Psystar representatives said they filed a countersuit against Apple on Thursday, arguing that a market could exist for third-party Mac clones, if not for the legal and technical barriers that Apple has set up.
Psystar charged Apple with restraint of trade, unfair competition and other violations of antitrust law in a 54-page complaint filed in the Northern California Division of the United States District Court and emailed to reporters.
http://www.pcmag.com/article2/0,2704,2329209,00.asp