Chip Makers Duke It Out Over Patents
DA Nano sued Cabot Microelectronics Corp. on Dec. 8, seeking a declaratory judgment of non-infringement, invalidity and unenforceability.
DA Nano alleged that Cabot falsely claimed to own United States patents on several chemical mechanical planarization (CMP) slurries, used to make integrated-circuit devices for the semiconductor industry.
DA Nano submitted the complaint after Cabot, based in...
To view the full article, register now.