PROFESSIONAL EXPERIENCE
Mr. Chang has expertise in patent portfolio, patent prosecution, patent
invalidation, patent litigation and so on. Mr. Chang mainly focuses on legal
service in areas of life science,
chemistry, material, chemical engineering, and medical device. Mr. Chang also
participates in non-litigation services such as legal counseling and FTO.
EDUCATION
Mr. Chang obtained his
Bachelor and Master degrees in pharmaceutical engineering from Tianjin
University in 2001-2007.
Representative cases that Mr.
Chang has represented or participated include
Patent invalidation and IP
litigation
- Representing H.Lundbeck in defending anti-depression
drug patent (compound) (2021-2022);
- Representing H.Lundbeck in a series of invalidation
and infringement litigation cases (4 invalidation cases and 3 infringement
cases), the patents involved in the field of compounds, crystals, second use
and preparation process. All of four patents involved are successfully maintained
(2020-2021);
- Representing Fujiyakuhin Co., Ltd. in an administrative
litigation procedure (2021);
- Representing Align Technology INC in an
administrative litigation procedure (2021);
- Representing Gambro Hundia AB in the re-examination
procedure and administrative litigation procedures of a certain medical device
(2018-2021).
Non-litigation services
- Preforming FTO search and analysis for L'oreal (2018
and 2021);
- Drafting patent statement in drug bidding for Sanofi
(2016-2018).
QUALIFICATIONS
PRC Bar Qualification
Member of the PRC Patent Bar