I really appreciate to everyone letting me know about the copybot!
I sent the "DMCA Copyright Infringement Notice" to Linden Lab via a FAX. Then, the copy item in the marketplace was removed by Linden Lab.
This item was removed.
The copy item was sold as a full permission, so some people have already purchased it. I'm afraid some designers purchase the full perm items, and they are selling them as their own items.
I hope the designers and also customers do not purchase the copybotted items, or sell them.
Thank you so much for understanding!