http://www.metawatch.ca/blog/Selecting_a_Cost_Effective_Inkjet_Printer.htm Epson Corp. has been hit with antitrust counterclaims Seiko
Epson Corp. has been hit with antitrust counterclaims in its patent
infringement litigation against China’s Ninestar Technology Co. Ltd.
and other printer supply manufacturers over ink cartridges.In
counterclaims filed Friday in the U.S District Court for the District
of Oregon, Ninestar and its affiliates allege that Seiko Epson has
patented features in its ink cartridges that are not novel or distinct
from prior cartridges in order to prevent others from offering
competing ink cartridges for use in Epson printers.