Xiaolin Dang

Ranked in China: Domestic
IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

Gold - Individuals: prosecution

Founded in 1986 as China’s first privately owned IP firm, Sanyou IP remains a go-to firm for technically demanding patent applications. Currently home to 160 scientifically adept patent attorneys, the outfit has a crack prosecution team tasked with steering critical drafting matters by both domestic and global industry leaders. One recent highlight includes the successful prosecution of a cutting-edge LCD technology on behalf of LG Display. Playing a significant part in this matter is agile portfolio manager and electronic expert Jiuliang Liu. Working alongside him is head of patent drafting team Haiping Tao, whose rich experience in patent filing allows her to undertake pedagogical tasks frequently as a Chinese IP law expert. Having handled over 1,000 patent applications and almost 100 invalidation cases over the past 13 years, general manager Xiaolin Dang’s proven success extends from drafting to re-examination, licensing and disputes.

Xiaolin Dang's Profile

Xiaolin Dang is managing partner of Beijing Sanyou Intellectual Property Agency Ltd and a leading IP attorney in China, having received numerous awards from China’s National Intellectual Property Administration and the All-China Patent Agents Association (ACPAA), including receiving titles such as “Leading Role in IP Field” and “High-level Talent in Patent Agency Industry”.

Mr Dang graduated from Peking University and studied at Kent Law School in Chicago, receiving an LLM in IP law. He is very experienced in IP litigation and prosecution. His practice specialties include drafting of patent documents, application, office action response, invalidation, re-examination, infringement litigation, patent search and legal consultation in the field of mechanical engineering and related fields. He has rich experience in patent-related legal services, especially patent litigation and licensing. Over the past 13 years, Mr Dang has handled over 1,000 patent applications, almost 100 patent invalidation cases and tens of patent litigation cases. He has won many important cases for clients in the court room.

Mr Dang is vice president of the ACPAA and a committee member of its Litigation Committee. He is also listed in the first group of High-level Talents in the Patent Agency Industry (litigation area), in the first group of Leading Talents of China.

Firm Profile

Founded in 1986, Beijing Sanyou Intellectual Property Agency Ltd (Sanyou IP) was the first private IP firm in China.

Now a leading IP law firm, Sanyou IP helps domestic and international clients to obtain and enforce their IP rights by providing wide-ranging, high-quality services. In 2011, upon the completion of a streamlining management procedure, Sanyou IP obtained the ISO 9001 certification for quality management.

By emphasising professionalism and craftsmanship, Sanyou IP has been named an Outstanding Patent Agency and an Outstanding Trademark Agency for several consecutive years. Our team of motivated and professional attorneys represents a combination of the highest technical and legal qualifications and years of practical experience. Many of our attorneys have been practising since the establishment of the Chinese patent and trademark systems, and several are former senior patent examiners for the patent office of the China National Intellectual Property Administration, or former first-rank examiners of the Patent Re-examination Board. Our clients consequently benefit from our unparalleled insight into China’s IP laws and procedures.

Our headquarter is located in Beijing and we also have branch offices in Suzhou, Dalian, Hong Kong and Japan. Sanyou IP employs approximately 400 staff, including 160 patent attorneys, 50 patent engineers, 20 general lawyers and 30 trademark professionals.

With such talented people, we offer a one-stop IP service to our clients. We provide a comprehensive range of IP services relating to the prosecution and litigation of patents, trademarks, copyright, domain names, unfair competition and trade secrets. Our expertise encompasses all major technical fields, including biochemistry, biology, chemistry, computer science, physics, optics, materials, electrical, electronics, engineering, mechanics, pharmaceuticals and telecommunications.

Our motto is “quality, efficiency and loyalty”. At Sanyou IP, we pride ourselves on the quality of our work and constantly strive to provide the highest level of service tailored to the individual needs of each client. Our team of top legal professionals, with its wealth of experience and proven success in the full range of IP services, stands ready to protect clients’ IP rights both in China and around the globe.

As a standing committee member of the All-China Patent Agents Association (ACPAA) and the China Trademark Association (CTA), Sanyou IP plays an active and important role in China’s IP industry. Sanyou IP is also a member of several international IP organisations, such as the International Trademark Association (INTA), the International Association for the Protection of Intellectual Property (AIPPI) and the Licensing Executives Society (LES).

Dedicated to intellectual property for over 35 years, Sanyou IP is always looking to improve its services and quality of work. The firm is trusted and supported by businesses across the industry.

Firm and team members’ affiliations

  • Vice president of the ACPAA
  • President of the Capital Intellectual Property Services Association
  • Standing committee member of the CTA
  • Corporate member of the Beijing Patent Agents Association
  • Executive council member of the Copyright Society of China
  • Member of INTA
  • Member of the AIPPI
  • Member of LES
  • Member of the International Federation of Intellectual Property Attorneys
  • Standing committee member of the China Intellectual Property Society

The firm acts also as the intern training base for the LLM in IP laws of Peking University.

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