This chapter provides a comprehensive overview of inductive power transfer (IPT) technology, focusing on its application in long-range wireless power transmission (WPT). It begins by exploring the growing demand for WPT in high-voltage monitoring, smart grids, and industrial automation, emphasizing challenges such as efficiency degradation, magnetic coupling limitations, and parasitic effects at extended distances. The analysis systematically reviews magnetic coupling structures, including planar and three-dimensional designs, evaluating their trade-offs between misalignment tolerance, coupling efficiency, and air-gap extension. Critical discussions address the impact of coil parasitic parameters and rectifier impedance characteristics on system performance, alongside strategies like distributed compensation and harmonic mitigation to enhance efficiency. Emerging solutions, such as optimized core geometries and adaptive impedance matching, are highlighted as pathways to overcome existing barriers. The chapter concludes with future directions for advancing WPT systems, aiming to bridge theoretical insights with practical scalability for next-generation applications.