Where does Santen Pharmaceutical Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Santen Pharmaceutical Co., Ltd. ranks #4,022 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 Santen Pharmaceutical Co., Ltd. hold?

Santen Pharmaceutical Co., Ltd. holds 90 US utility patents granted between 2015 and 2025, spanning 27 technology areas.

What is Santen Pharmaceutical Co., Ltd.'s Innovation Score?

Santen Pharmaceutical Co., Ltd. has an Innovation Score of 44.5 out of 100 (top 25% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Santen Pharmaceutical Co., Ltd.'s patent grant rate increasing or decreasing?

Santen Pharmaceutical Co., Ltd.'s recent grant velocity is -31% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Santen Pharmaceutical Co., Ltd.'s patents?

Santen Pharmaceutical Co., Ltd.'s patents average 10.0 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 Santen Pharmaceutical 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

Santen Pharmaceutical Co., Ltd.

Q: What technology areas does Santen Pharmaceutical Co., Ltd. focus on?

Santen Pharmaceutical Co., Ltd.'s top technology area is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes) with 68 patents. Grants appear in 27 CPC subclasses total.

USPTO PatentsView assignee record - 90 granted patents across 27 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Santen ranks #4,022 of 49,997 tracked US assignees by granted-patent volume, with 90 patents across 27 technology areas.

#4,022
of 49,997 US assignees by volume: Top 25%
by Innovation Score (44.5/100): 10.0
avg claims per patent: -31%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4022 · Foreign Corporation #4,022 · 90 grants

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

GRANTS-SMALL 90 grants
TOP-DECILE #4,022/49,997
PHOTO-FINISH NKT Photonics A/S
CPC-FOCUS A61K · 27 areas
INNOV-PAR 44.5/100
CLAIMS-PAR 10.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -31% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: NKT Photonics A/S (±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.

Qualcomm Incorporated · highest

85
Diveplane · near

44
Doskocil Manufacturing · near

44
Santa Clara University · near

44
Santen Pharmaceutical · this assignee

44
Teva Pharmaceutical… · near

44
3D Lighting… · lowest

7

What this shows Santen's Innovation Score is 44.5/100 (top 25% 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.

Where Santen's grants concentrate

Santen Pharmaceutical Co., Ltd. is a focused PatentsView assignee: 27 CPC subclasses with 75.6% of grants classified under A61K (Preparations FOR Medical, Dental OR Toiletry Purposes). Peak complete grant year is 2015 (17 grants) versus a trough of 4 in 2024. By volume, Santen sits between NKT Photonics A/S and Tristar Products, Inc..

Santen's three-year grant acceleration

From 2019–2021 to 2022–2024, Santen Pharmaceutical Co., Ltd. moved from 25 to 17 grants (0.68x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

NKT Photonics A/S

90
Nuro

90
Pierburg Pump Tec…

90
Quanta Associates

90
Soletanche Freyss…

90
Surefire

90
Toyota Motor Euro…

90
Tristar Products

90
Santen Pharmaceut… ◀

90

What this shows Santen holds 90 patents at rank #4,022, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Santen

By rank, the assignees closest to #4,022 in granted patent volume.

Leaders in A61K (Preparations FOR Medical)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Santen, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (44 here).

Teva Pharmaceutical Industries, Ltd. 44 Doskocil Manufacturing Company, Inc. 44 Diveplane Corporation 44 Santa Clara University 44

Similar claim depth

Nearest assignees by average claims per patent (10.0 here).

Knoll, Inc. 10.0 avg Toagosei Co., Ltd. 10.0 avg Fast IP, LLC 10.0 avg Jenoptik Optical Systems GmbH 10.0 avg

Santen's Innovation Score vs. every tracked assignee

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

44 Top 25% higher than 75% 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

Santen Pharmaceutical Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	17	18.9%
2016	10	11.1%
2017	8	8.9%
2018	9	10.0%
2019	7	7.8%
2020	10	11.1%
2021	8	8.9%
2022	8	8.9%
2023	5	5.6%
2024	4	4.4%
2025partial year	4	4.4%

Which technologies does Santen Pharmaceutical Co., Ltd. patent most?

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 68

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 65

C07D - Heterocyclic Compounds 12

C07C - Acyclic OR Carbocyclic Compounds 10

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 6

Y02A - Technologies FOR Adaptation TO Climate Change 6

C07B - General Methods OF Organic CHEMISTRY; Apparatus Therefor 4

C07K - Peptides 4

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 3

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 2

C07J - Steroids 2

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 2

A61M - Devices FOR Introducing Media Into, OR Onto, THE Body ; Devices FOR Transducing Body Media OR FOR Taking Media From THE Body ; Devices FOR Producing OR Ending Sleep OR Stupor 2

G02C - SPECTACLES; Sunglasses OR Goggles Insofar AS They Have THE Same Features AS SPECTACLES; Contact Lenses 2

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 1

Top 15 of 27 technology areas

Where it ranks

Overall rank by patents

#4,022

of 49,997 tracked assignees

Innovation Score

44.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Santen Pharmaceutical Co., Ltd.'s patent record in context - here's where to go next.

Santen Pharmaceutical Co., Ltd.'s lead technology class is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes), 75.6% of its portfolio - see every assignee active in that class. Explore A61K
Ranked #4,022 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Santen Pharmaceutical Co., Ltd. against NKT Photonics A/S, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.5/100 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.