Mason Xi

Partner

Patent Attorney

Email: mason.xi@lexfieldlaw.com

Tel.: +86 10 8579 4592

Emphasis

● Patent infringement litigation

● Patent invalidation and related administrative litigation

● Patent infringement analysis and stableness analysis

Professional Highlights

Mr. Mason Xi has more than 14 years’ experience in counselling multi-national and domestic companies for intellectual property protection and enforcement in the fields of Telecommunication and Mechanics. Before joining LexField, Mason Xi worked in Beijing King and Wood (Shenzhen) Law Firm, Beijing IP aragon Law Firm and Beijing Commerce and Finance Law Offices.

Representative Cases

● Represented Qualcomm in Telecommunication SEP related licensing dispute case, multiple invalidation declaration cases;

● Represented Panasonic in Telecommunication SEP related infringement and licensing dispute case, provided standard mapping and validity analysis for multiple Telecommunication SEPs;

● Represented OPTIS in Telecommunication SEP related licensing dispute case

● Represented Ericsson in multiple Telecommunication SEP related  invalidation declaration cases;

● Represented Murata in multiple infringement and invalidation declaration cases regarding SAW filter related patents, provided patent infringement and validity analysis;

● Represented Epson in multiple infringement and invalidation declaration cases regarding printer and ink cartridge related patents, provided patent infringement and validity analysis;

● Represented YKK in multiple patent infringement administrative complaint and patent invalidation declaration cases;

● Represented Shockwave in multiple patent invalidation declaration cases;

● Represented Tetra in dozens of patent invalidation declaration cases;

● Represented DiDi’s affiliate in multiple patent infringement and invalidation declaration cases.

Education

Tsinghua University Automobile Engineering Department, B.S. in Engineering (2007)

Tsinghua University Law School, Juris Master in IP Law (2010)

Languages

Mandarin, English