About Our Firm
AJU KIM CHANG LEE
Since 1965, AJU KIM CHANG LEE has stood at the forefront of intellectual property law in Korea, partnering with clients to protect and advance their most valuable assets.
- English name
- AJU KIM CHANG LEE
- Korean name
- 특허법인 아주
- Also known as
- AJU International Law & Patent Group; AJU Patent
- Legacy Korean search name
- 아주국제특허법률사무소
Greeting
“Korea’s leading IP firm — walking a singular path since 1965.
Establishment of AJU KIM CHANG LEE
AJU KIM CHANG LEE was founded in 1965 by the late C.H. Park — former Commissioner of the Korean Intellectual Property Office (KIPO) and Korea’s first chemistry-specialist patent attorney. Since its founding, the firm has walked a singular path as a dedicated intellectual property firm (IP Firm) for domestic and international clients alike.
One Stop IP Service
AJU KIM CHANG LEE has built an outstanding reputation across every dimension of intellectual property practice — from patent, trademark, and design prosecution and registration in Korea and around the world, to copyright, domain name, and computer program protection; trials and litigation before KIPO and the Patent Court of Korea; civil and criminal IP infringement proceedings; technology transfer and licensing; and IP search and valuation.
The firm brings together patent attorneys with deep expertise across mechanical engineering, electrical engineering, semiconductors, chemistry, biotechnology, pharmaceuticals, and materials science — along with IP litigators who have accumulated years of broad courtroom experience — forming a cohesive IP team that delivers Korea’s highest level of one-stop service for all corporate intellectual property needs.
Our Promise
AJU KIM CHANG LEE strives every day to build trust and enduring relationships with clients, drawing on our long history, tradition, and the passion and dedication of professionals with the highest expertise in each field. We keep our ears and eyes sharply attuned to our clients’ perspectives, constantly adapting to market changes and anticipating evolving needs — and we harness all of our capabilities to deliver the finest service to every client.
Our Core Values
Established in 1965
AJU KIM CHANG LEE was founded by the late C.H. Park, former Commissioner of the Korean Intellectual Property Office and Korea's first chemistry-specialist patent attorney. Since then, the firm has walked a singular path as a dedicated IP firm for domestic and international clients.
One Stop IP Service
From patent, trademark, and design prosecution to trials, litigation, technology transfer, licensing, and IP search and analysis — AJU KIM CHANG LEE has built an outstanding reputation across every dimension of intellectual property practice.
Trust With Clients
Built on a long history and tradition, our professionals combine deep expertise with passionate dedication to forge lasting trust and close bonds with every client we serve.
One Stop Service
Every IP need —
under one roof.
AJU KIM CHANG LEE combines field-specific patent attorneys with IP litigators of broad courtroom experience to deliver Korea’s highest level of one-stop service across all corporate IP matters.
Patent, trademark, and design prosecution & registration
Copyright and domain name protection
Trials before KIPO and the Patent Court of Korea
Technology transfer and licensing
IP search, analysis, and valuation
Drawing on 61 years of accumulated expertise,
we remain committed to being wherever
our clients need us — now and in the future.
Our Journey Since 1965
61 Years of History
Carrying forward the founding spirit of Korea’s first chemistry-specialist patent attorney, we have written the history of Korea’s leading IP firm.
Established by C.H. Park — former Commissioner of the Korean Patent Office and Korea's first chemistry-specialist patent attorney.
Established by C.H. Park — former Commissioner of the Korean Patent Office and Korea's first chemistry-specialist patent attorney.
Renamed to Park & Jung Patent & Law Office.
Renamed to Park & Jung Patent & Law Office.
Changed name to Law Office of AJU International. Mr. Eun-sub Jung became the first person in Korea to hold both patent attorney and attorney-at-law qualifications.
Changed name to Law Office of AJU International. Mr. Eun-sub Jung became the first person in Korea to hold both patent attorney and attorney-at-law qualifications.
Merged with Union Patent & Law Firm and Naewoi Patent & Law Firm.
Merged with Union Patent & Law Firm and Naewoi Patent & Law Firm.
Converted into a legal entity under the name of AJU & LAW FIRM.
Converted into a legal entity under the name of AJU & LAW FIRM.
Opened branch offices in Cheonan and Ilsan.
Opened branch offices in Cheonan and Ilsan.
Opened branch office in Yongin.
Opened branch office in Yongin.
Merged with You Dong Ho Patent & Law Firm.
Merged with You Dong Ho Patent & Law Firm.
Partnership established with Kim Chang & Lee; renamed to AJU KIM CHANG LEE.
Partnership established with Kim Chang & Lee; renamed to AJU KIM CHANG LEE.
Opened branch office in Gwangju.
Opened branch office in Gwangju.
Opened branch office in Daejeon.
Opened branch office in Daejeon.
Opened branch office in Daegu.
Opened branch office in Daegu.
Relocated headquarters to Donghee Building, 302 Gangnam-daero, Seoul — 3F and 7–14F.
Relocated headquarters to Donghee Building, 302 Gangnam-daero, Seoul — 3F and 7–14F.
Timeline · 1965 — 2026
61 Years · 12 Milestones
Location & Contact
How to Find Us
For first-time visitors, the easiest route is to stay on Gangnam-daero from the subway exit and enter Donghee Building. AJU KIM CHANG LEE's reception is on the 10th floor.
- Address
- 3F & 7–14F, Donghee Bldg., 302 Gangnam-daero, Gangnam-gu, Seoul 06253, Republic of Korea (Reception at 10th Floor)
- Phone
- (+82 2) 3016-5040 (09:00~18:00)
- Fax
- (+82 2) 3016-5060
- ajupatent@ajupatent.com, ajupat@ajukimchanglee.co.kr
Donghee Bldg.
Look for 302 Gangnam-daero. After entering the building, go to Reception on the 10th floor.
Show this address
Donghee Bldg., 302 Gangnam-daero, Gangnam-gu, Seoul 서울 강남구 강남대로 302 동희빌딩
Do not turn early
Both subway routes are straight walks on Gangnam-daero. If you leave the main road, check the map again.
Subway Access
Exit-to-office guide
Gangnam Station
Exit 4Shorter walk- 1Leave through Exit 4.
- 2Stay on Gangnam-daero and walk south.
- 3Continue straight for 400 m.
- 4Enter Donghee Bldg.; Reception is on 10F.
Yangjae Station
Exit 3Straight walk- 1Leave through Exit 3.
- 2Stay on Gangnam-daero and walk north.
- 3Continue straight for 600 m.
- 4Enter Donghee Bldg.; Reception is on 10F.
Bus Access
Woosung Apartments Stop
Blue Buses
Inter-city lines
Red Buses
Express lines
Airport Limousine
Airport route
Our Office
Donghee Building
VIP Lounge
Corridor
Office Overview