USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Chang GUNG University

USPTO PatentsView assignee record - 93 granted patents across 69 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61B (DIAGNOSIS; SURGERY; IDENTIFICATION).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

9.2

Avg claims per patent

+27%

5-year filing velocity

The verdict

Chang holds 93 US patents across 69 technology areas, rank #3,879 of 50,000 tracked assignees.

#3,879
of 50,000 US assignees by volume: Top 8%
by Innovation Score (53.9/100): 9.2
avg claims per patent: +27%
filing velocity, last 5 yrs

Portfolio overview

Chang GUNG University has been granted 93 US utility patents between 2015 and 2025, placing Chang GUNG University at rank #3,879 across all assignees tracked by PlainPatent. This portfolio spans 69 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.2 claims per patent with primary concentration in A61B (DIAGNOSIS; SURGERY; IDENTIFICATION). As a Foreign Corporation, Chang GUNG University is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Chang sits between Arrowhead Pharmaceuticals, Inc. (93 patents, rank #3,875) and Fidlock Gmbh (93 patents, rank #3,883) - the closest US assignees by grant volume. The composite Innovation Score of 53.9/100 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 52 grants, compared with 41 in the 2015–2019 window, a +27% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The Foreign 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. Chang GUNG University's 9.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 69 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Chang GUNG University against peers pursuing similar technology classes.

Arrowhead Pharmac…

93
Avon Products

93
Blackpin

93
Bundesdruckerei

93
Cknapp Sales

93
CSP

93
Elbee Pty

93
Fidlock

93
Chang GUNG Univer… ◀

93

What this shows Chang holds 93 patents at rank #3,879, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Chang

By rank, the assignees closest to #3,879 in granted patent volume.

Leaders in A61B (Diagnosis)

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

Chang's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% 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

Chang GUNG University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	14	15.1%
2016	3	3.2%
2017	12	12.9%
2018	4	4.3%
2019	8	8.6%
2020	10	10.8%
2021	9	9.7%
2022	14	15.1%
2023	9	9.7%
2024	8	8.6%
2025	2	2.2%

Which technologies does Chang GUNG University patent most?

A61B - DIAGNOSIS; SURGERY; IDENTIFICATION 29

A61K - PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES 26

A61P - SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS 22

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 17

C12N - MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA 11

G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL 9

C12Q - MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS ; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES 6

C07K - PEPTIDES 6

G16H - HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA 5

A61N - ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY 4

C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS 3

H10D - INORGANIC ELECTRIC SEMICONDUCTOR DEVICES 3

B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES 3

B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS 3

A01N - PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF ; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES ; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS 2

Top 15 of 69 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#3,879

Across all tracked assignees

Innovation Score

53.9 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 Chang GUNG University hold?

Chang GUNG University holds 93 US granted patents filed between 2015 and 2025, spanning 69 technology areas.

What is Chang GUNG University's Innovation Score?

Chang GUNG University has an Innovation Score of 53.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Chang GUNG University focus on?

Chang GUNG University's top technology area is A61B (DIAGNOSIS; SURGERY; IDENTIFICATION) with 29 patents. The company has filed patents in 69 CPC subclasses total.

Is Chang GUNG University's patent filing rate increasing or decreasing?

Chang GUNG University's recent filing velocity is +27% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Chang GUNG University's patents?

Chang GUNG University's patents average 9.2 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Chang GUNG University 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

Chang's 93 grants land it in the top 8% 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 - Chang ranks #3,879 of 50,000. Top 50 holders
Most of this portfolio concentrates in A61B - see who else leads that technology area. A61B 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.