For more than 15 years, Byunguk CHOI has practiced patent law across electronics
and mechanical technology — electric circuits, medical devices, medical software,
smart farm, semiconductors, blockchain, and AI — along with trademark practice
for beauty and F&B brands.
As Managing Partner at Hangang IP Law Firm,
he protects our clients' technical assets without compromise.
Drawing on broad practical experience across patent and trademark matters.
Education
Gimpo Haseong High School
B.S. in Electronic & Radio Engineering, Kyung Hee University
Credentials
Passed the 47th Korean Patent Bar Exam (2011)
Member, Korean Patent Attorneys Association
Experience
Current: Managing Partner, Hangang IP Law Firm
Former: KCL Law Firm
Former: Jisim Patent & Law Office
Former: In-house Patent Attorney, LINE Plus Corporation
Practice Areas
Practice Areas & Representative Matters
From asset design to dispute response, covering the full IP service lifecycle for technology companies.
Patent Landscaping & Consulting
Quantum computing technology survey and portfolio-building support
Blockchain-based rights certification and tracing systems
Rights-protection strategy for digital therapeutics
In-vehicle HMI and OTA updates
Patent landscape for marine data integration platforms
IP-R&D
IP Narae program : visual ARS for smartphones, freight brokerage platforms, and more
IP-R&D strategy : ophthalmic therapy devices, blood glucose management, gait-assist wearable robots, and more
Patent Litigation & Trials
Patent infringement suits for smartphone magnetic shielding and communication components
Multiple trademark cancellation suits against major telecom and cosmetics companies
Trademark scope-of-rights trials and subsequent appeals in the F&B and cosmetics sectors
Insights
Articles & Interviews
Selected contributions and interviews featured in major Korean media.
Dhilbo DailyColumn · 2026
Did Starbucks Open an Unattended Capsule Café Next Door?
A column on how unattended cafés, select shops, and other multi-brand retailers can safely display third-party logos at their storefronts, keeping the operator's own name primary and avoiding the consumer confusion that invites trademark risk.
K-Defense Exports to Poland: Are the Patents Keeping Pace?
With 46% of Korea's defense exports now flowing to Poland, this contributed piece audits the live patent holdings of the four major Korean defense groups — Hanwha, Hyundai, LIG Nex1, and KAI — on Polish soil, and reframes patent portfolios as peacetime instruments for licensing leverage and competitive defense.
A broadcast interview addressing trademark squatters in China who pre-file K-brand marks for improper gain, and the practical response strategies available to Korean companies.
XITY Smart City Magazine — Expert interview series
Part of XITY Magazine's expert interview series on the impact of generative AI across professional domains, this installment examines how AI is reshaping patent practice and where the opportunities lie.
Generative AI
Patent practice automation
Specification drafting
Legal tech
DesignMapArticles · 2013 – 2014
3D Printing and Designers' Rights · Global 3D-Printer Patent Infringement Litigation
Two contributed articles on the redefinition of design rights triggered by the spread of 3D printing, and an analysis of patent disputes between global companies over 3D-printing technology.