According to media reports, young people no longer have the "anxiety of changing machines" as in the past, and for the reasons, respondents said that one is that mobile phones are selling more and more expensive, and the other is that mobile phones are not transformative innovation. Compared with mobile phones with thousands of yuan, a few to dozens of dollars of mobile phone cases may also meet people's expectations for "new". According to the Tianyancha App, there are currently more than 16,000 patent applications related to mobile phone cases in the mainland, and more than 8,300 have been authorized. Among all the application information, there are more than 7800 designs, 6200 utility models and nearly 2100 inventions. Since 2012, there has been a rapid upward trend in mobile phone case patent applications, with the number of applications reaching a peak from 2018 to 2021, with more than 2,000 applications per year.
