Practice Areas

• Patent Infringement Litigation
• Patent Invalidation
• Patent Administrative Litigation
• Standard Essential Patent (SEP) Disputes
• IP Disputes in High-tech Industries
• Design Patent Infringement and Invalidation

Technical Fields

• Semiconductors & Integrated Circuits
• Computer Technologies
• Artificial Intelligence & Internet
• Power Electronics Equipment
• Telecommunications
• Photvoltaics & New Energy Batteries

Years with IP Matters

2006 until now

Professional Experience

• Partner, Chang Tsi & Partners
• Partner, Lung Tin Law Firm 
• Consultant, King & Wood Mallesons, Beijing, China
• Senior Panel Leader, Patent Reexamination Board, CNIPA

Representative Cases

In the field of communication SEPs

• Represented Qualcomm in a series of SEP disputes with Meizu, achieving overwhelming advantage in both infringement and invalidation proceedings, eventually leading to settlement.
• Represented Huawei in a series of SEP disputes with Samsung in China, involved in claim mapping and patent stability analysis; parties settled.
• Represented IPB in SEP licensing negotiations with a Chinese smartphone company, involved in claim mapping and FRAND rate analysis.
• Represented Hytera in SEP-related disputes with Motorola involving non-infringement declaration and antitrust litigation.
• Represented HTC in SEP-related cases against a foreign company, won in invalidation and administrative litigation; civil case dismissed by court.
• Represented Xiaomi in SEP invalidation against Royal KPN over audio-video codec patents, successfully invalidated the patent.

In the field of semiconductors and photovoltaic energy

• Represented Qualcomm in infringement and invalidation cases against Transsion involving semiconductor chips; parties settled.
• Represented Beijing Juli against Shenzhen Jinyi in ETC chip disputes; patent invalidated, court dismissed claims.
• Represented SK Hynix in memory chip patent disputes with a foreign company; patent invalidated, claims dismissed.
• Represented Nikon against Zeiss in lithography patent administrative litigation; settled.
• Represented Hanergy against CNIPA in a solar PV patent case; court supported client, ruling to revoke invalidation decision.
• Represented Nanjing Weimeng in IC layout design dispute with Shenzhen Quanxin; successful second-instance defense, parties settled.
• Represented Jingfeng Mingyuan in power chip case with Silergy; partial invalidation obtained, no infringement found.
• Represented Beijing Angruiwei in IC layout design and revocation case with Shenzhen Guomin Feixiang; opinions accepted, settled.
• Represented Hanwha Q CELLS in patent invalidation and litigation against Risen Energy; patent invalidated, claims dismissed.
• Represented Trina Solar in billion-RMB solar patent invalidation cases against Canadian Solar; ongoing.
• Represented Jinko Solar in invalidation cases against LONGi Green Energy; ongoing.

Other high-tech IP cases

• Represented China Merchants Bank in Supreme Court retrial involving secure storage circuit patent; retrial request dismissed.
• Represented Fuji Xerox in printer core patent case; patent invalidated, claims dismissed.
• Represented Nidec against LG in motor equipment patent dispute; partial invalidation achieved.
• Represented Mitsubishi Electric in home appliance patent and design litigation; patents upheld, won infringement litigation.
• Represented Siemens against Lumi United in switch design patent case; won infringement, opponent withdrew invalidation twice.

Education

Master of Laws, Renmin University of China, 2013
Master of Engineering in Microelectronics, Xi'an Jiaotong University, 2006
Bachelor of Engineering in Electronics, Xi'an Jiaotong University, 2003

Bar Admission

China Bar
China Patent Bar

Languages

Chinese
English