Sungdoo Nahm counsels clients on trademark protection on a global scale. He is heavily involved in doing clearance and registration searches and opinions and is also responsible for coordinating international trademark prosecution and enforcement.

Sungdoo also drafts and executes IP-related agreements including licenses and assignments, and Sungdoo works with luxury and fashion brands, with pharmaceutical companies, and also with hospitality industry leaders.

He has represented various clients including Hasbro, Tim Hortons, Colgate-Palmolive Company, WIZ KHALIFA, and YEEZUS among many others.

For Hasbro, he was able to register TM “MY LITTLE PONY” over prior existing registrations, the prominent portion of which included “PONY” entirely. His dissimilarity argument in trial and appeal procedures was successful as the Korean Intellectual Property Trial and Appeal Board (IPTAB) decided to reverse the prior decision of rejection made by the Korean Intellectual Property Office (KIPO) to deny the registration for “MY LITTLE PONY”.

Sungdoo Nahm was also responsible for drafting a cease and desist letter to a local knock-off ‘Tim Mortons’ coffee in the Republic of Korea and successfully enforced against such use on the basis of Tim Hortons’ fame, reputation, and goodwill earned in the overseas.

Sungdoo has professional memberships with the INTA, ECTA, and PTMG. He is also a member of the INTA Unfair Competition Committee.

- Making and execution of global co-existence agreement between Bayer Medical Care, Inc. and local company Lutronic for trademark "SOLARIS"

- Taking representation for a number of trademark cases for Bayer companies based in Germany, Finland, and the U.S.

- Taking representation for a number of trademark cases for Japanese animation producer GHIBLI STUDIO

- Taking representation for a number of trademark cases including My Little Pony for movie producer HASBRO, INC.

- Taking representation for a number of trademark cases including HAY DAY for mobile game producer Supercell Oy from Finland

- Taking representation for a number of trademark cases including WEWORK and WEEAT for U.S. company WeWork

- Opposition against trade and service mark application filed by third party on behalf of Tim Hortons, one of the largest multinational fast food restaurant based in Canada

- Opposition against trade and service mark application filed by third party on behalf of Fairmont Hotels and Resorts

- Taking representation for WIZ KHALIFA, a U.S. rapper, songwriter and actor to register his name as trade and service marks