Nu-kote Holding Inc. has filed a motion with a Federal District Court in California to stop Hewlett-Packard Co. from making "unnecessary" changes to its ink-jet cartridges.
Nu-kote, a Dallas-based manufacturer of after-market products such as toner, ink-jet cartridges and typewriter ribbons, has been in litigation with HP over what it claims are "monopolistic" practices. HP sued Nu-kote last year for patent infringement.
The latest charge alleges that HP has made changes to its ink-jet cartridges in order to make it more difficult for after-market suppliers to compete.
HP officials could not be reached for comment.
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