Original sentence: In computing, ZFS is a combined file system and logical volume manager designed and trademarked by Sun Microsystems.ZFS is implemented as  open-source software, licensed under the Common Development and Distribution License (CDDL)
Edited sentence: In computing, ZFS is a combined file system and logical volume manager designed by Sun Microsystems.The ZFS name is a trade mark of Sun.ZFS is implemented as open-source software, licensed under the Common Development and Distribution License (CDDL)