2026 · Wikipedia
Apple Computer, Inc. v. Microsoft Corp.
Apple's 1988 copyright suit against Microsoft and Hewlett-Packard sought to block GUI elements resembling the Lisa and Macintosh systems, and its collapse cleared Windows' path. Apple argued that the look and feel of the Macintosh interface, taken as a whole, was protected, and it listed 189 interface elements it claimed were infringed; the court found that 179 of those had already been licensed to Microsoft in the Windows 1.0 agreement, and that most of the rest were either unoriginal to Apple or the only possible expression of an underlying idea. The district court set a standard of virtual identity for infringement, which the Ninth Circuit almost entirely affirmed in 1994, holding that the similarities sprang from the license or from basic ideas and their obvious expression, and the Supreme Court declined to hear Apple's appeal. Apple's only win covered the trash can and folder icons in Hewlett-Packard's NewWave; a parallel Xerox suit against Apple was dismissed.