New York: Apple Inc, Sony Corp and four other companies were sued by Graphics Properties Holdings Inc, formerly known as Silicon Graphics Inc, for allegedly infringing a patent through their sale of mobile phones and other electronic devices.
The lawsuits against Apple, Japan-based Sony, Taiwan-based HTC Corp, South Korea-based LG Electronics Inc and Samsung Electronics Co were filed in the US District Court in Wilmington, Delaware.
The patent at issue relates to a computer graphics process that turns text and images into pixels to be displayed on screens.
According to the lawsuits, the defendants' infringing devices include Apple's iPhone and the HTC EVO4G, LG Thrill, Research in Motion Torch, Samsung Galaxy S and Galaxy S II, and Sony Xperia Play smartphones.
Graphics Properties said that unless the alleged infringements are halted, it will suffer irreparable harm. The lawsuits seek to stop the sale of infringing products and also seek reasonable royalties and other damages.
HTC spokeswoman Lori Rodney, LG spokesman John Taylor, Research in Motion spokeswoman Tenille Kennedy and Sony spokeswoman Sandra Genelius declined to comment on the substance of their companies' respective lawsuits. Apple and Samsung did not immediately respond to requests for comment.
Silicon Graphics filed for bankruptcy in 2009 and sold much of its operations to Rackable Systems Inc. The remaining operations are based in New Rochelle, New York, and are owned by private investment firms and other investors, according to the complaints.
The lawsuits are all in the US District Court, District of Delaware.