Apple's patent application is not only for a fillet, but for the overall appearance, function or technological innovation of the design. In terms of design, Apple will apply for a design patent, which can cover the overall appearance of the product, including shape, color, texture and so on. In terms of technology, Apple will also apply for invention patents, which can cover the specific technical realization of products, including hardware, software, algorithms and so on. Apple's patent application is not only for a fillet, but for the overall design or technical realization of the product.