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The lawsuit, which was filed on 19 November, alleges that three Intel chipset families for the Celeron and Pentium III processors - the 810, 815 and 830 families - and Intel motherboards based on those chipsets infringe upon two patents held by Broadcom.
The 810 and 815 chipset families are designed to be used in desktop PCs running the Pentium III and Celeron processors, while the 830 is designed to be used with the mobile versions of these chips.
The three chipset families allegedly violate two graphics-related patents owned by Broadcom: US Patent No. 6,189,064 B1, entitled "Graphics Display System with Unified Memory Architecture"; and US Patent No. 5,963,210, entitled "Graphics Processor, System and Method for Generating Screen Pixels in Raster Order Utilising a Single Interpolator".
The lawsuit asks that the US District Court for the Eastern District of Texas grant an injunction to stop the shipment of Intel products that violate these patents and seeks unspecified monetary damages.
Intel officials could not immediately be reached for comment.
This is not the first time that Intel and Broadcom have locked horns over patent infringement. In July, an administrative law judge for the US International Trade Commission ruled that networking chips made by Broadcom infringed on two patents held by Intel.