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In 2003, the Wisconsin Alumni Research Foundation (WARF), an organization that handles patent licensing for the University of Wisconsin, sued Sony and Toshiba over technology it said was used to make the PlayStation 2’s Emotion Engine processor. The reports describe a patent-infringement allegation and a demand for damages and an end to the disputed use; they do not establish that a court found infringement or how the case ended.
What was the lawsuit about?
Contemporary reports said WARF brought the action on behalf of the University of Wisconsin, alleging that Sony and Toshiba used patented chip-production technology in the PS2’s main processor. The complaint was reported in October 2003, with the case filed in Madison, Wisconsin. Neowin’s October 25, 2003 report described the dispute as involving the PS2’s Emotion Engine; Law360’s October 27, 2003 report likewise tied the allegation to the console’s main chip.
The university-related organization involved was WARF, which manages patent licensing and enforcement for the University of Wisconsin. Pinsent Masons reported on October 29, 2003 that WARF brought the suit after Sony and Toshiba allegedly declined to obtain a license. That account characterized the patent as concerning how a chip is made and quoted an unnamed WARF spokesperson: “We hope the lawsuit will encourage them to bargain in good faith”.
What technology did WARF say Sony used?
The reports describe the allegation at a broad level: a method or technology involved in producing a chip, said to be used in the PS2 processor. They do not provide enough detail to identify a particular circuit, manufacturing step, or complete patent claim, so it would be misleading to present a more specific technical description as established fact.
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- PlayStation2 is equipped with a 128-bit Emotion Engine processor that enables lightning-fast gameplay and impressive graphics power
Neowin noted uncertainty in early coverage about whether the asserted technology related to the full Emotion Engine package or a particular component, distinguishing the package from its “EE Core.” The reports connect the allegation to the processor but do not independently demonstrate that Sony or Toshiba infringed the patent.
What did the plaintiff seek?
Neowin reported that the plaintiff sought damages and an order stopping use of the disputed technology. Pinsent Masons described WARF as seeking a license and said it hoped the litigation would prompt negotiations. These are reported positions and requested remedies, not evidence that a court granted them.
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What is known about the patent and timeline?
- 1986: Neowin reported that the asserted university patent had been filed in 1986. The contemporaneous coverage cited here does not independently verify the patent record or set out its claims.
- October 25, 2003: Neowin reported that the University of Wisconsin–Madison had sued Sony and Toshiba over alleged use of the patent in the Emotion Engine.
- October 27, 2003: Law360 reported that a group representing the university filed the action in Madison over the PS2 main chip.
- October 29, 2003: Pinsent Masons reported WARF’s licensing position and its account that Sony and Toshiba had refused a license.
Did the University of Wisconsin win?
The available contemporaneous reports establish the filing and summarize the allegation, but they do not establish the case’s final disposition. They do not show whether the university won or lost, whether the parties settled, or whether a license was ultimately granted. No damages amount or licensing terms are established by these reports.
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