Where does Xiamen University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Xiamen University ranks #2,924 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 Xiamen University hold?

Xiamen University holds 131 US utility patents granted 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 (top 5% of the corpus). This composite metric weighs portfolio volume (40%), grant 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, ranking #352 of 7,163 assignees active in that subclass. Grants appear in 93 CPC subclasses total.

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

Xiamen University's recent grant velocity is +95% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Xiamen University's patents average 12.4 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Xiamen University

USPTO PatentsView assignee record - 131 granted patents across 93 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: A61K (Preparations FOR Medical, Dental OR Toiletry Purposes).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Xiamen ranks #2,924 of 49,997 tracked US assignees by granted-patent volume, with 131 patents across 93 technology areas.

#2,924
of 49,997 US assignees by volume: Top 5%
by Innovation Score (57.4/100): 12.4
avg claims per patent: +95%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2924 · Foreign Corporation #2,924 · 131 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 131 grants
TOP-DECILE #2,924/49,997
PHOTO-FINISH St Jude Medical
CPC-WIDE A61K · 93 areas
INNOV-PAR 57.4/100
CLAIMS-RICH 12.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +95% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: St. Jude Medical, LLC (±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 Xiamen’s 57.4 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 16.9 pts (29%) Velocity 8.1 pts (14%) Breadth 25.0 pts (44%) Claim depth 7.4 pts (13%)

Qualcomm Incorporated · highest

85
Unimicron Technology · near

57
Xiamen University · this assignee

57
Array · near

57
Gen Digital · near

57
Unison Industries · near

57
3D Lighting… · lowest

7

What this shows Xiamen's Innovation Score is 57.4/100 (top 5% 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 Xiamen?

Each dot is one of Xiamen’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). Xiamen’s own 12.4 claims/patent is at or below the 14.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Xiamen's grant cadence moved

Between 2020–2024, Xiamen University received 80 grants versus 41 in 2015–2019 (+95% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2022 at 22 grants and bottomed in 2015 at 2. Lead class A61K accounts for 45% of the portfolio across 93 subclasses. Volume neighbours: St. Jude Medical, LLC (#2,920) and Dalian Institute OF Chemical Physics, Chinese Academy OF Sciences (#2,928).

Xiamen's three-year grant acceleration

From 2019–2021 to 2022–2024, Xiamen University moved from 41 to 50 grants (1.22x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #759. See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Xiamen, neither rank-band nor same-CPC leaders (those blocks stay above). In A61K (Preparations FOR Medical), Xiamen ranks #352 of 7,163 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Unimicron Technology Corp. 57 Unison Industries, LLC 57 Gen Digital Inc. 57 Array Technologies, Inc. 57

Similar claim depth

Nearest assignees by average claims per patent (12.4 here).

Beijing University OF Posts AND Telecommunications 12.4 avg Chargepoint, Inc. 12.4 avg Sagemcom Broadband SAS 12.4 avg University Industry Foundation, Yonsei University 12.4 avg

Xiamen's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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

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%
2025partial year	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

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

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

Xiamen University's lead technology class is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes), 45% of its portfolio - see every assignee active in that class. Explore A61K
Ranked #2,924 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Xiamen University against St. Jude Medical, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 57.4/100 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.