Zendrop can't verify every product in its catalog for patent compliance. With a catalog that grows daily, that review isn't feasible, vetting the products you sell is your responsibility as the seller.
Before listing any product, confirm it doesn't infringe on existing patents, trademarks, or copyrights. Patent databases are publicly searchable. Research any product you're unsure about before you start selling it.
For guidance on specific product types, see How to Handle Branded, Copyrighted, and Trademarked Products on Zendrop.
Vet every product before listing it. You're responsible for what you sell.