MathWorks vs National Instruments Patent Case is Same O, Same O

6/26/2003 - The U.S. District Court for the Eastern District of Texas entered a judgment in the patent suit brought by National Instruments (NI) against The MathWorks. The court let stand a January 2003 jury verdict of infringement by The MathWorks Simulink® of some of the claims in three patents asserted by NI, and a jury verdict of non-infringement of a fourth patent asserted by NI.

The Court also stayed an injunction pending appeal of the decision. The Court stated that "the defendant [The MathWorks] has made out a substantial case on the merits and [this and other factors] counsel in favor of a stay."

Speaking for The MathWorks, Richard Rovner, Vice President of Marketing, outlined three key points:

"First, we are pleased that the Court recognized the merits of The MathWorks case and decided to preserve the status quo pending our appeal.

"Second, we believe that we have strong grounds for a successful appeal. The MathWorks does not believe it infringes the three patents and it also believes that the patents are invalid.

"Third, we want our customers to know that users of Simulink are not affected by this ruling and The MathWorks remains fully committed to the Simulink product family."

The appeal to the United States Court of Appeals for the Federal Circuit is expected to take approximately 18 months.

About The MathWorks
The MathWorks is the world's leading developer of technical computing software for engineers and scientists in industry, government, and education. With an extensive product set based on MATLAB and Simulink, The MathWorks provides software and services to solve challenging problems and accelerate innovation in automotive, aerospace, communications, financial services, biotechnology, electronics, instrumentation, process, and other industries.The MathWorks was founded in 1984 and employs more than 1,000 people worldwide, with headquarters in Natick, Massachusetts. For additional information, visit

MATLAB, Simulink, Stateflow, Handle Graphics, and Real-Time Workshop are registered trademarks, and TargetBox is a trademark of The MathWorks, Inc.

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