I bought a doll and made a mold of it. I changed the nose and lips on the new molded doll and switched the body of that molded doll with another doll body . I then made a mold of that doll. Can I sell the new doll as my own, since I have changed the appearance? I plan on changing the hair color and clothes as well and then sell them on ebay.
Yes, it is
possible for you to purchase dolls, and create new ones from the ones you legally purchased, and it is
possible for you to then re-sell these altered dolls on eBay.
But there are caveats when you alter a product and sell it.
You must be aware of any patent and trademark rights that may exist to restrict your use. You must be careful not to infringe on the rights of the trademark/patent holder.
While you can re-sell dolls in their
original condition and identify them by their trademarked name (e.g., you can legally purchase a Barbie doll and then re-sell that Barbie doll, calling the Barbie doll a Barbie doll in your ad), you cannot sell
altered dolls with the original trademark on them and you cannot advertise the
altered dolls using the trademarked name or logo, without the risk of a lawsuit.
Examples:
*You can buy several Hanes tee-shirts and cut off the Hanes labels. You can then create designs on the tee-shirts and re-sell the tee-shirts. But you cannot sell them as Hanes tee-shirts. You cannot use the trademarked Hanes name or logo on your tee-shirts or in your advertising.
*You can buy several bags of M&Ms and bake batches of cookies using M&Ms as an ingredient. You can then sell these cookies. But you cannot sell the cookies using the trademarked name or logo in your advertising or on your packaging.
AND, there are always legal risks.
One risk is that companies are very protective of their trademarks and their trademarked products. They are not shy about suing anyone who infringes on their rights, or who they
think are infringing on their rights.
Another problem is that some products may not only be protected under trademark laws but may also have patent protection (for example, on body shape).
Your question is not an easy one to answer without knowing what exactly you are intending to do and what dolls you are planning to use. I suggest you discuss your plans with an attorney in your area so that you can better assess the risks and weigh the possible costs.
Good luck.