Atari v. Nintendo was a late-1980s dispute in which Atari Games Corp. tried to make cartridges for the Nintendo Entertainment System without a license, and Nintendo of America sued to stop it. The case turned on Nintendo’s 10NES lockout chip, Atari’s attempt to duplicate it through a program called Rabbit, and the way Atari obtained Nintendo’s source code from the U.S. Copyright Office by misrepresenting its purpose. Atari also filed antitrust claims challenging Nintendo’s licensing system. On the copyright question, the court found Nintendo was likely to succeed because Atari’s copy of the 10NES program had been acquired through deception.1Justia. Atari Games Corp. v. Nintendo of America Inc.
What Nintendo’s License Required
Nintendo controlled who could publish games for the NES through a written license. Third-party developers such as Atari were capped at five new titles per year. An exclusivity clause then locked each licensed game to the NES for two years after its first sale, barring the developer from adapting or licensing it for any other home console or computer during that window.1Justia. Atari Games Corp. v. Nintendo of America Inc.
How the 10NES Lockout Worked
Nintendo enforced the license through hardware. A chip inside the console exchanged signals with a matching chip in every authorized cartridge. Without the correct exchange, the console stayed in a continuous reset state and the game would not load. That handshake meant Nintendo, not the developer, decided which cartridges the machine would run.
The Rabbit Program and the Copyright Office Copy
Atari set out to build a chip that would produce the same signals the 10NES expected. The program it developed to do that was called Rabbit. To help with the work, an Atari attorney asked the U.S. Copyright Office for a copy of the deposited 10NES program, telling the office the copy was needed for pending litigation. That representation was false. Atari then used the copy to correct its own version of the code and to refine Rabbit so it generated matching signals.1Justia. Atari Games Corp. v. Nintendo of America Inc.
The Copyright Ruling
Nintendo held the exclusive rights that federal copyright law grants an author.2Office of the Law Revision Counsel. 17 U.S.C. § 106 Atari argued its copying was fair use in the course of reverse-engineering for compatibility. The court, ruling at the preliminary stage, found Nintendo likely to succeed on its copyright claim. The reason was the source of Atari’s copy: it had been obtained from the Copyright Office through a false statement, and Atari was not in authorized possession of it.1Justia. Atari Games Corp. v. Nintendo of America Inc.
The court indicated that reverse engineering for compatibility may be permissible in some circumstances, but those protections do not extend to a developer working from an illicit copy. Because Atari used the deposit copy to refine Rabbit, its conduct fell outside what fair use allows for competitive study.1Justia. Atari Games Corp. v. Nintendo of America Inc.
The Patent Claims
Nintendo also asserted patents covering the data exchange between the console and cartridge, the synchronized protocol the two chips used to confirm a cartridge was authentic. Nintendo argued Atari’s hardware was designed to imitate that communication method so the console would accept an unlicensed cartridge as genuine.1Justia. Atari Games Corp. v. Nintendo of America Inc.
Atari’s Antitrust Countersuit
Atari answered with antitrust allegations. It argued that the lockout chip combined with the licensing restrictions was an effort to monopolize the home video game market, making it difficult for other publishers to reach NES owners or offer alternative products. The court weighed those claims against Nintendo’s right to protect its intellectual property and control access to its platform.1Justia. Atari Games Corp. v. Nintendo of America Inc.