21 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 Dec 2035. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Dec 2035

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026202720282029203020312032203320342035 2036 2037 2038 2039 2040 20412042204320442045

notable patents fee due within 90 days all others Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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

Microorganisms Programmed to Produce Immune Modulators and Anti-Cancer Therapeutics in Tumor Cells US 11,723,932

Cited by 25 later US patents, top 5% of utility patents granted in 2023 in our data. Protection runs to 2039.

Ends Oct 2039 · High confidence Also notable

Microorganisms Engineered to Reduce Hyperphenylalaninemia US 11,766,463

Granted 2023. Computed term ends 2041.

Ends Mar 2041 · High confidence Also notable

Bacteria for the Treatment of Disorders US 12,545,886

Granted 2026. Too new for citation comparison; protection runs to 2038. A terminal disclaimer caps this term to an earlier patent's.

Ends Jun 2038 · 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.

1 fee due Dec 27, 2026
The maintenance fee for Bacteria Engineered to Treat Diseases that Benefit from Reduced Gut Inflammation and/or Tightened Gut Mucosal Barrier (US 11,685,925) comes due Dec 27, 2026. Unpaid by Jun 28, 2027, it lapses early.
1 fee due Feb 15, 2027
The maintenance fee for Microorganisms Programmed to Produce Immune Modulators and Anti-Cancer Therapeutics in Tumor Cells (US 11,723,932) comes due Feb 15, 2027. Unpaid by Aug 16, 2027, it lapses early.
1 fee due Mar 26, 2027
The maintenance fee for Microorganisms Engineered to Reduce Hyperphenylalaninemia (US 11,766,463) comes due Mar 26, 2027. Unpaid by Sep 27, 2027, it lapses early.
1 fee due Jun 19, 2027
The maintenance fee for Bacteria Engineered to Treat Diseases Associated with Hyperammonemia (US 11,845,964) comes due Jun 19, 2027. Unpaid by Dec 20, 2027, it lapses early.
2 fees due Jul 23 to 30, 2027 · next Jul 23
1 fee due Aug 13, 2027
The maintenance fee for Bacteria Engineered to Treat Metabolic Diseases (US 11,896,627) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
1 fee due Oct 7, 2027
The maintenance fee for Bacteria Engineered to Reduce Hyperphenylalaninemia (US 10,610,546) comes due Oct 7, 2027. Unpaid by Apr 7, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 17, 2026
1 term has ended since Aug 17, 2026

What they patent

Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.

Bacteria Engineered to Treat Diseases Associated with Hyperammonemia	15 in force	to Oct 2039
Microorganisms Engineered to Reduce Hyperphenylalaninemia	2 in force	to Mar 2041
Bacteria for the Treatment of Disorders	2 in force	to Feb 2040
Engineered Microorganisms	1 in force	to Jul 2043
Enumeration of Genetically Engineered Microorganisms by Live Cell Counting Techniques	1 in force	to Mar 2043

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 9,487,764	Bacteria Engineered to Treat Diseases Associated with Hyperammonemia In force Term ends Dec 4, 2035 · High confidence	In force	Term ends Dec 4, 2035	High confidence
US 10,933,102	Bacteria Engineered to Treat a Disease or Disorder In force Ends no later than Dec 4, 2035 · Low confidence	In force	Ends no later than Dec 4, 2035	Low confidence
US 11,618,894	Bacteria Engineered to Reduce Hyperphenylalaninemia In force Term ends Dec 4, 2035 · High confidence	In force	Term ends Dec 4, 2035	High confidence
US 11,845,964	Bacteria Engineered to Treat Diseases Associated with Hyperammonemia In force Term ends Dec 4, 2035 · Medium confidence	In force	Term ends Dec 4, 2035	Medium confidence
US 12,409,195	Bacteria Engineered to Reduce Hyperphenylalaninemia In force Term ends Dec 4, 2035 · Medium confidence	In force	Term ends Dec 4, 2035	Medium confidence
US 11,896,627	Bacteria Engineered to Treat Metabolic Diseases In force Term ends Dec 21, 2035 · High confidence	In force	Term ends Dec 21, 2035	High confidence
US 10,273,489	Bacteria Engineered to Treat Diseases That Benefit from Reduced Gut Inflammation And/Or Tightened Gut Mucosal Barrier In force Ends no later than Dec 22, 2035 · Medium confidence	In force	Ends no later than Dec 22, 2035	Medium confidence
US 11,685,925	Bacteria Engineered to Treat Diseases that Benefit from Reduced Gut Inflammation and/or Tightened Gut Mucosal Barrier In force Term ends Dec 26, 2035 · High confidence	In force	Term ends Dec 26, 2035	High confidence
US 11,291,693	Bacteria Engineered to Treat Metabolic Diseases In force Term ends Jan 1, 2036 · High confidence	In force	Term ends Jan 1, 2036	High confidence
US 9,943,555	Bacteria Engineered to Reduce Hyperphenylalaninemia In force Ends no later than May 13, 2036 · Medium confidence	In force	Ends no later than May 13, 2036	Medium confidence

10 of 21 patents shown.

Pro members see all 21.

Pro members: see all 21 patents

Also on record, not counted in the 21: 1 patent in force now held by others · 5 patents ended · 6 applications pending · 36 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.

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Synlogic Operating Company, Inc.