17 patents currently held

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

The next term ends in Sep 2038. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Sep 2038

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026202720282029203020312032203320342035203620372038 2039 2040 2041 2042204320442045

notable patents 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.

Notable patents

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

Notable

Oligonucleotide Encoded Chemical Libraries US 10,981,170

The most cited patent in this portfolio, cited by 16 later US patents, top 10% of utility patents granted in 2021 in our data. Protection runs to 2038.

Ends Sep 2038 · High confidence Also notable

Oligonucleotide Encoded Chemical Libraries US 11,084,037

The most cited patent in this portfolio, cited by 16 later US patents, top 10% of utility patents granted in 2021 in our data. Protection runs to 2039.

Ends Aug 2039 · High confidence Also notable

Fluidic Device US 11,642,675

The newest of the three, granted 2023. It anchors the portfolio to 2041, later than anything else here.

Ends Jun 2041 · 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 May 7, 2027
The maintenance fee for Quinazolinone Compounds and Related Compounds (US 11,807,620) comes due May 7, 2027. Unpaid by Nov 8, 2027, it lapses early.
1 fee due Jul 23, 2027
The maintenance fee for Aryl Compounds and Pharmaceutical Compositions That Modulate IKZF2 (US 11,878,968) comes due Jul 23, 2027. Unpaid by Jan 24, 2028, it lapses early.
1 fee due Aug 27, 2027
The maintenance fee for Caps for Assay Devices (US 11,911,760) comes due Aug 27, 2027. Unpaid by Feb 28, 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 7 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Oligonucleotide Encoded Chemical Libraries (2019)	5 in force	to Mar 2041
Oligonucleotide Encoded Chemical Libraries (2018)	4 in force	to Aug 2039
Fluidic Device	2 in force	to Sep 2042
Caps for Assay Devices	2 in force	to May 2040
Assay Devices for Combinatorial Libraries	2 in force	to Jan 2040

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 10,828,643	Oligonucleotide Encoded Chemical Libraries In force Term ends Sep 24, 2038 · Medium confidence	In force	Term ends Sep 24, 2038	Medium confidence
US 10,946,383	Oligonucleotide Encoded Chemical Libraries In force Term ends Sep 24, 2038 · High confidence	In force	Term ends Sep 24, 2038	High confidence
US 10,981,170	Oligonucleotide Encoded Chemical Libraries In force Term ends Sep 24, 2038 · High confidence	In force	Term ends Sep 24, 2038	High confidence
US 12,030,057	Oligonucleotide Encoded Chemical Libraries In force Ends no later than Sep 24, 2038 · Medium confidence	In force	Ends no later than Sep 24, 2038	Medium confidence
US 11,577,249	Oligonucleotide Encoded Chemical Libraries In force Term ends Oct 11, 2038 · High confidence	In force	Term ends Oct 11, 2038	High confidence
US 12,629,683	Oligonucleotide Encoded Chemical Libraries In force Term ends Mar 26, 2039 · Medium confidence	In force	Term ends Mar 26, 2039	Medium confidence
US 11,084,037	Oligonucleotide Encoded Chemical Libraries In force Term ends Aug 31, 2039 · High confidence	In force	Term ends Aug 31, 2039	High confidence
US 11,027,272	Transfer Dispensers for Assay Devices In force Term ends Jan 28, 2040 · High confidence	In force	Term ends Jan 28, 2040	High confidence
US 11,040,343	Caps for Assay Devices In force Term ends Jan 28, 2040 · High confidence	In force	Term ends Jan 28, 2040	High confidence
US 11,305,288	Assay Devices for Combinatorial Libraries In force Term ends Jan 28, 2040 · High confidence	In force	Term ends Jan 28, 2040	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: 13 applications pending · 2 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.

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

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Plexium, Inc.