A firm named Man and Machine is suing both Apple and CBS for trademark infringement for using the Mighty Mouse name to describe a computer input device. Man and Machine makes hygenic water- and chemical-resistant keyboards and mice for hospitals and laboratories.
Man and Machine claims CBS (who owns the cartoon property, which may or may not be pictured) did not have the legal authority to license the name to Apple. Man and Machine holds a trademark for use of the Mighty Mouse name in conjunction with an interface controller. It claims it first used the term in 2004, but only filed for the trademark in December 2007. CBS's trademark (which covers Apple's device) was filed in July 2007, indicating its first use was in 2005 (when the Mighty Mouse came out).
Thus the tension. It's unclear if Man and Machine licensed the Mighty Mouse name (as Apple did) and whether or not that will influence the outcome.
[via 9-to-5 Mac]