Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Cookies Settings

Key contacts
President: C. Leon Kim
Quick facts
Number of Partners

17

Number of Practitioners

57

Languages

Korean, English, Japanese, Chinese, French and German

Key practice areas
Intellectual property
Trade mark
Patent
Firm overview

First-tier IP Firm in Korea

FirstLaw P.C. is a law firm engaged primarily in the practice of IP law.  FirstLaw P.C. was founded in 1988, and since then has rapidly grown to become one of the leading IP law firms in Korea.  Throughout the span of three decades since its founding, the Firm has consistently enjoyed the reputation for its quality services as a top-tier IP firm in Korea.

FirstLaw’s practice encompasses all aspects of intellectual property, including patents, utility models, trademarks, designs, domain names, trade secrets, licensing, intellectual property portfolio development and management, and other related areas.

 

Talented and Dedicated Professionals

FirstLaw’s patent attorneys hold advanced degrees in various technical and scientific disciplines, such as computer science, electrical engineering, mechanical engineering, biotechnology and chemistry.  By combining the depth of education and experience with up-to-date knowledge of jurisprudence, rules and procedures of various jurisdictions gained through the Firm’s long-term overseas education programs, FirstLaw’s attorneys provide clients with the most efficient IP prosecution services.

 

IP Protection Activities

In addition to IP prosecution activities, the Firm specializes in protecting the valuable IP rights of its clients.  FirstLaw’s attorneys formulate comprehensive enforcement programs, which seek to prevent infringement in the marketplace, as well as successfully prosecute and defend infringement actions when they arise.  They also develop domestic and global litigation strategies and coordinate multi-jurisdictional litigation in cooperation with outstanding lawyers in other countries with whom they have established cooperative relationships for many years. 

FirstLaw P.C. has also been actively involved in various IP-related transactions such as mergers, acquisitions, joint ventures, cooperative research and development agreements, consulting and employment agreements, non-disclosure agreements and licenses.

 

Chemical/Pharmaceutical/Biotechnology Practice Group

Among the three (3) patent groups, the chemical/pharmaceutical/biotechnology practice group provides outstanding legal services by virtue of its members’ accumulated technical knowledge, information pooling and extensive practice experience in patent filing, prosecution, trial, litigation, licensing, and counseling in extensive chemistry-related areas encompassing organic chemistry, inorganic chemistry, chemical engineering, pharmaceuticals, biotechnology, textile, agrochemical, food engineering, new materials, and semiconductor manufacturing processes and materials.

 

Electronics/IT Practice Group

The electronics/IT practice group concentrates on protecting the cutting-edge technologies of clients based on its diverse experience and in-depth knowledge.  Group members possess expertise and a broad range of experience in the fields of semiconductor devices, display systems, wired/wireless communications, computer hardware and software, electronic control systems, electronic components, nanotechnology, and online businesses, among others.

 

Mechanical Practice Group

The mechanical practice group meets the needs of clients in a wide variety of technology areas including general mechanics, automotive and aeronautical instruments, mechatronics, control devices, measurement instruments, medical equipment, and nuclear power generators, to name a few.

 

Trademark/Design Group

In the trademark/design group, attorneys assist clients in the strategic selection, application, registration, management and enforcement of trademark, design and domain name rights in a cost-effective manner.  They also help clients prevent third-party misappropriation of trademarks and names by opposing registration and seeking cancellations of existing registrations at the Korean Intellectual Property Office and before various national and regional patent and trademark offices under the Madrid Protocol.

 

Litigation Group

Lastly, the litigation group is proud to provide each client with customized, high-quality, and efficient legal services in a cost effective manner.  FirstLaw’s trial lawyers are armed with deep understanding of technology in various fields, in addition to legal experience and expertise.  The litigation group has been engaged in a number of major patent infringement actions and has been highly successful thanks to its dedicated and close working relationship with the clients. 

 

Last updated 28th August 2019

Practice Areas & Sector Specialisations

Main area of practice: Patent prosecution, Counseling and legal opinion, Technology transfer,  Advocating and enforcement activities, Safeguarding of trade secrets, Trademarks and domain names, and Copyright

Address:
60 Mabang-ro, Seocho-gu,
Seoul
06775
Tel:+82-2-589-0010 Fax:+82-2-589-0002 Email:Contact Us Web Address:http://www.firstlaw.co.kr
2026 Edition
Patent disputes
Tier 3
8 firms ranked
View full list

Tier 1

Bae Kim & Lee
13 practice areas
View full profile
Kim & Chang
11 practice areas
View full profile
Lee & Ko
14 practice areas
View full profile

