Where does Chang Gung University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Chang Gung University ranks #3,879 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Chang Gung University hold?

Chang Gung University holds 93 US utility patents granted 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 (top 8% of the corpus). This composite metric weighs portfolio volume (40%), grant 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, ranking #643 of 7,127 assignees active in that subclass. Grants appear in 69 CPC subclasses total.

Is Chang Gung University's patent grant rate increasing or decreasing?

Chang Gung University's recent grant velocity is +22% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-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 an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Chang Gung University

USPTO PatentsView assignee record - 93 granted patents across 69 technology areas, recorded in grant years 2015–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: A61B (DIAGNOSIS; SURGERY; Identification).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Chang ranks #3,879 of 49,997 tracked US assignees by granted-patent volume, with 93 patents across 69 technology areas.

#3,879
of 49,997 US assignees by volume: Top 8%
by Innovation Score (53.9/100): 9.2
avg claims per patent: +22%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3879 · Foreign Corporation #3,879 · 93 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-SMALL 93 grants
TOP-DECILE #3,879/49,997
PHOTO-FINISH Arrowhead Pharmaceut…
CPC-WIDE A61B · 69 areas
INNOV-PAR 53.9/100
CLAIMS-PAR 9.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +22% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Arrowhead Pharmaceuticals, Inc. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Chang’s 53.9 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 15.7 pts (29%) Velocity 7.7 pts (14%) Breadth 25.0 pts (46%) Claim depth 5.5 pts (10%)

Qualcomm Incorporated · highest

85
Creo Medical · near

54
Beijing E-Town… · near

54
Chang Gung University · this assignee

54
Dongguan Hongyu… · near

54
Mitsubishi Pencil · near

54
3D Lighting… · lowest

7

What this shows Chang's Innovation Score is 53.9/100 (top 8% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Chang?

Each dot is one of Chang’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Chang’s own 9.2 claims/patent is at or below the 9.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Chang vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

How Chang's grant cadence moved

Between 2020–2024, Chang Gung University received 50 grants versus 41 in 2015–2019 (+22% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2015 at 14 grants and bottomed in 2016 at 3. Lead class A61B accounts for 31.2% of the portfolio across 69 subclasses. Volume neighbours: Arrowhead Pharmaceuticals, Inc. (#3,875) and Fidlock GMBH (#3,883).

Chang's three-year grant acceleration

From 2019–2021 to 2022–2024, Chang Gung University moved from 27 to 31 grants (1.15x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Chang, neither rank-band nor same-CPC leaders (those blocks stay above). In A61B (Diagnosis), Chang ranks #643 of 7,127 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (54 here).

Beijing E-Town Semiconductor Technology Co., Ltd. 54 Mitsubishi Pencil Company, Limited 54 Dongguan Hongyu Plastic Co., Ltd. 54 Creo Medical Limited 54

Similar claim depth

Nearest assignees by average claims per patent (9.2 here).

Hakko Corporation 9.2 avg Guangdong Brunp Recycling Technology Co., Ltd. 9.2 avg Hunan Brunp Recycling Technology Co., Ltd. 9.2 avg Mitsubishi Heavy Industries Machinery Systems, Ltd. 9.2 avg

Chang's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% of 49,997 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%
2025partial year	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

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Chang Gung University's patent record in context - here's where to go next.

Chang Gung University's lead technology class is A61B (DIAGNOSIS; SURGERY; Identification), 31.2% of its portfolio - see every assignee active in that class. Explore A61B
Ranked #3,879 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Chang Gung University against Arrowhead Pharmaceuticals, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 53.9/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

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

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 by PlainPatent , US Patent Intelligence Editorial Process · 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.