Pamela Samuelson, Computer Programs, User Interfaces, and Section 102(b) of the Copyright Act of 1976: A Critique of Lotus v. Paperback, 6 High Tech. L.J. 311 (1991)
The article discusses the ruling issued by the U.S. court on the Lotus Development Corp. vs. Paperback Software International case, decided in June 1990. The ruling issued by Judge Keeton states that the copyright of Lotus for its popular 1-2-3 spreadsheet program protected the user interface of that program and that Paperback had infringed the Lotus copyright by copying a number of aspects of that interface.