44 patents currently held

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

12 more records may belong here and await a decision; they are not counted.

The next term ends in Jul 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Jul 2027

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 2031 2032 203320342035 2036 203720382039204020412042204320442045

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

Systems and Methods for Ex Vivo Lung Care US 10,750,738

Cited by 93 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2030.

Ends May 2030 · High confidence Also notable

Systems and Methods for Ex Vivo Lung Care US 8,420,380

Cited by 150 later US patents, top 5% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.

Ends no later than Apr 2031 · Medium confidence Also notable

Method for Ex-Vivo Organ Care and for Using Lactate as an Indication of Donor Organ Status US 8,304,181

Cited by 154 later US patents, top 5% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.

Ends Mar 2028 · 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 Nov 30, 2026
The maintenance fee for Apparatus for Testing, Assessment, and Maintenance of Harvested Hearts for Transplanting (US 11,659,836) comes due Nov 30, 2026. Unpaid by Jun 1, 2027, it lapses early.
4 fees due Dec 16 to 25, 2026 · next Dec 16
2 fees due Jan 14 to 18, 2027 · next Jan 14
1 fee due Mar 24, 2027
The maintenance fee for Apparatus for Testing, Assessment, and Maintenance of Harvested Hearts for Transplanting (US 10,420,338) comes due Mar 24, 2027. Unpaid by Sep 24, 2027, it lapses early.
2 fees due Apr 8 to 17, 2027 · next Apr 8
1 fee due Jun 22, 2027
The maintenance fee for Systems and methods for ex-vivo organ care (US 9,215,867) comes due Jun 22, 2027. Unpaid by Dec 22, 2027, it lapses early.
1 fee due Jul 2, 2027
The maintenance fee for Organ Care Solution for Ex-Vivo Machine Perfusion of Donor Lungs (US 11,856,944) comes due Jul 2, 2027. Unpaid by Jan 3, 2028, it lapses early.
2 fees due Aug 2 to 20, 2027 · next Aug 2
3 fees due Oct 2 to 23, 2027 · next Oct 2

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

The 5 largest of its 20 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Systems and Methods for Ex Vivo Lung Care	5 in force	to Dec 2031
Ex Vivo Organ Care System	4 in force	to Sep 2035
Apparatus for Testing, Assessment, and Maintenance of Harvested Hearts for Transplanting	4 in force	to Jun 2033
Systems for monitoring and applying electrical currents in an organ perfusion system	4 in force	to Jul 2031
Apparatus and Method for Ex Vivo Lung Ventilation with a Varying Exterior Pressure	3 in force	to Feb 2040

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 10,327,443	Systems for Monitoring and Applying Electrical Currents in an Organ Perfusion System In force Ends no later than Jul 6, 2027 · Medium confidence	In force	Ends no later than Jul 6, 2027	Medium confidence
US 11,917,991	Systems for Monitoring and Applying Electrical Currents in an Organ Perfusion System In force Term ends Jul 6, 2027 · Medium confidence	In force	Term ends Jul 6, 2027	Medium confidence
US 12,207,649	Systems for Monitoring and Applying Electrical Currents in an Organ Perfusion System In force Ends no later than Jul 6, 2027 · Medium confidence	In force	Ends no later than Jul 6, 2027	Medium confidence
US 9,078,428	Systems, Methods, Compositions and Solutions for Perfusing an Organ In force Term ends Aug 23, 2027 · High confidence	In force	Term ends Aug 23, 2027	High confidence
US 8,822,203	Systems and Methods for Ex Vivo Organ Care In force Term ends Nov 20, 2027 · High confidence	In force	Term ends Nov 20, 2027	High confidence
US 9,215,867	Systems and methods for ex-vivo organ care In force Ends no later than Dec 29, 2027 · Medium confidence	In force	Ends no later than Dec 29, 2027	Medium confidence
US 8,465,970	Systems and methods for ex-vivo organ care In force Ends no later than Feb 12, 2028 · Medium confidence	In force	Ends no later than Feb 12, 2028	Medium confidence
US 8,585,380	Systems and methods for ex-vivo organ care In force Term ends Feb 12, 2028 · Medium confidence	In force	Term ends Feb 12, 2028	Medium confidence
US 8,304,181	Method for Ex-Vivo Organ Care and for Using Lactate as an Indication of Donor Organ Status In force Term ends Mar 6, 2028 · High confidence	In force	Term ends Mar 6, 2028	High confidence
US 9,516,875	Systems and Methods for Ex Vivo Lung Care In force Term ends Apr 8, 2028 · High confidence	In force	Term ends Apr 8, 2028	High confidence

10 of 44 patents shown.

Pro members see all 44.

Pro members: see all 44 patents

Also on record, not counted in the 44: 13 patents ended · 15 applications pending · 4 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

Transmedics, Inc.