USPTO 2015–2025 USPTO PatentsView US Corporation

ZOLL Circulation, Inc.

USPTO PatentsView assignee record - 143 granted patents across 27 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61F (FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICE).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

143

Total patents granted

CPC technology areas

15.7

Avg claims per patent

-4%

5-year filing velocity

The verdict

ZOLL holds 143 US patents across 27 technology areas, rank #2,718 of 50,000 tracked assignees.

#2,718
of 50,000 US assignees by volume: Top 12%
by Innovation Score (51.3/100): 15.7
avg claims per patent: -4%
filing velocity, last 5 yrs

Portfolio overview

ZOLL Circulation, Inc. has been granted 143 US utility patents between 2015 and 2025, placing ZOLL Circulation, Inc. at rank #2,718 across all assignees tracked by PlainPatent. This portfolio spans 27 distinct Cooperative Patent Classification (CPC) subclasses, averaging 15.7 claims per patent with primary concentration in A61F (FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICE). As a US Corporation, ZOLL Circulation, Inc. is one of the more focused assignees in the PatentsView dataset. By volume, ZOLL sits between Stmicroelectronics (alps) SAS (143 patents, rank #2,714) and Fondazione Istituto Italiano DI Tecnologia (142 patents, rank #2,722) - the closest US assignees by grant volume. The composite Innovation Score of 51.3/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 70 grants, compared with 73 in the 2015–2019 window, a -4% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. ZOLL Circulation, Inc.'s 15.7 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 27 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark ZOLL Circulation, Inc. against peers pursuing similar technology classes.

Stmicroelectronic…

143
Taiwan FU Hsing I…

143
Teleflex Medical…

143
Tele Tracking

143
ZOLL Circulation ◀

143
Coopervision Inte…

142
Cohere

142
DTS

142
Fondazione Istitu…

142

What this shows ZOLL holds 143 patents at rank #2,718, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near ZOLL

By rank, the assignees closest to #2,718 in granted patent volume.

Leaders in A61F (Filters Implantable INTO Blood Vessels)

Other assignees with the most granted patents in ZOLL's primary technology class.

ZOLL's Innovation Score vs. every tracked assignee

Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)

51 Top 12% higher than 88% of 50,000 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

ZOLL Circulation, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	10	7.0%
2016	28	19.6%
2017	16	11.2%
2018	10	7.0%
2019	9	6.3%
2020	21	14.7%
2021	7	4.9%
2022	12	8.4%
2023	11	7.7%
2024	12	8.4%
2025	7	4.9%

Which technologies does ZOLL Circulation, Inc. patent most?

A61F - FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRS 86

A61M - DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY ; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY ; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR 43

A61H - PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY 40

A61B - DIAGNOSIS; SURGERY; IDENTIFICATION 25

H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 14

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 10

Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS 8

G06F - ELECTRIC DIGITAL DATA PROCESSING 7

A61N - ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY 6

F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 6

F04B - POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 6

H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 5

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 5

A61G - TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS ; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES 4

F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 4

Top 15 of 27 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Declining

Where it ranks

Overall rank by patents

#2,718

Across all tracked assignees

Innovation Score

51.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does ZOLL Circulation, Inc. hold?

ZOLL Circulation, Inc. holds 143 US granted patents filed between 2015 and 2025, spanning 27 technology areas.

What is ZOLL Circulation, Inc.'s Innovation Score?

ZOLL Circulation, Inc. has an Innovation Score of 51.3 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does ZOLL Circulation, Inc. focus on?

ZOLL Circulation, Inc.'s top technology area is A61F (FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRS) with 86 patents. The company has filed patents in 27 CPC subclasses total.

Is ZOLL Circulation, Inc.'s patent filing rate increasing or decreasing?

ZOLL Circulation, Inc.'s recent filing velocity is -4% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for ZOLL Circulation, Inc.'s patents?

ZOLL Circulation, Inc.'s patents average 15.7 claims each. This falls within the standard range, providing solid legal coverage.

How is the ZOLL Circulation, Inc. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

How to use this portfolio

ZOLL's 143 grants land it in the top 12% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - ZOLL ranks #2,718 of 50,000. Top 50 holders
Most of this portfolio concentrates in A61F - see who else leads that technology area. A61F leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.