How can someone sell branded products under their own different brand?

Sell On Amazon Listing Management & Reports
1

I was selling the exact same product with the brand which was on the product, but owner gave me IP Violation, because he create listing under his different brand.

How it is possible when you creating listing you need to provide the photo of the product with your name brand on it?

2

You cannot create your own listings for already branded products. You can make new ASIN listings if it’s a generic product and you have your own brand name.