	In force	Term ends Aug 17, 2037	High confidence

10 of 17 patents shown.

Pro members see all 17.

Pro members: see all 17 patents

Also on record, not counted in the 17: 1 patent in force now held by others · 18 patents ended · 20 applications abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.

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

Export every term end as CSV · Pro

Calysta, Inc.