40 patents currently held

209 more in force are now held by other companies

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

The next term ends in Oct 2027. from the record

Of the 209 now held by other companies, 144 name Siemens Healthineers International AG as their current owner, and 65 more name another party. Each row says which.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Oct 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 203020312032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 20442045

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

Compact Proton Therapy System with Energy Selection Onboard a Rotatable Gantry US 9,012,866

The most cited patent in this portfolio, cited by 57 later US patents, top 10% of utility patents granted in 2015 in our data. Protection runs to 2033.

Ends Sep 2033 · High confidence Also notable

Method and System for Remote Monitoring of Proton Beam Emitting and Delivery System US 11,445,594

Cited by 4 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2041.

Ends May 2041 · High confidence Also notable

Spectrum Modeling Systems, Methods, and Devices for Particle Therapy Treatment Planning US 11,235,171

Cited by 4 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2038.

Ends Jul 2038 · High confidence

Formerly held, still cited

Notable

Methods and Apparatus for the Planning and Delivery of Radiation Treatments US 11,642,027

Cited by 38 later US patents, top 5% of utility patents granted in 2023 in our data. Protection runs to 2028.

now held by Siemens Healthineers International AG

Ends Jan 2028 · High confidence

Also notable

Streamlined, Guided On-Couch Adaptive Workflow US 10,799,716

Cited by 37 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2039.

now held by Siemens Healthineers International AG

Ends Jan 2039 · 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 Feb 28, 2027
The maintenance fee for Particle Therapy Systems, Devices, and Methods for Beam Transportation (US 11,738,213) comes due Feb 28, 2027. Unpaid by Aug 30, 2027, it lapses early.
2 fees due Apr 10 to 22, 2027 · next Apr 10
1 fee due May 26, 2027
The maintenance fee for Compact Lightweight High-Performance Proton Therapy Beamline (US 10,485,995) comes due May 26, 2027. Unpaid by Nov 26, 2027, it lapses early.
1 fee due Jul 14, 2027
The maintenance fee for Particle Therapy Systems, Devices, and Methods for Beam Transportation (US 10,532,229) comes due Jul 14, 2027. Unpaid by Jan 14, 2028, it lapses early.
3 fees due Sep 10 to 30, 2027 · next Sep 10

Which patents, and when each one lapses · Pro

Recent changes

11 of the patents on this record were granted since Aug 17, 2026
3 terms have ended since Aug 17, 2026

What they patent

The 5 largest of its 27 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Method and System for Remote Monitoring of Proton Beam Emitting and Delivery System	3 in force	to May 2041
Compact Proton Therapy System with Energy Selection Onboard a Rotatable Gantry	3 in force	to Sep 2033
Magnetic Monitoring of a Faraday Cup for an Ion Implanter	3 in force	to Jun 2029
Method and System for Remote Control of Proton Beam Emitting and Delivery System	2 in force	to Jan 2043
Modular Multi-Room Proton Therapy System	2 in force	to Nov 2041

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,521,691	Magnetic Monitoring of a Faraday Cup for an Ion Implanter held by Varian Semiconductor Equipment Associates, Inc. ("Vsea") In force Term ends Oct 1, 2027 · High confidence	In force	Term ends Oct 1, 2027	High confidence
US 7,579,602	Ion Implantation with a Collimator Magnet and a Neutral Filter Magnet held by Varian Semiconductor Equipment Associates, Inc. (Vsea) In force Term ends Nov 26, 2027 · High confidence	In force	Term ends Nov 26, 2027	High confidence
US 7,622,724	High Voltage Insulator for Preventing Instability in an Ion Implanter Due to Triple-Junction Breakdown held by Varian Semiconductor Equipment Associates, Inc. (Vsea) In force Term ends Jun 24, 2028 · High confidence	In force	Term ends Jun 24, 2028	High confidence
US 7,820,987	Predicting Dose Repeatability in an Ion Implantation held by Varian Semiconductor Equipment Associates, Inc. (Vsea) In force Term ends Jun 4, 2029 · High confidence	In force	Term ends Jun 4, 2029	High confidence
US 8,933,421	Halo Monitor in Rotatable Gantry for Particle Beam Positioning held by Varian Medical Systems Particle Therapy GmbH & Co. KG In force Term ends Jan 25, 2030 · High confidence	In force	Term ends Jan 25, 2030	High confidence
US 10,275,895	Mechanism for Advanced Structure Generation and Editing held by Varian Medical Systems International AG In force Term ends Apr 3, 2032 · Medium confidence	In force	Term ends Apr 3, 2032	Medium confidence
US 8,937,003	Technique for Ion Implanting a Target held by Varian Semiiconductor Equipment Associates, Inc. In force Term ends Dec 7, 2032 · High confidence	In force	Term ends Dec 7, 2032	High confidence
US 9,012,866	Compact Proton Therapy System with Energy Selection Onboard a Rotatable Gantry held by Varian Medical Systems, Inc. and Varian Medical Systems Particle Therapy GmbH & Co. KG In force Term ends Sep 23, 2033 · High confidence	In force	Term ends Sep 23, 2033	High confidence
US 9,283,407	Compact Proton Therapy System with Energy Selection Onboard a Rotatable Gantry held by Varian Medical Systems Particle Therapy GmbH & Co. KG In force Term ends Sep 23, 2033 · High confidence	In force	Term ends Sep 23, 2033	High confidence
US 9,757,592	Compact Proton Therapy System with Energy Selection Onboard a Rotatable Gantry held by Varian Medical Systems Particle Therapy GmbH & Co. KG In force Term ends Sep 23, 2033 · High confidence	In force	Term ends Sep 23, 2033	High confidence

10 of 40 patents shown.

Pro members see all 40.

Pro members: see all 40 patents

Also on record, not counted in the 40: 209 patents in force now held by others · 185 patents ended · 54 applications pending · 59 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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Varian, Inc.