Other areas of high-tech are premised less on breakthrough innovations and more on the application of technology to massive new markets in retailing, advertising, media, financial services, education, publishing, communications, fashion and music.

WSJ: Why High-Tech Companies Are Moving to the City

The vast ocean of patents covering high-tech components, software and business processes means that each new product, generally comprising thousands of pieces of technology, usually infringes on several patents.

ECONOMIST: eBay’s bid to stop the injunctions | The