Lee International IP & Law Group

Lee International IP & Law Group was founded in 1961, making it one of the oldest law firms in Korea. Since its establishment, Lee International has provided its clients with expert legal services covering every facet of IP law and beyond, and has been recognised by clients as one of the premier law firms in Korea. Lee International remains a leader in Korean IP law practice with one of the largest and most active practices for patents, utility models, designs, trademarks, domain names, copyright and trade secrets. Lee International has also been actively involved in licensing, IP portfolio development and management and a wide range of other IP-related matters. Lee International is renowned for its exceptional service and cost-efficient handling and resolution of IP disputes.


Lee International works hand in hand with clients to achieve their desired goals. The clients are kept fully informed and play an integral role in all aspects of the decision-making process. Lee International understands that its clients’ success equates to its own success, and has continued to strive to build a strong partnership with its clients in achieving their business success in Korea.


The staff of Lee International includes qualified lawyers, patent attorneys and a wide range of advisers and experts with many years of experience and expertise working with clients to devise creative solutions to complex legal issues. Lee International’s patent practice consists of 60 patent attorneys supported by 150 technical engineers and administrative staff members.

Patent practice

Lee International’s patent practice is divided into three main groups:

  • Electronics and information technology – handling patents and utility models in the technical fields of electronics and information technology. Its expertise includes semiconductor devices, semiconductor manufacturing devices and processes, optics, electronic devices, wireless communications, communication standards, network systems, communication security, cloud computing, the Internet of Things, Big Data, computer-related inventions including business methods, audio and video codec, signal processing, display and multimedia. Members are continuously updating their knowledge base in emerging new technologies. It represents global companies in all aspects of intellectual property, in jurisdictions including the United States, Japan, Europe, China and Taiwan.
  • Mechanical engineering – comprising the best and brightest patent attorneys with strong technical and scientific backgrounds and various work experience in the relevant fields and provides the highest-quality legal services to protect clients’ rights. It covers automobile parts, semiconductor manufacturing devices, air conditioning and refrigerating equipment, medical appliances, display devices, optical techniques, steel, nonferrous metals, alloys, preparation processes and facilities of materials, light-emitting diode (LED) packages, organic LED packages and sports equipment. The patent attorneys in the mechanical engineering practice group do their utmost to fulfil clients’ needs in various IP-related areas.
  • Chemical – boasting a formidable roster of attorneys with extensive legal experience and technical expertise across a wide spectrum of technologies encompassing organic chemistry, inorganic chemistry, polymers, chemical processes, semiconductor or display material science, biochemistry, pharmaceuticals, biotechnology, agrochemicals and food. The chemical practice group provides customised patent strategies for its clients’ patent prosecution as well as effective enforcement of patent rights. It has assisted various clients in pharmaceutical regulatory matters including the Patent and Marketing Approval Linkage System before the Ministry of Food and Drug Safety. It is highly recognised by clients for its comprehensive legal services and responsiveness. The attorneys in the chemical practice group excel in communicating and maintaining close working relationships with US, European and Japanese clients. Its attorneys have endeavoured to improve patent practice in Korea in order to more effectively protect clients’ IP rights by actively communicating with the Korean Intellectual Property Office and Korean courts to effect change and offering opinions on the revisions of laws and regulations.

Contact details

Lee International IP & Law Group
Poongsan Building 23 Chungjeong-ro
Seoul 03737
South Korea

Professional contacts

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