conflicting and challenging time

This week I have had to deal with one of the most challenging things in Etsy that I have come across - the question of originality. It turns out that some of the pieces of work that I have been making, most notably, my small swearing toys, are a similar concept to some of those that a seller on Etsy already makes. At first, I thought, well, that's weird, but not unheard of - ideas are rarely unique, and Etsy is a truly global marketplace. There is Coke and Pepsi, so there will inevitably be pieces that have a similar look, even if they are developed millions of miles away. However, I have just received an accusation of copying, which didn't make me feel comfortable at all. The last thing I want is to have my brand associated with a lack of originality. So I have decided to stop making those toys, and to phase them out of my store as well, and delisted the most similar ones today. I'll be working on new designs over the next couple of days to rebuild my store stock, and I really want to just leave the whole thing behind me. I am sure that I am not the only seller to go through this. I know I would feel angry if I saw what appeared to be copies of my work, and I don't want a seller to feel that. I guess it is just one of the conflicts of having a truly global marketplace - how does one genuinely manage copyright issues?