selling brands on Taobao may be infringing, depending on whether the seller has legal authorization or license. According to the Trademark Law of China, it is an infringement to sell the registered trademark goods of others without the permission of the trademark owner. Therefore, if the seller sells other people's branded goods without relevant authorization or permission, it may constitute infringement.

However, in practice, some brands even reached a cooperative relationship with Taobao, and authorized sellers on Taobao platform to sell their branded goods. In this case, sellers have the legal right to sell these branded goods. In addition, some brands may allow parallel imports, that is, consumers can buy and sell legal parallel imports from overseas on Taobao.

to judge whether a specific situation constitutes infringement, we need to make a comprehensive analysis according to the specific situation of the goods and relevant laws and regulations. If there is infringement, the trademark owner can protect his rights and interests through legal means, including stopping the infringement and compensating for losses. Taobao platform will also take corresponding measures, such as deleting infringing goods and closing infringing shops.

to sum up, if the seller sells unauthorized branded goods on Taobao, it may constitute infringement, but the specific situation needs to be judged according to relevant laws and regulations and brand authorization. If you find any infringement on Taobao, you are advised to report it to relevant departments in time to safeguard your legitimate rights and interests.