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Introduction

Joonghan (Joseph) Jo is a Partner at Cha & Kwon Law Firm. He is a licensed attorney in Korea and California and a patent attorney in Korea. He holds a Juris Doctor degree from the United States and specializes in startup law, venture capital, international legal matters, and technology & AI-related fields.
Recognized for his expertise in international law, he was selected as a Distinguished Attorney by Lawyers of Distinction's National Advisory Board in 2024. U.S. media have described him as:
“Mr. Jo is a distinguished legal professional with a robust career in international law, focusing on business law and cross-border litigation in both California and South Korea.”
Leveraging his experience managing law firms in Korea, San Francisco, and Silicon Valley, he provides comprehensive legal and business advisory services to both Korean and U.S. companies. He offers strategic legal guidance to startups entering the U.S. market, assisting them from the seed stage to exit. His expertise also extends to AI startups, supported by his hands-on experience developing ChatGPT Assistant APIs.
Committed to providing high-quality legal services, Mr. Jo believes that effective counsel requires deep industry and business insight. Drawing on his Silicon Valley legal experience, he delivers tailored, business-driven legal solutions that go beyond traditional legal advice.

Experiences

2025 ~ Partner, Cha & Kwon Law Firm

2023 ~ Founder, The Jo Law Firm, PC (San Francisco)

2022 ~ 2024 Open Door Legal (San Francisco), Civil & Employment Team

2016 ~ 2019 Judge Advocate Officer, Republic of Korea Army

External activities

2024 ~ Legal Advisor, OneiSoft Co.

2024 ~ Legal Advisor, One F&C Co.

2024 ~ Legal Advisor, BabeChat Inc. (U.S.)

2024 ~ Legal Advisor, Moohan Co.

2023 ~ Attorney of Record in the United States District Court, the Northern District of California

2023 ~ Attorney of Record in the United States District Court, the Central District of California

2023 ~ SF Bar Association, IP Section

2021 ~ 2023 Senior Production Editor, Hastings Law Journal

Education

2020 ~ 2023 University of California College of the Law, San Francisco (J.D.)

2013 ~ 2016 Chonnam National University Law School (J.D.)

2006 ~ 2012 College of Law, Dankook University (LL.B.)

Qualifications

2023 Admitted to Practice, California

2017 Certified Patent Attorney, South Korea

2016 Admitted to Practice, South Korea

Languages

  • Korean

  • English

Practice Areas

  • Corporate Law

  • Startups

  • Venture Capital

  • International

  • Technology

  • AI

  • SaaS

  • Intellectual Property (IP)

  • Copyright

  • Entertainment

  • M&A

  • IPO

  • Privacy Law

  • International Litigation

Publications

2023 Joonghan (Joseph) Jo, Public Enforcement and Disability Law: A United States-South Korea Comparison, 75 UC L.J. 199 (formerly Hastings L.J.) (2023). Indexed in SSCI Journals.