The Google subsidiary filed a complaint with the ITC in 2010 alleging that Apple had violated 18 Motorola patents ... It covers the concept of using a proximity sensor to automatically disable ...

the sensor to disable communication of the input signal to the processing section when the portable communication device is positioned in close proximity to a user, thereby, preventing inadvertent ...

The US International Trade Commission has sided with Apple (PDF) in a patent lawsuit brought by Google and Motorola Mobility that challenged a proximity sensor feature on the iPhone 4, Bloomberg ...