November 29, 2008 / 3:45 PM / 11 years ago

Infineon says Fairchild's suit counters own case

FRANKFURT, Nov 29 (Reuters) - Infineon (IFXGn.DE) said on Saturday that Fairchild Semiconductor’s FCS.N patent lawsuit against the German chip maker had been filed in response to a similar case brought by Infineon against its U.S. rival.

Fairchild, a maker of power management and analog microchips, filed a patent infringement lawsuit on Friday against Infineon in the U.S. District Courts of Maine and Delaware, saying that some of Infineon’s products “infringe one or more claims of eight Fairchild patents.” [ID:nLT41976]

A spokesman for Infineon was not immediately able on Saturday to provide further details on Infineon’s case against Fairchild. Calls seeking comment from Fairchild were not immediately returned.

The two companies are in a legal tussle over so called power chips that regulate electricity supply in computers, sold by Infineon under its CoolMOS and OptiMOS as well as Infineon IGBT and CanPak brands.

Infineon and Fairchild have engaged in cross-licence negotiations, but the talks recently soured, ultimately leading to the lawsuit, according to Fairchild. (Reporting by Alexander Huebner, writing by Ludwig Burger, editing by Anthony Barker)

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