Personal Profile:

Lawyer Chang Chun graduated from Beijing University of Technology and Lancaster University in the UK. Lawyer Changchun has long been engaged in intellectual property services related to patents, including patent application and patent litigation.

Lawyer Chang has long provided patent layout, patent application, reexamination, invalidation, FTO search, infringement litigation and other services for domestic and foreign companies. Lawyer Chang has provided patent application services for multiple multinational companies, especially multinational medical device companies, in China. He has also provided patent layout services for domestic research institutions and small and medium-sized enterprises in countries such as the United States, Japan, South Korea, the European Union, EU countries, Canada, Mexico, India, Brazil, Argentina, Australia, and New Zealand.

Typical case:

Representing the listed company Shenzhen Dianlian Precision Company in its layout of high-frequency signal connectors and core patents in major consumer electronics countries such as the United States, Europe, and Japan;

Representing listed company Shenzhen Yushun Electronics in the layout of its core patent for narrow bezel display modules in regions such as the United States and Japan;

Represented listed company Dongfulong Technology Co., Ltd. in laying out core patents for freeze-drying machines in the United States, India, and other countries;

Representing a well-known stationery company in Hong Kong to establish patents for their new products in the United States, Japan, South Korea, Canada, and various Southeast Asian countries;

Representing the Ultra Compact Instrument Research Institute of Harbin Institute of Technology in the patent layout of multiple patents related to its laser interferometer based microcavity measurement technology in the United States, United Kingdom, Germany, and Japan;

Representing domestic fan manufacturers in responding to infringement lawsuits and patent invalidation requests filed by internationally renowned fanless fan companies in China and Singapore;

The domestic research institutions representing multinational tobacco companies prepare and submit PCT applications in English as the application language, as well as patent layouts in the United States, China, Japan, and various European countries.

Representing a multinational aviation parts company to declare the patents of domestic competing enterprises invalid, and going through all the procedures of the review committee, first instance, and second instance;

Representing a multinational image analysis company in responding to another multinational enterprise's request for invalidation of multiple Chinese patents due to patent infringement litigation between the two parties worldwide.

Lawyer Chang's business also involves drafting financing contracts for technology-based enterprises and resolving labor disputes related to intellectual property.