USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Seoul Semiconductor Co., Ltd.

USPTO PatentsView assignee record - 410 granted patents across 58 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H10H (INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS).

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

Explore the portfolio See the ranking

410

Total patents granted

CPC technology areas

16.6

Avg claims per patent

-14%

5-year filing velocity

The verdict

Seoul holds 410 US patents across 58 technology areas, rank #1,054 of 50,000 tracked assignees.

#1,054
of 50,000 US assignees by volume: Top 2%
by Innovation Score (63.5/100): 16.6
avg claims per patent: -14%
filing velocity, last 5 yrs

Portfolio overview

Seoul Semiconductor Co., Ltd. has been granted 410 US utility patents between 2015 and 2025, placing Seoul Semiconductor Co., Ltd. at rank #1,054 across all assignees tracked by PlainPatent. This portfolio spans 58 distinct Cooperative Patent Classification (CPC) subclasses, averaging 16.6 claims per patent with primary concentration in H10H (INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS). As a Foreign Corporation, Seoul Semiconductor Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Seoul sits between Japan Tobacco Inc. (412 patents, rank #1,050) and Brainlab Ag (407 patents, rank #1,058) - the closest US assignees by grant volume. The composite Innovation Score of 63.5/100 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 189 grants, compared with 221 in the 2015–2019 window, a -14% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Seoul Semiconductor Co., Ltd.'s 16.6 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 58 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Seoul Semiconductor Co., Ltd. against peers pursuing similar technology classes.

Japan Tobacco

412
A9 com

411
Asahi Glass

411
Gigaphoton

411
The Broad Institu…

410
Seoul Semiconduct… ◀

410
ASSA Abloy AB

408
Fluke

408
Brainlab

407

What this shows Seoul holds 410 patents at rank #1,054, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Seoul

By rank, the assignees closest to #1,054 in granted patent volume.

Leaders in H10H (Inorganic Light-emitting Semiconductor Devices Having Pot…)

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

Seoul's Innovation Score vs. every tracked assignee

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

63 Top 2% higher than 98% 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

Seoul Semiconductor Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	41	10.0%
2016	48	11.7%
2017	56	13.7%
2018	43	10.5%
2019	33	8.0%
2020	28	6.8%
2021	27	6.6%
2022	29	7.1%
2023	39	9.5%
2024	34	8.3%
2025	32	7.8%

Which technologies does Seoul Semiconductor Co., Ltd. patent most?

H10H - INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS 273

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 256

H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL 83

F21Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED 80

F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 67

Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS 56

G02F - OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 54

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 53

F21K - NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR 51

H10D - INORGANIC ELECTRIC SEMICONDUCTOR DEVICES 42

F21S - NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS 30

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 25

F21W - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS 22

G09G - ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 18

C30B - SINGLE-CRYSTAL GROWTH ; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL ; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE ; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WI 16

Top 15 of 58 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Declining

Where it ranks

Overall rank by patents

#1,054

Across all tracked assignees

Innovation Score

63.5 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 Seoul Semiconductor Co., Ltd. hold?

Seoul Semiconductor Co., Ltd. holds 410 US granted patents filed between 2015 and 2025, spanning 58 technology areas.

What is Seoul Semiconductor Co., Ltd.'s Innovation Score?

Seoul Semiconductor Co., Ltd. has an Innovation Score of 63.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Seoul Semiconductor Co., Ltd. focus on?

Seoul Semiconductor Co., Ltd.'s top technology area is H10H (INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS) with 273 patents. The company has filed patents in 58 CPC subclasses total.

Is Seoul Semiconductor Co., Ltd.'s patent filing rate increasing or decreasing?

Seoul Semiconductor Co., Ltd.'s recent filing velocity is -14% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Seoul Semiconductor Co., Ltd.'s patents?

Seoul Semiconductor Co., Ltd.'s patents average 16.6 claims each. This falls within the standard range, providing solid legal coverage.

How is the Seoul Semiconductor 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.

How to use this portfolio

Seoul's 410 grants land it in the top 2% 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 - Seoul ranks #1,054 of 50,000. Top 50 holders
Most of this portfolio concentrates in H10H - see who else leads that technology area. H10H 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.