The recommended categories of trademarks that need to be registered to build an APP mall are as follows:

1. You can choose "downloadable computer application software" in Category 9 of the "Classification Table of Similar Goods and Services", etc. Secondly, many developed apps will involve software and other related services. You can consider applying for registration in Category 42 "Computer Software Maintenance, Computer Software Updates" and other service items.

2. In addition, the registration category must be selected based on the services provided by the app. If the e-mall provides online trading services for various commodities, it should register for services in the 3503 category in Category 35, especially Sign up for the core service of "providing an online marketplace for buyers and sellers of goods and services".