Byungil Lee

Byungil Lee






Practice Area

  • Criminal and civil litigation, management/shareholder disputes, employment & labor, IP disputes, tax and administrative proceedings


  • 2006 Korea


  • 2006 Judicial Research and Training Institute, The Supreme Court of Korea
  • 2004 Seoul National University

Byungil is a co-founder of SEUM and partner in the firm’s litigation group. He handles a broad range of civil and criminal litigation matters, as well as management and shareholder disputes, IP disputes, employment and labor consulting matters, and tax administrative proceedings. Byungil represents both Korean and international clients in a diverse range of industries such as manufacturing, technology, advertising, logistics, and startups.

Before founding SEUM, Byungil was an attorney in the labor & employment group of one of Korea’s leading traditional law firms, where he represented large corporations in a number of landmark employment cases.

  • 2012-Present
  • 2009-12
    Bae Kim & Lee
  • 2006-09
    Republic of Korea Navy, Judge Advocate General Corps.
Representative Matters

IP/Trade Secret Disputes

  • Represented a major mobile advertising company on an injunction proceeding and litigation in relation to a former employee’s violation of non-compete
  • Represented a major pest control service provider in a non-compete lawsuit against former employee
  • Represented a major electronics device manufacturer in a lawsuit against former employee for disclosure of trade secrets
  • Represented major apparel manufacturer in an injunction proceeding against its competitor for violation of trademark
  • Represented a security product manufacturer in an injunction proceeding against its competitor for a design infringement
  • Represented a major design company in an injunction proceeding against its competitor for violation of copyright 
  • Advised a cosmetics manufacturer with respect to a design infringement dispute

Shareholder / Management Disputes

  • Represented chemical device manufacturer regarding an ownership dispute between existing and former management
  • Advised software developer on hostile exercise of shareholders rights
  • Advised online contents provider regarding the hiring and termination of CEO
  • Advised real estate developer in management dispute between existing owners and new owners in connection with a corporate acquisition

Employment / Labor

  • Represented a logistics company in a lawsuit against its employee regarding dispute over overseas assignment
  • Represented telecommunications corporation in a lawsuit brought by employees alleging unlawful employment termination
  • Represented ceramics manufacturer in a lawsuit brought by employees challenging calculation of ordinary wages
  • Represented government-owned company in a labor dispute proceeding and lawsuit for wrongful termination
  • ICLG Guide to: Employment & Labour Law 2018, Korea Chapter (8th Edition, Global Legal Group)
  • Korean, English