Overall rank by patents
#45,807
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Chang Gung Memorial Hospital
USPTO PatentsView assignee record - 5 granted patents across 8 technology areas, active 2016–2023. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS).
5
Total patents granted
8
CPC technology areas
5.4
Avg claims per patent
-33%
5-year filing velocity
The verdict
Chang holds 5 US patents across 8 technology areas, rank #45,807 of 50,000 tracked assignees.
- #45,807
- of 50,000 US assignees by volume
- Top 81%
- by Innovation Score (26.1/100)
- 5.4
- avg claims per patent
- -33%
- filing velocity, last 5 yrs
Portfolio overview
Chang Gung Memorial Hospital has been granted 5 US utility patents between 2016 and 2023, placing Chang Gung Memorial Hospital at rank #45,807 across all assignees tracked by PlainPatent. This portfolio spans 8 distinct Cooperative Patent Classification (CPC) subclasses, averaging 5.4 claims per patent with primary concentration in A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS). As a Foreign Corporation, Chang Gung Memorial Hospital is one of the more focused assignees in the PatentsView dataset. By volume, Chang sits between Cerora, Inc. (5 patents, rank #45,803) and Changjiang River Scientific Research Institute Of Changjiang Water Resources Commission (5 patents, rank #45,811) - the closest US assignees by grant volume. The composite Innovation Score of 26.1/100 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 2 grants, compared with 3 in the 2015–2019 window, a -33% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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 Memorial Hospital's 5.4 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 8 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Chang Gung Memorial Hospital against peers pursuing similar technology classes.
Who files at Chang's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- Cerora
Cerora, Inc.
5 patents
- Certa Dose
Certa Dose, Inc.
5 patents
- Certify
Certify, Inc.
5 patents
- Champion Bus
Champion Bus, Inc.
5 patents
- Changde Yixiang I…
Changde Yixiang Industrial Co., Ltd.
5 patents
- Change Up
Change Up Inc.
5 patents
- Changhua Christia…
Changhua Christian Hospital
5 patents
- Changjiang River…
Changjiang River Scientific Research Institute of Changjiang Water Resources Commission
5 patents
- Chang Gung Memori… ◀
Chang Gung Memorial Hospital
5 patents
What this shows Chang holds 5 patents at rank #45,807, 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 #45,807 in granted patent volume.
- Cerora, Inc. #45,803 · 5 patents
- Certa Dose, Inc. #45,804 · 5 patents
- Certify, Inc. #45,805 · 5 patents
- Champion Bus, Inc. #45,806 · 5 patents
- Changde Yixiang Industrial Co., Ltd. #45,808 · 5 patents
- Change Up Inc. #45,809 · 5 patents
- Changhua Christian Hospital #45,810 · 5 patents
- Changjiang River Scientific Research Institute Of Changjiang Water Resources Commission #45,811 · 5 patents
Leaders in A61P (Specific Therapeutic Activity OF Chemical Compounds OR Me…)
Other assignees with the most granted patents in Chang's primary technology class.
- The Regents Of The University Of California 1,387 in class
- Novartis Ag 1,071 in class
- Merck Sharp & Dohme Llc 889 in class
- Bristol-myers Squibb Company 879 in class
- Genentech, Inc. 789 in class
- The Board Of Regents Of The University Of Texas System 744 in class
- Hoffmann-la Roche Inc. 722 in class
- The United States Of America, As Represented By The Secretary, Department Of Health And Human Services 721 in class
Chang's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
26 Top 81% higher than 19% 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
Grants by year
Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.
View data table
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2016 | 1 | 20.0% |
| 2017 | 1 | 20.0% |
| 2018 | 1 | 20.0% |
| 2021 | 1 | 20.0% |
| 2023 | 1 | 20.0% |
Which technologies does Chang Gung Memorial Hospital patent most?
Top 8 of 8 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Focused
Claim Depth Simple
Velocity Declining
Frequently Asked Questions
How many patents does Chang Gung Memorial Hospital hold?
Chang Gung Memorial Hospital holds 5 US granted patents filed between 2016 and 2023, spanning 8 technology areas.
What is Chang Gung Memorial Hospital's Innovation Score?
Chang Gung Memorial Hospital has an Innovation Score of 26.1 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 Memorial Hospital focus on?
Chang Gung Memorial Hospital's top technology area is A61P (SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS) with 4 patents. The company has filed patents in 8 CPC subclasses total.
Is Chang Gung Memorial Hospital's patent filing rate increasing or decreasing?
Chang Gung Memorial Hospital's recent filing velocity is -33% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for Chang Gung Memorial Hospital's patents?
Chang Gung Memorial Hospital's patents average 5.4 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the Chang Gung Memorial Hospital 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 5 grants land it in the top 81% 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 #45,807 of 50,000. Top 50 holders
- Most of this portfolio concentrates in A61P - see who else leads that technology area. A61P 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.
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.