As I pointed on the post, I'm modeling my real-life living room. The shelf isn't a pure invention from myself, but based on a real object.
Before working on it, I verified if modeling IRL objects (and then selling the model) was somehow against the law and it apparently isn't, according to this thread:
https://www.cgtrader.com/forum/general-discussions/is-it-legal-to-create-and-sell-3d-models-of-existing-real-world-items
It's not illegal. The only issue is when you model something in the real world that has a brand name or brand identity that the company wants to protect. BMW, for example, was going to sue people who modeled their cars without permission and some model stores were forced to remove their cars from the list of models. This was years ago, but that's just an example. In your case, there's nothing you can do about someone else creating that same exact object and uploading it to sell since you did not invent that object in the real world to begin with. In other words, it's not a unique object and you don't own the brand.
