Apple, Sony, 4 others sued by Graphics Properties

(Reuters) - 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 U.S. 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.