Follow Lumenci:
Disclaimer: This report has been updated through 21 July 2026. The information is provided for reference only and does not represent any opinion, recommendation, or endorsement.
Contemporary Amperex Technology Co., Limited (CATL) is a China-based new energy and battery technology company with a patent portfolio spanning lithium-ion batteries, power (EV) batteries, energy storage systems, battery cells and packs, battery management systems, cathode and anode materials, electrolytes and separators, battery recycling, fast charging, sodium-ion and solid-state battery technologies, and battery-swapping systems. Its filings cover cell chemistry and architecture, module and pack design, thermal management and safety, manufacturing processes, materials and recycling, and energy-storage and management technologies. The portfolio includes patents filed across multiple decade
CATL’s patent portfolio comprises 55,592 patents distributed across 28,397 simple families and 28,781 extended families. The portfolio spans 28 jurisdictions and includes patents associated with lithium-ion batteries, energy storage, battery materials, battery management, recycling, and related new energy technologies.
CATL’s portfolio consists of 48,379 active assets and 7,184 inactive assets. Active holdings include 25,807 granted patents and 22,572 patent applications. Inactive assets comprise expired patents, patents expired due to term or maintenance fee non-payment, withdrawn applications, abandoned applications, and inactive applications.
New Analysis Monthly Alerts. No Spam!
CATL’s patents span 28 jurisdictions, with China accounting for the largest share of filings and grants.
Total Patents: 55,592
The portfolio includes patent assets across Asia, Europe, and North America, with the largest concentration located in China. Additional holdings are distributed through the World Intellectual Property Organization and across major jurisdictions including the United States, the European Patent Office, South Korea, Japan, and Hungary.
CATL’s patent portfolio is concentrated in energy technologies, reflecting its focus on lithium-ion power and energy-storage batteries, battery materials, and battery management, followed by semiconductor-related and industrial & retail applications.
The citation data includes references involving major battery, automotive, and electronics companies. The largest citation volumes are associated with CATL, Panasonic, Toyota, Samsung SDI, TDK, BYD, LG Chem, Hunan Brunp, and GS Yuasa.
CATL’s litigation dataset is concentrated in China, comprising 78 Chinese Patent Reexamination Board proceedings and 12 related parties. The dataset records no active or inactive cases, appeals, patents in litigation, petitions, or reexaminations in the other tracked categories.
CATL’s patent portfolio consists of 55,039 originally assigned patents and 553 acquired patents. Acquired patents originate from operating companies, non-practicing entities (NPEs), universities, and other sources.
2021 / 2022 – Millennial Lithium Corp (~C$377 million / ~US$302 million)
CATL acquired 100% of Canadian lithium developer Millennial Lithium Corp in an all-cash deal valued at approximately C$376.8 million (around US$302 million), announced in September 2021 at C$3.85 per share and completed in early 2022. The acquisition secured Millennial’s lithium projects in Argentina and formed part of CATL’s strategy to lock in upstream lithium supply.
2020 / 2021 – Strategic upstream resource stakes
Alongside the Millennial acquisition, CATL built a portfolio of minority stakes across the battery raw-material supply chain, including an approximately 8% stake in Argentina-focused Neo Lithium Corp, holdings in Australia’s Pilbara Minerals and Greenland-focused North American Nickel, and a 24% interest (via an affiliate) in the AVZ Minerals Manono lithium project in the Democratic Republic of the Congo.
Contemporary Amperex Technology Co., Limited (CATL) is the world’s largest manufacturer of electric-vehicle and energy-storage batteries. It is dual-listed on the Shenzhen Stock Exchange (300750, since June 2018) and the Hong Kong Stock Exchange (3750, since May 2025). In April 2026 it raised approximately US$5 billion through a Hong Kong H-share placement.
Leadership (Current)
Contemporary Amperex Technology Co., Limited
Ningde, Fujian Province
China
CATL’s global headquarters are located in Ningde, Fujian Province, China.
CATL’s patent portfolio includes 55,592 patents across 28 jurisdictions. The portfolio contains patent assets in lithium-ion batteries, power and energy-storage batteries, battery cells and packs, battery management systems, cathode and anode materials, electrolytes and separators, battery recycling, and related new energy technologies.
The portfolio includes 28,397 simple families, 28,781 extended families, 14 litigated patents, and 5 challenged patents.
CATL’s patent portfolio contains 55,592 patents across 28 jurisdictions. The portfolio includes 28,397 simple families and 28,781 extended families.
Energy technologies – lithium-ion power and energy-storage batteries, battery materials, and battery management – represent CATL’s largest focus, followed by semiconductor-related and industrial & retail applications.
CATL’s portfolio includes 48,379 active patent assets, consisting of 25,807 active grants and 22,572 active applications.
China contains the largest number of CATL patent assets, followed by World Intellectual Property Organization filings, the United States, the European Patent Office, South Korea, and Japan.
CATL’s litigation dataset records 78 Chinese PRB proceedings and 12 related parties; the key metrics list 14 litigated patents and 5 challenged patents.
The portfolio contains 55,039 originally assigned patents and 553 acquired patents.
The citation data includes significant references involving Panasonic, Toyota, Samsung SDI, TDK, BYD, LG Chem, Hunan Brunp, and GS Yuasa.
CATL acquired Canadian lithium developer Millennial Lithium Corp (2021/2022) and holds strategic upstream stakes in Neo Lithium, Pilbara Minerals, North American Nickel, and the AVZ Minerals Manono lithium project.
Reach out and we’ll get you what you need.
By using this website, you agree to our use of cookies. We use cookies to provide you with a great experience and to help our website run effectively.
Close
