This whole thread is a question for a lawyer.
But for real...just change the name of your project. It sucks, but the ruling was handed down, you lost the dispute.
Nobody's going to mind that the name changed. Firefox used to be called Firebird and changed due to trademark disputes. Dozens of open source projects have changed their names when they forked off of a corporate project, like LibreOffice and MariaDB.
I know that OP may be fond of the name but it's just a name.