Ninth Circuit: Apple did not engage in copyright misuse by restricting OS X to Apple hardware

Back in 2008, Apple sued Psystar for copyright infringement arising from Psystar’s manufacture and distribution of computers preloaded with copies of Mac OS X. Psystar lost at the trial court level, with the judge rejecting its argument that Apple engaged in anti-competitive, “copyright misuse” by requiring in its OS X software license agreement that the operating system be used only on Apple hardware. Psystar sought review of this ruling. On appeal, the Ninth Circuit affirmed.

Copyright misuse is a defense that one sued for infringement can raise. Courts will find that a plaintiff has engaged in copyright misuse if the enforcement of the plaintiff’s copyright will restrain the development of competing products. In this case, Psystar claimed that Apple’s enforcement of its software license restrained the development of competing hardware. The court rejected that argument because Apple’s enforcement of its software license agreement, requiring that the software be used only on Apple hardware, did not restrict Psystar from developing its own software.