Worthless patents

日期:2019-02-27 07:19:06 作者:汤葛 阅读:

By Barry Fox The US Supreme Court has ruled that four early patents on CD technology are now worthless. Thomson of France had been earning $40 million each year from the patents, which it began filing in 1972. But in 1996, a jury in Delaware accepted arguments from a company called Quixote that Universal Pictures had pre-empted Thomson with a CD-like video disc in 1972. Thomson appealed against that ruling, but the Supreme Court has now decided that although the Universal disc had only crudely formed pits in its surface, like those that store music data in a CD,