How are the service life of patents determined? Chinese patents are divided into three types: invention patents, utility model patents, and design patents. So how are the patent lifespan determined? Patent life span If you need professional patent services, Bajie Intellectual Property can help you! Bajie Intellectual Property's intellectual property business is developing rapidly, focusing on trademarks, patents, copyrights, domain names and other intellectual property business directions. Bajie's intellectual property patent application and patent transfer agency services are recognized by the industry. You have patent transfer and patent application transaction needs. , please consult Bajie Intellectual Property Customer Service immediately. How are the patent service life defined? 1. Invention: An invention refers to a new technical solution proposed for a product, method or improvement thereof. The legal protection period is 20 years. 2. Utility model: Utility model refers to a new technical solution proposed for the shape, structure or combination of a product that is suitable for practical use. The legal protection period is 10 years. 3. Appearance design: Appearance design refers to a new design that is aesthetically pleasing and suitable for industrial application based on the shape, pattern or combination of the product, as well as the combination of color, shape, and pattern. The legal protection period is 10 years. How are the patent lifespan determined?