A Federal Court Judge in San Jose, California has ruled that Hewlett-Packard Co falsely labels packages for its ink jet cartridges. The injunction motion was brought by Dallas, Texas Nu-Kote International Inc, who refills the cartridges. The ruling will prevent Hewlett-Packard using the packaging, which suggests a new cartridge is needed when the ink has run out; Nu-Kote says refilling the empty cartridges costs half the price of a new one and chairman David Brigante said the companies can now compete on a more level playing field.