Cai Yong is an Attorney at Longan Law Firm (Guangzhou). His practice areas primarily focus on intellectual property, criminal practice, dispute resolution, corporate legal affairs, and intellectual property, trade secrets, and unfair competition for Internet and technology companies.

Professional Qualifications

PRC Legal Professional Qualification

Educational Background

Not provided

Work Experience

Oct 2020 - Mar 2021: Lifang & Partners (Guangzhou)
Apr 2021 - 2023: Longan Law Firm (Guangzhou)
Jan 2024 - May 2026: Guangdong Zhizhe Law Firm
May 2026 - Present: Longan Law Firm (Guangzhou)

Representative Cases

Computer Software Development Contract Dispute: Represented the software developer, successfully winning the lawsuit and recovering funds through enforcement
Unfair Competition Dispute: Represented a well-known listed daily chemical company, achieving a favorable modification of the judgment in the second instance and doubling the compensation amount
Trademark Infringement and Unfair Competition Dispute: Represented a listed food enterprise in handling an internet search engine keyword bidding infringement dispute
Contract Dispute: Represented a face mask manufacturing enterprise in handling a major processing fee dispute during the pandemic, achieving a complete victory
Copyright Infringement and Unfair Competition Series Disputes: Represented an apparel enterprise in undertaking market anti-counterfeiting enforcement
Unfair Competition (Trade Dress of Certain Influence) Series Disputes: Represented a well-known daily chemical brand in carrying out systematic rights protection
Patent Ownership Dispute and Technical Cooperation Contract Arbitration Series Cases: Represented an electroplating equipment enterprise in handling intellectual property ownership confirmation and technical contract disputes within the same technical cooperation background
Crime of Illegally Obtaining Computer Information System Data: Represented a well-known gaming enterprise in driving criminal enforcement
Crime of Counterfeiting Registered Trademarks: Represented a well-known daily chemical enterprise in conducting criminal anti-counterfeiting operations
Crime of Collusive Bidding: Secured probation for Defendant Huang during the review, prosecution, and trial stages
Crime of Disseminating Obscene Materials for Profit: Through multi-stage defense, secured a sentencing recommendation of under three years for a client whose case was initially identified as “particularly serious”
Crime of Contract Fraud & Forging or Altering Documents and Seals of State Organs: Represented the victim in filing a dual-charge criminal accusation concerning a real estate project investment cooperation dispute

Professional Profile

He has long focused on intellectual property litigation, major civil and commercial dispute resolution, corporate legal counsel, enforcement disputes, and criminal cases. He has accumulated practical experience in handling computer software development contract disputes, unfair competition disputes, trademark and copyright protection, corporate criminal rights protection, and economic crime defense.

Practice Style

His practice style is meticulous and flexible. He is highly communicative, values the integration of theoretical research and practical experience, and excels at identifying his clients’ core demands through effective communication to achieve comprehensive dispute resolutions. When handling dispute resolution cases, he evaluates matters from multiple dimensions—including litigation strategy, evidentiary paths, negotiation leverage, enforcement feasibility, and commercial impact—striving to protect clients’ rights while facilitating substantive and thorough resolutions of disputes.

Award-Winning Cases

In the case of a computer software development contract between a Chengdu Technology Co., Ltd. and a certain Technology Co., Ltd., Attorney Cai represented the software developer. Throughout the first-instance proceedings at the Guangzhou Intellectual Property Court and the second-instance proceedings at the Supreme People’s Court, he successfully won the lawsuit and recovered the funds through enforcement, protecting the client’s contractual rights and commercial interests. This case was recognized as a “2022 Recommended IP Learning Case” by the Guangdong Intellectual Property Protection Association.

Award-Winning Cases

Represented a well-known listed Chinese daily chemical company in filing an unfair competition lawsuit against manufacturers and sellers who used packaging and trade dress highly similar to those of the client’s proprietary products. The case yielded favorable outcomes in both instances. The court of second instance adjusted the damages, rendering a modified judgment of RMB 2 million, which successfully increased the compensation amount and demonstrated the commercial value and market influence of the product’s trade dress. This case was selected as a “2023 Lingnan Intellectual Property Litigation Outstanding Case” and received the “Second Prize for Business Achievement of the Year 2023.”

Selected Clients (Partial List)

(1) Internet & Gaming Industry: Tanwan Games, 37 Interactive Entertainment, Rastar Interactive, Yile Interactive, Youlang Games, Shanghai Yingzhisen, Shanghai Yiyouxuan, Haoji Tianxia, Guangzhou Bingxue Network, Shanghai Congchuang, etc.;

(2) Daily Chemical Industry: Fanmeili (Beijing) Cosmetics Trading Co., Ltd., Guangzhou Huanya Cosmetics Technology Co., Ltd., Guangzhou Xibo Trading Co., Ltd., etc.;

(3) Food & Apparel Industry: Shantou Xingdeli Garment Co., Ltd., Jiangmen Ligong International Food Co., Ltd., Shanghai Beiyin Qingyue Brand Management Co., Ltd., etc.;

(4) Culture & Entertainment Industry: Shenzhen Dabaixing Picture Co., Ltd., Shanghai 108 Culture Media Co., Ltd., Beijing Yuexing Shijie Culture Media Co., Ltd., Guangzhou Enya Innovation Technology Co., Ltd., Yangzhou Sixi Creative Planning Co., Ltd., etc.;

(5) Other Companies: SHV Energy (China) Investment Co., Ltd., Dongguan Suyuan Automation Equipment Co., Ltd., Guangzhou Mingluan Photoelectric Technology Co., Ltd., etc.