China Science Patent & Trademark Agent Ltd

China Science Patent & Trademark Agent Ltd (CSPTAL) is a full-service IP law firm. Established in 1984 and one of the first firms granted a special licence by the State Council to handle foreign-related IP matters, CSPTAL has actively represented its foreign and domestic clients in their pursuits of IP rights and protection for over 35 years; it has been recognised as a premier IP firm by peers and clients all over the world.

With more than 300 employees, including over 160 patent attorneys, CSPTAL has become one of the largest IP firms in China and features among the top five IP firms in terms of quality and quantity of work. CSPTAL is committed to providing high-quality services to meet its clients’ need and maximising the value of their IP assets in China.

Technical expertise

A sophisticated level of technical knowledge and practical experience enables us to imagine what stems out of an inventor’s ingenuity being used in as many relevant technologies as possible. This approach offers a significant benefit to our clients when it comes to drafting, prosecuting and litigating patents. Each and every one of the firm’s 160-plus professionals has a science or engineering degree, with 80% holding a master’s and 17% a PhD in a wide range of technical disciplines. More than one-third of our professionals have worked in R&D in universities, research institutes and industries before starting their patent law practice. Our technical expertise is further extended and strengthened through continued recruitment of new talents from China’s most prestigious universities.

International experience

CSPTAL’s attorneys have extensive experience working with overseas companies and organisations. A large portion of our clients are multinational companies from every part of the world, which we support to protect, exploit and litigate their IP rights in China. We also provide a full complement of patent and trademark agency services to associate firms in more than 30 jurisdictions.

Many of our attorneys had studied, worked or received professional training in the United States, Japan, Europe and Canada, especially in law firms. We also have a deliberate policy of sending our attorneys on secondment to foreign law firms or clients’ sites abroad to keep abreast with developments in IP practice in important jurisdictions and to better understand clients’ needs.

Full coverage on IP services

Our IP services include a wide range of activities: procurement and enforcement of IP rights, licensing and litigation of these rights, IP portfolio management and corporate IP strategy consultancies.

Our patent service covers all technical fields, including electronics and electrical engineering, mechanical engineering, chemistry and chemical engineering, pharmaceutical and biotechnology with regard to:

  • drafting and prosecution of patent applications;
  • re-examination, invalidation and appeals;
  • judicial and administrative litigations;
  • counselling on corporate IP assets management;
  • opinions on infringement and/or validity;
  • patent search and analysis; and
  • technology licensing and transfer.

Our trademark service includes:

  • registration, renewal, assignment and licensing;
  • re-examination, cancellation, opposition, disputes and administrative litigations; and
  • infringement litigations and administrative enforcement.

The firm’s services further include:

  • copyright litigations and registration of software copyright;
  • enforcement of IP rights with Customs; and
  • protection of domain names.

Quality assurance

The quality of our work is paramount to us and we therefore invest heavily in quality assurance systems. High-quality work is achieved by using not only a team of excellent attorneys, but also a well-established quality control mechanism. A firm-wide quality committee is established to closely monitor daily work quality. The quality committee is made up of senior members of the firm. It sets forth the standards of service and organises mandatory training programmes to ensure that these standards are met.


We are active in most major IP organisations, including INTA, the International Association for the Protection of Intellectual Property, the All-China Patent Agents Association and the China Intellectual Property Society. Our attorneys attend and often speak at international and domestic IP conferences and forums, thus contributing to shaping the Chinese IP legal system.

Contact details

China Science Patent & Trademark Agent Ltd
3rd Floor
Building D
International Finance and Economics Centre
No 87 West 3rd Ring North Road
Haidian District
Beijing 100089

Professional contacts

Other offices

  • Hong Kong
  • Osaka
  • Paris
  • Shanghai
  • Tianjing
  • Tokyo
  • Washington DC
  • Wuhan

Sample client list

  • 3M Corporation
  • Chinese Academy of Sciences
  • Ericsson AB
  • Panasonic Corporation
  • Samsung Electronics Co Ltd
  • Tsinghua University

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