YOON & LEE provides services for Opposition, Information provision, Revocation trial, Invalidation trial, Trial to confirm scope of rights, Appeal against Decision to reject, and Trial for revocation of appeal decision, as well as the preparation of warning letters or writing and sending responses. Based on the experiences and knowledge accumulated while providing intellectual property application/registration and trial/appeal services to many of Korea’s leading conglomerates for many years, patent attorneys at YOON & LEE have the expertise and qualities to maximize the financial interests of our clients in trials and appeal cases.

In addition, we provide legal services related to IP trials and appeal cases in areas such as the United States, Japan, China, and Europe using our overseas network that we have built up by working together with our associates for many years. In particular, in trials and appeal cases that occur overseas, we provide systematic, efficient, and effective work performance and services through close cooperation with local agents, as well as providing the best results for our clients by prioritizing smooth communication with them.