USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Xiamen University

USPTO PatentsView assignee record - 131 granted patents across 93 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES).

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

Explore the portfolio See the ranking

131

Total patents granted

CPC technology areas

12.4

Avg claims per patent

+120%

5-year filing velocity

The verdict

Xiamen holds 131 US patents across 93 technology areas, rank #2,924 of 50,000 tracked assignees.

#2,924
of 50,000 US assignees by volume: Top 5%
by Innovation Score (57.4/100): 12.4
avg claims per patent: +120%
filing velocity, last 5 yrs

Portfolio overview

Xiamen University has been granted 131 US utility patents between 2015 and 2025, placing Xiamen University at rank #2,924 across all assignees tracked by PlainPatent. This portfolio spans 93 distinct Cooperative Patent Classification (CPC) subclasses, averaging 12.4 claims per patent with primary concentration in A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES). As a Foreign Corporation, Xiamen University is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Xiamen sits between St. Jude Medical, Llc (131 patents, rank #2,920) and Dalian Institute OF Chemical Physics, Chinese Academy OF Sciences (130 patents, rank #2,928) - the closest US assignees by grant volume. The composite Innovation Score of 57.4/100 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 90 grants, compared with 41 in the 2015–2019 window, a +120% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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. Xiamen University's 12.4 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 93 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Xiamen University against peers pursuing similar technology classes.

St Jude Medical

131
THE CODE

131
The Raymond

131
VKR Holding A/S

131
Xiamen University ◀

131
Alcon Research

130
Butterfly Network

130
Crown Packaging T…

130
Dalian Institute…

130

What this shows Xiamen holds 131 patents at rank #2,924, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Xiamen

By rank, the assignees closest to #2,924 in granted patent volume.

Leaders in A61K (Preparations FOR Medical)

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

Xiamen's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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

Xiamen University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	1.5%
2016	9	6.9%
2017	11	8.4%
2018	8	6.1%
2019	11	8.4%
2020	17	13.0%
2021	13	9.9%
2022	22	16.8%
2023	14	10.7%
2024	14	10.7%
2025	10	7.6%

Which technologies does Xiamen University patent most?

A61K - PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES 59

A61P - SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS 58

C07K - PEPTIDES 45

C12N - MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA 42

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 16

C07D - HETEROCYCLIC COMPOUNDS 12

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 8

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 8

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 8

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 7

C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE 7

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 6

G01R - MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 6

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 6

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 6

Top 15 of 93 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#2,924

Across all tracked assignees

Innovation Score

57.4 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 Xiamen University hold?

Xiamen University holds 131 US granted patents filed between 2015 and 2025, spanning 93 technology areas.

What is Xiamen University's Innovation Score?

Xiamen University has an Innovation Score of 57.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Xiamen University focus on?

Xiamen University's top technology area is A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES) with 59 patents. The company has filed patents in 93 CPC subclasses total.

Is Xiamen University's patent filing rate increasing or decreasing?

Xiamen University's recent filing velocity is +120% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Xiamen University's patents?

Xiamen University's patents average 12.4 claims each. This falls within the standard range, providing solid legal coverage.

How is the Xiamen 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

Xiamen's 131 grants land it in the top 5% 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 - Xiamen ranks #2,924 of 50,000. Top 50 holders
Most of this portfolio concentrates in A61K - see who else leads that technology area. A61K 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.