Chang Tsi & Partners has a team of patent attorneys with strong technical expertise and extensive practical experience, focusing on patent protection, invalidation, and enforcement. 

We have represented clients across the Greater China region and internationally in technically complex and high-impact cases. Through patent litigation, invalidation proceedings, administrative enforcement, customs protection, and cross-border actions, we safeguard our clients' innovations throughout Greater China and Asia. 

We also assist clients with patent monitoring, competitor patent analysis, and freedom-to-operate (FTO) assessments to proactively manage risks. Our patent litigators are equally skilled in negotiation, settlement, and licensing transactions, always aiming to maximize client value. 

With broad industry coverage and cross-border capabilities, Chang Tsi is uniquely positioned to develop and implement effective patent protection and enforcement strategies across Asia.