Santen Pharmaceutical Co., Ltd.
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).
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.
How Santen’s 44.5 Innovation Score adds up
The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.
Innovation-score neighbourhood around Santen
Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.
- Qualcomm Incorporated · highest
Qualcomm Incorporated · highest
85 score
- Diveplane · near
Diveplane · near
44 score
- Doskocil Manufacturing · near
Doskocil Manufacturing · near
44 score
- Santa Clara University · near
Santa Clara University · near
44 score
- Santen Pharmaceutical · this assignee
Santen Pharmaceutical · this assignee
44 score
- Teva Pharmaceutical… · near
Teva Pharmaceutical… · near
44 score
- 3D Lighting… · lowest 7
3D Lighting… · lowest
7 score
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.
Does more volume mean deeper claims for Santen?
Each dot is one of Santen’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). Santen’s own 10.0 claims/patent is at or below the 14.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.
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.
Who files at Santen's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- NKT Photonics A/S
NKT Photonics A/S
90 patents
- Nuro
Nuro, Inc.
90 patents
- Pierburg Pump Tec…
Pierburg Pump Technology GMBH
90 patents
- Quanta Associates
Quanta Associates, L.P.
90 patents
- Soletanche Freyss…
Soletanche Freyssinet
90 patents
- Surefire
SureFire, LLC
90 patents
- Toyota Motor Euro…
Toyota Motor Europe
90 patents
- Tristar Products
Tristar Products, Inc.
90 patents
- Santen Pharmaceut… ◀
Santen Pharmaceutical Co., Ltd.
90 patents
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.
- NKT Photonics A/S #4,018 · 90 patents
- Nuro, Inc. #4,019 · 90 patents
- Pierburg Pump Technology GMBH #4,020 · 90 patents
- Quanta Associates, L.P. #4,021 · 90 patents
- Soletanche Freyssinet #4,023 · 90 patents
- SureFire, LLC #4,024 · 90 patents
- Toyota Motor Europe #4,025 · 90 patents
- Tristar Products, Inc. #4,026 · 90 patents
Leaders in A61K (Preparations FOR Medical)
Other assignees with the most granted patents in Santen's primary technology class.
- The Regents of the University of California 1,779 in class
- L'Oreal 1,250 in class
- Novartis AG 988 in class
- The Procter & Gamble Company 985 in class
- The Board of Regents of the University of Texas System 950 in class
- The United States of America, as represented by the Secretary, Department of Health and Human Services 813 in class
- The Trustees of the University of Pennsylvania 768 in class
- Merck Sharp & Dohme LLC 760 in class
Assignees with similar portfolio profiles
Two PlainPatent-derived peer sets for Santen, neither rank-band nor same-CPC leaders (those blocks stay above). In A61K (Preparations FOR Medical), Santen ranks #293 of 7,163 assignees by patent count in that subclass.
Similar innovation score
Nearest assignees by Innovation Score (44 here).
Similar claim depth
Nearest assignees by average claims per patent (10.0 here).
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
Grants by year
Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.
View data table
| 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?
Top 15 of 27 technology areas
Data Source
USPTO PatentsView, US granted patents 2015–2025
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.
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.