(United States Federal Circuit) - In an infringement suit filed with the ITC involving a patents directed to a wireless digital audio system designed to let people use wireless headphones privately,without interference, even when multiple people are using wireless headphones in the same space, and the ITC's decision that the term 'virtually free from interference' was indefinite and invalidated the asserted claims of plaintiff's patents is reversed where the term 'virtually free from interference,' as properly interpreted in light of the specification and prosecution history, would inform a person of ordinary skill in the art approximately the scope of the invention with fair certainty.
Source: findlaw.com