USPTO 2015–2025 USPTO PatentsView Foreign Corporation

SK Innovation Co., Ltd.

USPTO PatentsView assignee record - 610 granted patents across 133 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: Y02E (REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION).

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

Explore the portfolio See the ranking

610

Total patents granted

133

CPC technology areas

11.3

Avg claims per patent

+21%

5-year filing velocity

The verdict

SK holds 610 US patents across 133 technology areas, rank #751 of 50,000 tracked assignees.

#751
of 50,000 US assignees by volume: Top 3%
by Innovation Score (61.8/100): 11.3
avg claims per patent: +21%
filing velocity, last 5 yrs

Portfolio overview

SK Innovation Co., Ltd. has been granted 610 US utility patents between 2015 and 2025, placing SK Innovation Co., Ltd. at rank #751 across all assignees tracked by PlainPatent. This portfolio spans 133 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.3 claims per patent with primary concentration in Y02E (REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION). As a Foreign Corporation, SK Innovation Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, SK sits between Spectrum Brands, Inc. (612 patents, rank #747) and Essilor International (606 patents, rank #755) - the closest US assignees by grant volume. The composite Innovation Score of 61.8/100 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 334 grants, compared with 276 in the 2015–2019 window, a +21% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. 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. SK Innovation Co., Ltd.'s 11.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark SK Innovation Co., Ltd. against peers pursuing similar technology classes.

Spectrum Brands

612
Yahoo Holdings

611
Renault S

610
Roche Diabetes Ca…

610
SK Innovation ◀

610
Oki Data

609
University of Uta…

608
GE Aviation Syste…

607
Essilor Internati…

606

What this shows SK holds 610 patents at rank #751, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near SK

By rank, the assignees closest to #751 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

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

SK's Innovation Score vs. every tracked assignee

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

62 Top 3% higher than 97% 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

SK Innovation Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	43	7.0%
2016	45	7.4%
2017	77	12.6%
2018	57	9.3%
2019	54	8.9%
2020	46	7.5%
2021	58	9.5%
2022	77	12.6%
2023	45	7.4%
2024	64	10.5%
2025	44	7.2%

Which technologies does SK Innovation Co., Ltd. patent most?

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 256

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 254

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 101

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 76

C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS 74

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 70

C10G - CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION ; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES 66

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 59

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 45

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 35

C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 35

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 29

C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM 27

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 26

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 24

Top 15 of 133 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#751

Across all tracked assignees

Innovation Score

61.8 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 SK Innovation Co., Ltd. hold?

SK Innovation Co., Ltd. holds 610 US granted patents filed between 2015 and 2025, spanning 133 technology areas.

What is SK Innovation Co., Ltd.'s Innovation Score?

SK Innovation Co., Ltd. has an Innovation Score of 61.8 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does SK Innovation Co., Ltd. focus on?

SK Innovation Co., Ltd.'s top technology area is Y02E (REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION) with 256 patents. The company has filed patents in 133 CPC subclasses total.

Is SK Innovation Co., Ltd.'s patent filing rate increasing or decreasing?

SK Innovation Co., Ltd.'s recent filing velocity is +21% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for SK Innovation Co., Ltd.'s patents?

SK Innovation Co., Ltd.'s patents average 11.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the SK Innovation 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

SK's 610 grants land it in the top 3% 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 - SK ranks #751 of 50,000. Top 50 holders
Most of this portfolio concentrates in Y02E - see who else leads that technology area. Y02E 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.