Mr. Li Zhidong holds a Master's degree in Biochemistry from Tsinghua University. Leveraging his profound academic background and technical expertise, he has demonstrated exceptional proficiency across multiple fields, including biology, molecular biology, organic chemistry, and pharmacology.

With over 17 years of experience in patent prosecution, he specializes in chemical, pharmaceutical, and immunology-related technologies. Notably, in the field of AI-driven drug discovery, Mr. Li’s deep understanding of molecular genetics and pharmaceutical technology has enabled him to provide invaluable guidance and strategic advice to numerous enterprises.

Beyond his mastery of patent prosecution processes, he has extensive hands-on experience in patent enforcement, including invalidation and infringement litigation. Additionally, he frequently advises corporate clients on IP strategy and standard-essential patents (SEPs), helping them strengthen IP protection and maximize the value of technological innovation.

● Yabao Pharma v. Takeda Pharma (Patent No. 201210399309.3) – Represented a domestic pharmaceutical company in a successful patent enforcement action, resulting in the complete invalidation of a key alogliptin-related patent.

● Yabao Pharma v. Takeda Pharma (Patent No. 201210332271.8) – Represented a domestic pharmaceutical company in a successful patent enforcement effort, securing partial invalidation of a critical alogliptin-related patent.

● Luo Xiaowei v. Shenzhen Xingwang (Patent No. 201210037789.9) – Successfully defended the patent holder, ensuring the continued validity of a patent covering a commercially viable rice variety, supporting patent portfolio development.

● Yabao Pharma v. Victor Segalen Bordeaux II University (Patent No. 2008801118925) – Achieved a favorable ruling with partial invalidation, clearing legal obstacles for the client’s technical implementation (patent enforcement).

● Jiang Ying v. Roche (Patent No. 2013800412221) – Secured partial invalidation, enabling the client’s technology to proceed with commercialization (patent enforcement).

● Jiang Ying v. Samsung (Patent No. 201510428568.8) – Won partial invalidation, allowing the client’s technical solution to move forward with commercial deployment (patent enforcement).