There used to be a FTP client for linux called kevlarftp (it was a OSS clone of the bulletproof ftp client). Dupont lawyers raised copyright issues against the

There used to be a FTP client for linux called kevlarftp (it was a OSS clone of the bulletproof ftp client). Dupont lawyers raised copyright issues against the product name. The author promptly gave up and the software was renamed to "kftp"