The adult doll industry has entered a period of technological explosion. The patent database in 2024 showed that related applications surged by 72%. Temperature-sensitive color-changing silicone technology allows the hentai sex doll to achieve emotional skin color changes, while alien sex doll designers are competing to register patents for bionic motion structures. RealDoll's latest product is equipped with an AI dialogue module, which triggers voice interaction through pelvic sensors, blurring the boundaries between toys and companion robots. Patent lawyers warned that there is a dispute over the "functionality" and "artisticity" of fantasy-themed designs.