While the Korean Trademark Act does not explicitly mandate pre-registration disclosure, trademark application data are currently published through KIPRIS immediately after filing. Although this operational approach facilitates trademark searches and third-party monitoring, the lack of a clear legal basis and a defined scope of disclosure raises concerns regarding procedural predictability. Rapid advancements in the digital environment have enabled trademark information to spread at an unprecedented speed. These developments increase the risk of “Trademark Spoilers,” whereby a company’s branding or business strategies are prematurely exposed, imposing unexpected burdens on applicants. This study argues that the immediate disclosure of trademark application data is a matter of policy choice rather than an essential element of the trademark system. Accordingly, it proposes the introduction of a “Selective Trademark Disclosure System,” which would allow applicants to choose the timing of disclosure within a specified period. To prevent institutional abuse, the system is designed to incorporate an automatic disclosure mechanism after a specified period (e.g., one year), ensuring that non-disclosure does not persist indefinitely. Such a framework would protect less-experienced applicants while enhancing predictability for third parties, ultimately providing a viable policy alternative that promotes greater consistency in the trademark law system.