Putting a watermark or seal in the photos of products are such an effort to protect the products in order not let other people "Copy & Paste" it and use it for their own purposes.
But it suppose "recommended" for fashionable and co-related with a designate products. not for consumable and common things.
Question is (even the seal/watermark been applied) : how about the design itself,? in fact we can not register the patent into all over the world right?
So in what level are the water mark sealing can protect the products?