In today's rapidly advancing 5G technology landscape, the competition for Standard Essential Patents (SEPs) has become increasingly intense, with major tech giants and innovative companies vying for dominance. In recent years, high-profile cases such as Huawei v. Conversant, OPPO v. Nokia, and L2 Mobile v. HTC have ignited global debates on SEP patent priority. These cases influence both technological evolution and reveal how courts worldwide are tightening judicial standards for SEP examination.