Hi @Kaseijin ,
While there is nothing natively available to prevent duplication of copyright material, Shopify takes intellectual property infringement very seriously. We offer a portal for store owners to report suspected IP theft.
Meanwhile, you may be able to do something with the code as outlined by @LitCommerce , but if you’re not familiar with coding I would recommend consulting a Shopify Expert (they’re a team of third-party developers who can make custom changes to your store on a contracted basis).
I hope this helps!