It depends. If anyone can recreate your custom furniture rendering using pre-built templates in the 3d software, then it is not as protected you would want it to be. However, if your custom design is "unique" and cannot be recreated with pre-built templates, then it is your effort and the idea is stolen without any payment. If you have proof of sending the quote, design via email or some other means and a copy of your design work in the article, then you got a case. Get an attorney from your state to proceed further. Good luck.
Disclaimer:
The response is general in nature and cannot be construed as legal advice. If you would like to have legal advice, then please consult any competent attorney privately to discuss your case and establish a proper attorney-client relationship. I only work through my website at https://affordabletrademarkattorney.com/
Answered on Dec 15th, 2019 at 12:21 PM