Where does Otsuka Medical Devices Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Otsuka Medical Devices Co., Ltd. ranks #14,838 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 Otsuka Medical Devices Co., Ltd. hold?

Otsuka Medical Devices Co., Ltd. holds 20 US utility patents granted between 2020 and 2025, spanning 11 technology areas.

What is Otsuka Medical Devices Co., Ltd.'s Innovation Score?

Otsuka Medical Devices Co., Ltd. has an Innovation Score of 50.6 out of 100 (top 13% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Otsuka Medical Devices Co., Ltd. focus on?

Otsuka Medical Devices Co., Ltd.'s top technology area is A61B (DIAGNOSIS; SURGERY; Identification) with 7 patents, ranking #2,341 of 7,127 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

Is Otsuka Medical Devices Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Otsuka Medical Devices Co., Ltd..

What does claim depth mean for Otsuka Medical Devices Co., Ltd.'s patents?

Otsuka Medical Devices Co., Ltd.'s patents average 13.9 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 Otsuka Medical Devices Co., Ltd. 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

Otsuka Medical Devices Co., Ltd.

USPTO PatentsView assignee record - 20 granted patents across 11 technology areas, recorded in grant years 2020–2025. 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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The verdict

According to USPTO PatentsView, Otsuka ranks #14,838 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 11 technology areas.

#14,838
of 49,997 US assignees by volume: Top 13%
by Innovation Score (50.6/100): 13.9
avg claims per patent

USPTO PatentsView assignee plate

Corpus R14838 · Foreign Corporation #14,838 · 20 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-SMALL 20 grants
MID-PACK #14,838/49,997
PHOTO-FINISH Oneida Air Systems
CPC-FOCUS A61B · 11 areas
INNOV-PAR 50.6/100
CLAIMS-RICH 13.9 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2025 · 6y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Oneida Air Systems, 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 Otsuka’s 50.6 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 10.5 pts (21%) Velocity 20.0 pts (40%) Breadth 11.7 pts (23%) Claim depth 8.3 pts (16%)

Qualcomm Incorporated · highest

85
Otsuka Medical Devices · this assignee

51
3D Lighting… · lowest

7

What this shows Otsuka's Innovation Score is 50.6/100 (top 13% 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 Otsuka?

Each dot is one of Otsuka’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). Otsuka’s own 13.9 claims/patent is at or below the 15.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Otsuka's grants concentrate

Otsuka Medical Devices Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 35% of grants classified under A61B (DIAGNOSIS; SURGERY; Identification). Peak complete grant year is 2024 (9 grants) versus a trough of 1 in 2020. By volume, Otsuka sits between Oneida Air Systems, Inc. and PAN Pacific Plastics MFG., Inc..

Otsuka's three-year grant acceleration

Otsuka Medical Devices Co., Ltd. shows 12 grants in 2022–2024 against only 3 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Oneida Air Systems

20
Optovate

20
Ostomycure AS

20
Otonexus Medical

20
Owl biomedical

20
Paion UK

20
Palfinger

20
PAN Pacific Plast…

20
Otsuka Medical De… ◀

20

What this shows Otsuka holds 20 patents at rank #14,835, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Otsuka

By rank, the assignees closest to #14,835 in granted patent volume.

Leaders in A61B (Diagnosis)

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

Otsuka's Innovation Score vs. every tracked assignee

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

51 Top 13% higher than 87% 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 · 2020–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2020–2019 baseline. Full figures in the table below.

View data table

Otsuka Medical Devices Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	1	5.0%
2021	2	10.0%
2023	3	15.0%
2024	9	45.0%
2025partial year	5	25.0%

Which technologies does Otsuka Medical Devices Co., Ltd. patent most?

A61B - DIAGNOSIS; SURGERY; Identification 7

A61N - ELECTROTHERAPY; MAGNETOTHERAPY; Radiation THERAPY; Ultrasound Therapy 7

A61F - Filters Implantable Into Blood VESSELS; PROSTHESES; Devices Providing Patency TO, OR Preventing Collapsing OF, Tubular Structures OF THE Body, e.g. STENTS; Orthopaedic, Nursing OR Contraceptive DEVICES; FOMENTATION; Treatment OR Protection OF Eyes OR EARS; Bandages, Dressings OR Absorbent PADS; Firs 4

G06T - Image Data Processing OR Generation, IN General 2

G16H - Healthcare Informatics, i.e. Information AND Communication Technology [ICT] Specially Adapted FOR THE Handling OR Processing OF Medical OR Healthcare Data 2

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 1

B06B - Methods OR Apparatus FOR Generating OR Transmitting Mechanical Vibrations OF Infrasonic, Sonic, OR Ultrasonic Frequency, ; e.g.; FOR Performing Mechanical Work IN General 1

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 1

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 1

A61L - Methods OR Apparatus FOR Sterilising Materials OR Objects IN GENERAL; Disinfection, Sterilisation OR Deodorisation OF AIR; Chemical Aspects OF Bandages, Dressings, Absorbent Pads OR Surgical ARTICLES; Materials FOR Bandages, Dressings, Absorbent Pads OR Surgical Articles 1

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 1

Top 11 of 11 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

Otsuka Medical Devices Co., Ltd.'s patent record in context - here's where to go next.

Otsuka Medical Devices Co., Ltd.'s lead technology class is A61B (DIAGNOSIS; SURGERY; Identification), 35% of its portfolio - see every assignee active in that class. Explore A61B
Ranked #14,838 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Otsuka Medical Devices Co., Ltd. against Oneida Air Systems, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 50.6/100 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.