At first, the US Patents and Trademarks Office let the application through. Then it changed its mind at the last moment and decided to re-examine the application.
Dell’s attempt to register ‘Cloud Computing’ is naughty because it is commonly used to describe the concept of using Internet based services by consumers with no knowledge of or control over the technology.
Commonly used, generic concept terms should not be registrable as trade marks because everyone should have the right to use them. This is, in fact, why terms lose trade mark protection once they become generic. Very much like the Ugg boots case.