Korea Institute of Patent Information
- Public service provided under the Invention Promotion Law. In Korean and English.
- http://www.kipris.or.kr/

Y.S. Chang & Associates
- Prosecution and litigation of all intellectual property matters (patents, trademarks, domain names, designs, copyrights, and licenses). With firm profile, attorneys and staff guide, information center, forms and fees. In English, Japanese, and Korean.
- http://www.yschang.com/

Markpro Company
- Specializes in the search of patents and trademarks, transfer of technology, patent annuity administration, and translation of technical documents into major international languages.
- http://www.markpro.com/

Kwan Ho Shinn and Associates
- Patent (PCT), utility models, design, trademark, copyright, trial, opposition and litigation related to intellectual property laws.
- http://shinnpatent.co.kr/