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Mu Song Seo

Lee & KoHanjin Building63 Namdaemun-ro, Jung-guSeoulKorea04532

Global Leader

WWL Ranking: Recommended

National Leader

Korea - Intellectual Property

Professional Biography

WWL Ranking: Recommended

WWL says

Mu Song Seo stands out in the IP market thanks to his first-class work advising and representing clients in relation to sophisticated trademark infringement and prosecution proceedings.


Mu Song Seo is a partner in the intellectual property practice group. Prior to joining the firm in 1998, he began his legal career as a counsel and trial lawyer in various civil and criminal trials. His current practice is focused primarily in IP litigation and counseling.

Mr Seo has successfully represented a number of global enterprises and conglomerates, including sports equipment companies, banks and internet shopping centre operators, in a number of trademark infringement and invalidation cases. In particular, he represented a famous outdoor brand owner in various litigations against trademark squatters who attempted to free-ride on the reputation of the brand. This matter led to hundreds of litigations, including infringement, invalidation and cancellation trials, and prosecution proceedings, and ultimately led the brand to victory in what is now the largest trademark war on record.

He also represented a vast number of global chemical and electronics corporations in trade secret misappropriation, non-compete, patent infringement and copyright infringement cases, including a large hospital operated by one of the largest corporate groups in a copyright and licensing dispute over software. Mr Seo is admitted to the Korean Bar and the Korean Patent Bar.

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