Hello, great question. To answer this thoroughly. There are two scenarios where this is not copyright infringement.
1.) Due to this following under "Fair Use." A person is allowed to use copyrighted material for the purpose of, "criticism, news reporting, teaching, and research." If you can make an argument as to how renaming a tool to a copyrighted name follows one of these. You'll be fine under Fair Use.
2.) Secondly, because of the way Minecraft servers work. They "technically" don't have to follow certain portions of The Constitution. For example, Minecraft Servers have the right to limit your use of free speech. Thus, Minecraft players don't need to follow Copyright laws. That and the fact that copyright is made by you taking something without permission and taking credit for it. No one thinks you own the Name of "Ubisoft," and as long as you don't take credit for the name...then.
Bam Loophole!
Hope I could help - GoldenGaming (_GoldenAiming)