In which field do foreign enterprises and individuals apply for invention patents?

Mobile communication. According to the query of the World Wide Web, the number of invention patent applications by foreign enterprises and individuals in the field of mobile communication accounts for 5 1%, so the number of invention patent applications by foreign enterprises and individuals in the field of mobile communication accounts for the largest proportion. An invention patent refers to a new technical scheme proposed for a product, method or its improvement. Invention, utility model and design together constitute the object protected by China's patent law.