Tier 2

Shin & Kim
13 practice areas
View profile
Yoon & Yang
12 practice areas
View profile
Yulchon
14 practice areas
View full profile

Tier 3

FirstLaw PC
3 practice areas
View full profile
Lee International
6 practice areas
View full profile
Patent prosecution
Tier 1
15 firms ranked
View full list

Tier 1

FirstLaw PC
3 practice areas
View full profile
Kim & Chang
11 practice areas
View full profile
YP Lee Mock & Partners
4 practice areas
View full profile

Tier 2

Lee International
6 practice areas
View full profile
NAM IP Group
3 practice areas
View full profile

Tier 3

Bae Kim & Lee
13 practice areas
View full profile
Koreana Patent Firm
6 practice areas
View profile
Lee & Ko
14 practice areas
View full profile
Muhann Patent & Law Firm
4 practice areas
View full profile
You Me Patent & Law Firm
6 practice areas
View profile

Other Notable Firms

HANOL ClassHankyul IP & Law
3 practice areas
View full profile
PI IP LAW (Lee Park & Associates)
5 practice areas
View full profile
SungAm Suh International Patent & Law Firm
4 practice areas
View full profile
YNP IP
7 practice areas
View profile
Yoon & Lee International Patent & Law Firm
5 practice areas
View profile
Trade mark prosecution
Tier 2
15 firms ranked
View full list

Tier 1

Kim & Chang
11 practice areas
View full profile

Tier 2

Bae Kim & Lee
13 practice areas
View full profile
FirstLaw PC
3 practice areas
View full profile
Lee & Ko
14 practice areas
View full profile
Muhann Patent & Law Firm
4 practice areas
View full profile
SungAm Suh International Patent & Law Firm
4 practice areas
View full profile
YP Lee Mock & Partners
4 practice areas
View full profile

Tier 3

Cho & Partners
7 practice areas
View full profile
Lee International
6 practice areas
View full profile
NAM IP Group
3 practice areas
View full profile
Yoon & Yang
12 practice areas
View profile
You Me Patent & Law Firm
6 practice areas
View profile

Other Notable Firms

E M Hwang & Partners
5 practice areas
View full profile
PI IP LAW (Lee Park & Associates)
5 practice areas
View full profile
Yoon & Lee International Patent & Law Firm
5 practice areas
View profile
Overview

FirstLaw PC is one of the leading law firms in South Korea. It receives recognition from the market for its comprehensive IP services. The team has a strong capacity to handle a wide variety of IP matters, such as patent prosecution and litigation. It is organized into a chemical practice group, an electronics and IT practice group, and a mechanical practice group to meet the needs of its clients. It also supports clients with trade mark services such as applications, oppositions, and dispute resolution.

Notable patent practitioners: Changse Leon Kim, Young Sun Jung
Notable soft IP practitioner: Jeong Won Lee

Testimonials

2026

"High quality of prosecution services"

"The team at FirstLaw is highly skilled with excellent responsiveness."

"Incredibly responsive and knowledgeable about latest case law"

"Excellent prosecution counsel able to navigate very complex matters (technically and legally)"

"The most responsive firm that we have in this jurisdiction. Also very helpful to have Ryan located in the US to help coordinate the work"

Ryan Kim

"Great management of our relationship and excellent communication"

Jeong Won Lee

"Jeong Won manages the trademark prosecution practice at FirstLaw in a very effective and skilled manner.  She maintains excellent client relationships and takes the time to get to know the client."

 

2025

"Efficient, effective, and understanding."

"I have worked with FirstLaw for over 25 years and are very familiar and comfortable with their personnel and services."

"Impressed by their quick understanding of the technologies and skilful representation before the Korean Patent Office. This has created a deep trust by us and our Japanese clients."

"Professional, mutual trust, easy communication, flexible prices."

"They are extremely responsive and very detailed.  Also, their fees are very reasonable."

"They are trustworthy and easy-going, while always being professional and responsive."

"Very detail-oriented and they always think of clients when asking questions."

"We have had long-term good relations, and we are aware of the quality of their services."

Linked Reviews
Patent

Case studies show prosecution, invalidation trials, and opposition work for clients across various industry sectors.

Trade mark

Case studies show the firm handled both contentious and prosecution matters for various clients.

Youngmin Park joins us for our ‘Five minutes with’ series to discuss learning languages, moonlighting as a drummer, and why late is better than never
Jinwon Chun discusses the need for vigilance, his love for iced coffee, and preparing for INTA
Sponsored

Sponsored

MIP Sponsored