a determination regarding whether Apple's operating system was one of a very limited number of ways to achieve its function. If it was, then Franklin would not be liable for copyright infringement. The parties settled. Apple was able to force Franklin to withdraw its clones by 1988. The company later brought non-infringing clones to market, but as these models were only partially compatible with the Apple II, and as the Apple II architecture was by this time outdated in any case, they enjoyed little success in the marketplace. IBM believed that some IBM PC clone makers such as Eagle Computer and Corona Data Systems similarly infringed on its copyright, and after Apple v. Franklin successfully forced them to stop using the BIOS. The Phoenix BIOS in 1984, however, and similar products such as AMI BIOS, permitted computer makers to legally build essentially 100% PC-compatible clones without having to reverse engineer the PC BIOS themselves. Another impact of the decision was the rise of the shrink-wrap proprietary software commercial business model, where before a source code driven software distribution schema dominated. See also Notable litigation of Apple Computer References External links Text of the decision Another text of the decision Apple II family United States copyright case law Apple Inc. litigation United States Court of Appeals for the Third Circuit cases 1983 in United States case law BIOS