Samsung says: Pinch this, Apple

Samsung said the company's "LaunchTile and AppLens and LaunchTile Publication" describes a display touch type information input system for inputting operating information by detecting contact on a touch screen.

The company said a "multi-finger depinch gesture" on the touch screen display was capable of "enlarging a portion of the display in accordance with the de-pinch gesture."

This graphic showing the pinching action was included in Samsung's document.